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GeoFrameBasic Seismic Interpretation

Using IESX

Training and Exercise Guide

GeoFrame 4

November 19, 2001

Copyright Notice

© 2001 Schlumberger. All rights reserved.

No part of this manual may be reproduced, stored in a retrieval system, or translatedin any form or by any means, electronic or mechanical, including photocopying andrecording, without the prior written permission of GeoQuest, 5599 San Felipe, Suite1700, Houston, TX 77056-2722.

Disclaimer

Use of this product is governed by the License Agreement. Schlumberger makes nowarranties, express, implied, or statutory, with respect to the product describedherein and disclaims without limitation any warranties of merchantability or fitnessfor a particular purpose. Schlumberger reserves the right to revise the informationin this manual at any time without notice.

Trademark Information

GeoFrame™, StratLog™ WellPix™, WellEdit™, WellSketch™, and CPS-3™are trademarks of Schlumberger.

All other products and product names are trademarks or registered trademarks oftheir respective companies or organizations.

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• • • • • •Contents

About This Course . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

How to Use the Training Guide . . . . . . . . . . . . . . . . .

Common Commands . . . . . . . . . . . . . . . . . . . . . .

Typographic Conventions . . . . . . . . . . . . . . . . . v

Exercises and Procedures . . . . . . . . . . . . . . . . . .

Standard Buttons . . . . . . . . . . . . . . . . . . . . . . . . .

Course Agenda . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1 Start GeoFrame and IESX . . . . . . . . . . . . . . . 1-1

Exercise: Start GeoFrame and IESX . . . . . . . . . . . 1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2 Build an Interpretation Framework . . . . . . . 2-1

Exercise: Build an Interpretation Framework -Basemap . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Exercise: Build an Interpretation Framework -Seismic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 3 Wells and Boreholes . . . . . . . . . . . . . . . . . . . 3-1

Exercise: Wells and Boreholes . . . . . . . . . . . . . . . . . . 3

Chapter 4 Browse Project Data . . . . . . . . . . . . . . . . . . . 4-1

Exercise: Browse the Basemap Window . . . . . . . . 4

Exercise: Browse the Seismic Window . . . . . . . . . 4-

Chapter 5 Interpretation Techniques . . . . . . . . . . . . . . . 5-1

Exercise: Interpretation Techniques . . . . . . . . . . . 5

Exercise: Interpret Horizons and Faults . . . . . . . . . 5

Exercise: Assign Faults to Interpretation . . . . . . . 5-1

Chapter 6 Areal Operations . . . . . . . . . . . . . . . . . . . . . . 6-1

Exercise: Areal Operations . . . . . . . . . . . . . . . . . . . . 6

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Chapter 7 Automated Picking Techniques . . . . . . . . . . 7-1

Exercise: Automated Picking Techniques . . . . . . . 7

Exercise: AutoPix . . . . . . . . . . . . . . . . . . . . . . . . . 7-

Exercise: SurfaceSlice . . . . . . . . . . . . . . . . . . . . . 7-

Chapter 8 Basemap Plus . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Exercise: Basemap Plus Gridding . . . . . . . . . . . . . 8

Exercise: Editing in Basemap Plus . . . . . . . . . . . . 8

Chapter 9 GeoViz Explore . . . . . . . . . . . . . . . . . . . . . . . 9-1

Exercise: GeoViz Explore . . . . . . . . . . . . . . . . . . . 9-

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• • • • • •About This Course

Overview

This course teaches Basic GeoFrame Seismic Interpretation using IESX,which is a group of GeoQuest software applications designed to interpretseismic data.

The course is designed for users who will be interpreting 2D and 3D seismdata using GeoFrame IESX software. Students will interactively interpret adataset throughout the week. Applications covered include Seis3DV*,Seis2DV*, Basemap Plus*, ASAP, SurfaceSlice®, and GeoViz Explore*.

Students should have proficiency in basic computer skills and rudimentarygeological and geophysical knowledge. A course inGeoFrame Fundamentalsis advised for persons deficient in these areas. The courseGeoFrame IESXSeismic Data Loading & Data Management is also recommended.

The course guide is divided into chapters organized to follow an interpretaworkflow format. Chapters are divided into topics integrated with exercisesthat demonstrate how to use the functions described in the topic. Workfloware presented as guides to efficient interpretation. As the interpreter becoskilled in the software functionality, other workflows may be found that arebetter suited to a particular data set.

GeoFrame 4 Basic Seismic Interpretation Using IESX v

About This Course Schlumberger

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How to Use the Training Guide

Certain conventions in this guide make it easier to use. The following sectdescribe the conventions used throughout the training guide.

Common Commands

The following table describes the most common commands you willencounter throughout the exercise and training guides.

Command Generally Refers to Action Required Example

Click Buttons or objects in awindow or dialog box

Position the cursor overthe button or object andclick the left mousebutton once.

Click Start .

Right click Right Mouse Button(MB3)

Position the mousecursor over a button orother area of a window,and click the right mousebutton.

Right click theField icon to openthe Insert Structuredialog box.

Double-click Items in a window ordialog box

Position the cursor overthe item and click the leftmouse button twicerapidly.

Double-click thelocation name toopen the LocationEditor.

Drag Cursor 1. Position the mousecursor over aspecified area of awindow.

2. Press and hold theleft mouse button.

3. Drag the cursor toanother area of thewindow.

Drag the cursorfrom 7000 to 7500feet.

Enter Text fields 1. Position the cursorover the text field.

2. Click the left mousebutton once toactivate the field.

3. Type the desiredtext.

Enter the itemnumber.

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Open Windows and dialogboxes

Select the appropriatemenu option or click theappropriate button orobject to display thedesignated window.

Open the Printwindow.

Press Keys on the physicalkeyboard

Press the designatedkey.

Press F9.

Select Menus and menuitems in a window

1. Position the cursorover the menu.

2. Click the left mousebutton once. A droplist appears.

3. Move the cursor tothe desired menuitem.

4. Click the left mousebutton once.

Select File > New .

Select Drop lists 1. Position the cursorover the arrow to theleft of the drop listfield.

2. Click the left mousebutton once on thearrow to display thedrop list items.

3. Move the cursorover the item to beselected. Click theleft mouse buttononce to select theitem.

Select a locationfrom the drop list.

Type Entries Text fields(An entry to be typedappears in boldcourier font).

1. Position the cursorover the text field.

2. Click the left mousebutton once toactivate the field.

3. Type the desiredtext.

1. Type the pathand file namein theDatabasefield.

2. Enter MARGforFormation top .

3. Type SECTION1 in the Namefield.

Command Generally Refers to Action Required Example

GeoFrame 4 Basic Seismic Interpretation Using IESX vii


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Typographic Conventions

The following table lists the special formatting you will encounter throughothe training and exercise guides.

Item Shown As Description Example

ImportantInformation

Italic text Highlightsimportantinformation withinthe text

Always enter the datein the format MM-DD-YY.

Typed Entries Bold text, courier font Indicates thespecificinformation youmust type into afield or commandline

Type 112298 in theDate field.

Buttons, menuand menuitem names,keyboard keys

Bold text Highlights itemson the window orbuttons on thekeyboard withwhich you mustinteract

1. Click Ok.

2. Select File > New .

3. Press Tab.

Mousecommandand/or keycombinations

Keyboard key name(s)and/or mousecommand separatedby a hyphen

Indicates thecombination ofkeyboard keys ormouse action andkeyboard key youmust perform

1. Press <Alt><F4> .

2. Control-clickWELL-O andWELL-K .

Menus andMenu Items

Menu names andmenu item name(s)separated by an arrow(>)

Indicates thesequence of menunames and menuitem(s) the usermust select

Select XSection >Create in theProspect window.

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File names,SystemMessages andScreen Text

Bold text, Courier font Highlights systemmessages or textthat appears in awindow

1. If you receive theerror Databasenot found ,contact the systemadministrator.

2. Exported files arestored in a userspecified directorywith a userspecified nameand a.pbfextension(PowerPlanBackup File).

SystemMessages/Screen Text

Bold text, Courier font Highlights systemmessages or textthat appears on awindow

If you receive the errorDatabase notfound , contact thesystem administrator.

Caution Text displayed in ahighlighted boxpreceded by the wordCaution .

A statement toproceed cautiouslyand avoidconditions that, ifunheeded, mayadversely affect aprocedure functionor data. Lesssevere thanWarning

Caution: Take care inapplying spatiallyvarying static mistiesbecause they can causefalse structures toappear in the seismicsection.

Warning Text displayed in ahighlighted boxpreceded by the wordWarning .

A statement ofinformation toavoid conditionsthat, if unheeded,will adverselyaffect a procedure,function, or data.More severe thanCaution

Warning: You mustenter an end date that islater than the start dateto correctly calculate theduration.

Note Italic font, preceded bythe Illustrated graphicsymbol and the wordNote

Providessupplementalinformation Note: ClickingList

Summary displays onlythe item names.


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GeoFrame 4 Basic Seismic Interpretation Using IESX ix


Tip Italic font, preceded bythe Illustrated graphicsymbol and the wordTip

Provides helpfulsuggestions. Oftenused in Exercises. Tip: If the user can’t tell

the difference betweenshading on or off, zoomin to see the seismicmore clearly.

Best Practice Italic font, preceded bythe Illustrated graphicsymbol and the wordsBest Practice

Provides guide toefficient work flow.

Best Practice: Thebasemap will look lesscluttered if only one zoneper layer is posted.

Buttons,Dialog boxand Windowtitles, FieldNames, andmenu options.

Noted in bold type. Highlights specificwindow and fieldnames

Click OK.Open the Createdialog box.Select the Edit option.


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Exercises and Procedures

The exercise guide contains exercises that list specific steps for you to perand specific data to enter.

Procedures

Procedures appear at the end of the book in the format shown below. Notthat procedures contain general steps and do not contain data to select o

Exercises

Exercises are introduced by a description of the steps to follow. The stepsappear in a numbered list of specific actions to take and data for you to seor enter.

Create a cross section:

1. SelectXSection > Create in the Prospect window.

2. TypeSECTION 1 in theName field.

3. Click OK to confirm the entry and close theXSection Create dialog box.

Standard Buttons

Use command bar buttons to inform the system that an action or commancomplete. All dialog boxes contain one or more of the following buttons:

• OK — applies the current settings and closes dialog box

• Apply — applies the current settings

• Reset— clears any changes or entries in the dialog box without saviany information

Procedure: Create a Cross Section

1. Create a new cross-section in the Prospect window.

2. Assign a descriptive name.

3. Save the data.

GeoFrame 4 Basic Seismic Interpretation Using IESX xi


• Default — restores the settings/information in the dialog box to thesystem default

• Cancel — cancels any unsaved changes and closes dialog box

• Close — closes dialog box

• Help — displays help on the currently-active dialog box

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Course Agenda

The following is a general outline for the course. We have included time fobrief morning and afternoon breaks

Day 1

Morning IntroductionChapter One - Start GeoFrame IESXChapter Two - Build an Interpretation Framework

Afternoon Chapter Three - Wells and BoreholesChapter Four - Browse Project Data

Day 2

Morning Chapter Four - (continued)Chapter Five - Interpretation Techniques

Afternoon Chapter Five - (continued)Chapter Six - Areal Operations

Day 3

Morning Chapter Seven - Automated Picking TechniquesChapter Eight - Basemap Plus

Afternoon Chapter Eight - Basemap Plus (continued)Chapter Nine - GeoViz Explore

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Chapter 1

• • • • • •Start GeoFrame and IESX

Overview

GeoFrame is a family of software products designed to facilitateinterpretation of seismic, well log and reservoir modeling data.GeoFrameproducts are designed to be used in an integrated manner in the geophysand geological evaluation of areas for potential oil and gas prospects.

This course does not teach how to interpret seismic data. This course isdesigned to teach how to useGeoFrame IESXfunctions during seismicinterpretation, and to explain the functions in an integrated, workflow-orienmanner.

Chapter 1 introducesGeoFrame IESX and its associated login windows andmanagers. AlthoughGeoFrame Fundamentalsis a prerequisite to thiscourse, someGeoFrame Fundamentalsfunctionality will be reviewed asnecessary.

Learning Objectives

1 Be able to use Geonet to start GeoFrame.

2 Understand what the cadet blue window is used for.

3 Know how to select and login to a project.

4 How to create, backup and restore a project. In addition we will review units andprojections, storage setting, and access rights.

5 Understand how to start the Application Manager, select the appropriate software,select the correct Data Managers, and start up the Seismic Catalog.

6 Learn to start IESX and the use of saved sessions

GeoFrame 4.0 Basic Seismic Interpretation Using IESX Chapter 1 - 1

Start GeoFrame and IESX Schlumberger

Chapter 1 - 2 GeoFrame 4.0 Basic Seismic Interpretation Using IESX

Schlumberger Start GeoFrame and IESX

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ExerciseExercise

Start GeoFrame and IESX

Overview

This exercise teaches you how to enter and exitGeoFrame IESXsoftware, howto access various tasks (such asSeis%DV, Basemap, and so on) withinIESX,how to access otherGeoFrame applications, and how to save sessions.

Exercise

Start GeoFrame 4.0 from Geonet

1. From theGeonet menu, chooseGeoFrame 4.0.1 > GeoFrame to open theProject Manager dialog box. TheProject Manager dialog box opens with theLogin folder open by default

2. In theProjects for <username > area of theLogin folder of theProjectManager dialog box, click to highlight with black the desired project in the listof available projects (the instructor will indicate which project is to be selecte

• • • • • •

NOTE: In the classroom, the password is the same as the project name.

3. After the project name is highlighted in black, and since the password is the sas the project name, point the cursor in the password box and clickMB2 to copythe project name into thePassword text field. Alternatively, you may type in thepassword.

GeoFrame 4 - Basic Seismic Interpretation Using IESX Ch 1 Exercises - 3


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4. Click Connect.

• • • • • •

NOTE: When you are connected to the project,Connectis dimmed andApplicationManager is active.

Launch the Application Manager

1. In theProject Manager dialog box, click theApplication Manager button toopen theApplication Manager dialog box.

2. Close theProject Manager dialog box and clickOK to confirm.

3. In theProductsarea of theApplication Manager, click theSeismic icon toopen theSeismic Catalog.

4. In theSeismic Catalog, click the textIESX to highlight it (do not click the icon).

5. Click OK to open theIESX Session Manager window.

6. Click on theTime Model button and choose theDefault time model. Do thesame for theDepth model.

• • • • • •

NOTE: You can create your own Time or Depth model using the InterpretationModel Manager under Applications > Interpretation Model Manager.Usthe online help To change models you must close all applications undeIESX, change the model, then reopen the applications.

7. In theIESX Session Manager window, chooseApplication > Interpretation >(then hold down the <Control > key on the keyboard and click)Basemap toopen theApplication task parameters dialog box.

8. In theApplication task parameters dialog box, selectScreen 1 for Display todisplay theBasemap main window on the secondary screen.

9. Click OK to open theBasemap main window on the secondary screen.

10. If a choice is offered, select the defaultGeophysical Default Map and clickOK(initially, you have two choices: Default Geophysical and Default Geological)

Ch 1 Exercises - 4 GeoFrame 4 - Basic Seismic Interpretation Using IESX


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11. In theIESX Session Manager window, chooseApplication > Interpretation >Seis3DV/2DVto open theSeis3DV/2DV main window on the Primary screen(Screen 0).

12. In theIESX Session Manager window, type inSession_1 in theSession textfield. ChooseFile > Exit to exit theSession Managerand chooseYesto save thecurrent session (choosingFile > Quit exits without saving the session). Noticethat Seis3DV andBasemapare automatically closed.

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TIP: Use the <Front > key on the left side of the (Sun) keyboard to bring hidden screens tofront of the monitor display.

Open a New Session

1. In theApplication Manager dialog box, click theSeismic icon to reopen theSeismic Catalog and create a second session.

2. In theSeismic Catalog, click theIESX folder icon to display a list of availablesessions.

3. Click to highlight and select New Run.

4. Click Apply.

5. In theIESX Session Manager window, hold down the <Control > key andchooseApplication > Interpretation > Basemap to openBasemap on thesecondary screen (Screen 0.1).

Launch Other GeoFrame Applications

1. In the lower left corner of theBasemap main window, click theApplicationManager icon to open theApplication Manager dialog box.

2. In theApplication Manager dialog box, click theGeology icon to open theGeology Catalog.

3. In theGeology Catalog, click to highlight and selectWellPix.

4. In theDisplay text field, change0.0 to 0.1.

5. Click OK to startWellPix on the secondary screen (Screen 1).



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6. In theApplication Manager dialog box, click theVisualization icon to open theVisualization Catalog.

7. In theVisualization Catalog, click to highlight and selectGeoViz (IESX).

8. Click OK to startGeoViz and open theAuxiliary Display dialog box.

9. In theAuxiliary Display dialog box, clickLaunch GeoViz to open theGeoVizmain window.

10. In theIESX Session Managerwindow, type inSession_2 in the Session textfield, then chooseFile > Exit to exit and click onYes to save the session.

11. In theWellPix main window, chooseFile > Exit to close the application. Whenthe messageDo you really want to exit the application? displays, clickOK .

12. In theGeoViz main window, chooseFile > Exit; to close the application. Whenthe messageDo you want to exit GeoViz? displays, clickOK .

Open Process Manager

1. In theManagersarea of theApplication Manager dialog box, click theProcessicon to open theProcess Managermain window.

2. In theSeismic Catalog, observe the list of saved sessions.

3. HighlightSession 1 of the saved sessions inSeismic Catalog and note theRemarks text field. The name of the highlighted saved session appears in theRemarks text field of theSeismic Catalog and, simultaneously, the graphicrepresentation of the saved session is highlighted in black in the ProcessManager main window.

4. In theProcess Manager, chooseEdit > Delete and deleteSession 1. Check theRemarks text field in the Seismic Catalog and ensure that you are deleting thcorrect session.

5. In theProcess Managermain window, double-click theGeoVizgraphic, or clicktheGeoVizgraphic, hold downMB3 and selectRun to start the previously savedGeoViz session.When theModel Selector dialog is displayed, make sure theDefault time and depth model are selected and clickOK .

6. In theAuxiliary Display dialog box, clickLaunch GeoViz to open theGeoVizmain window.



Create Session 3

1. From theProcess Managermain window, or from theSeismic Catalog, open aSeis2DV/3DV window onScreen 1 and aBasemap window onScreen 2.

2. CloseGeoViz.

3. Save asSession 3.

4. Close theProcess Manager.




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Chapter 2Build an Interpretation Framework

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OverviewOverview

This chapter covers the setup of the interpretation workspace usingBasemap andSeis%D/V. Optimizing the visual workspace will facilitate efficient interpreting othe seismic data.

After initial assessment of the data, but before interpretation can begin inGeoFrame IESX, the appropriateBasemapandSeis%D/Vwindow displayparameter values must be set so that the workstation workspace is prepared interpretation session.

• Basemap window - displays a plan view of the available seismic surveyboreholes, and any cartographic data in the project.

• Seis%D/V window - displays a vertical cross sectional view of selectedcrosslines and inlines, or a horizontal cross sectional view of selected slfrom the available seismic data in the project.


Build an Interpretation Framework Schlumberger

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Learning Objectives

After completing this Basemap portion of the chapter, you will be able to do thfollowing:

• define the appearance of a base map

• set time or depth domain

• post seismic surveys

• post culture (cartographic) data

• manage maps inBasemap: create, save, delete

In the Seis%D/V exercises you will learn to:

• prepare the seismic window display for Interpretation

• use time or depth domain data

• annotate the seismic window

• define the seismic display specifications

• post boreholes in the seismic window

• set seismic window preferences

• use seismic icons

In the Data Manager section there are no exercises. The instructor will reviewto:

• share and synchronize seismic surveys

• import and export interpretation

• copy seismic

• create seismic reports

• delete shared seismic volumes

• change the 3D survey origin


Schlumberger Build an Interpretation Framework - Basemap

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ExerciseExercise

Build an Interpretation Framework - Basemap

The following exercises teach how to select aTime/Depth Domain, set up the appear-ance of the basemap, post and modify seismic surveys, add culture data, createand open a basemap.

Select Domain

1. In theBasemap main window, chooseUser > Seismic Domain to open theSeismic Domain dialog box

2. In theSeismic Domain dialog box, toggleDepth on (red).

3. Click OK . Observe that the T icon at the top of the icon bar in theBasemapmain window has changed to aD.

4. Click theD icon to change theSeismic Domain back toTime Domain.

Define Basemap Appearance

1. In theBasemap main window, chooseUser > Map Annotations, or click theMA icon to open theMap Annotations dialog box.

2. In theMap Annotations dialog box, click to open theMap Scale folder andchangeLabel Style to Ratio.

3. In thePlacement area, toggleon (red) the lower left position to reposition themap scale to the lower left corner of the basemap.

4. Click Apply and observe changes to the basemap.

• • • • • •

NOTE: (Observe that you can post two items in the same corner or side. In this cthe north arrow and the scale are now both in the lower left corner.)


Build an Interpretation Framework - Basemap Schlumberger

5. Click to open theCanvas folder and clickBackground Color to open theAvailable Colors dialog box.

6. In theAvailable Colors dialog box, click to highlight and select 8, then clickClose.

7. In theMap Annotations dialog box, clickApply and observe the changes to thebackground color of the basemap.

8. Click to open theXY tick Annotation folder and clickText Color to open theAvailable Colors dialog box.

9. In theAvailable Colors dialog box, click to highlight and select 4 (red), thenclick Close.

10. In theXY Tick Annotation folder, change theNumber of Minor TickIncrements to 10.

11. ClickApply.

12. Click to open theLat/Long Tick Annotation folder and clickText Color toopen theAvailable Colors dialog box.

13. In theAvailable Colors dialog box, click to highlight and select30 (blue).

14. ToggleMinor Ticks off (dimmed).

15. Click and selectCross Marks for Major Tick Style .

16. ClickApply and observe changes to the basemap.

17. Click to open theNeatline folder.

18. In theNeatline folder, clickForeground Color to open theAvailable Colorsdialog box and select5 (red), then clickClose.

19. ClickBackground Color and select18 (green) from theAvailable Colors dialogbox, then clickClose.

20. Select awiderLine Width and adashedLine Style from the choicesbelow thesolidstyle in theLine Style menu.

21. ClickApply.



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22. Select adashedLine Style from the choicesabove thesolid style in theLineStyle menu.

23. ClickApply and observe the difference in the two types of line styles.

24. In theMap Annotations dialog box, clickOK to close the dialog box and set thechanges for the basemap.

25. In theBasemap main window, chooseUser > Move Items.

26. Click withMB1 on the north arrow to highlight it with a yellow outline.

27. Drag the yellow outline to a new position on the basemap.

28. ClickMB1 to fix the new location of the north arrow.

29. Use the same procedure to move the map scale to the lower right hand cornthe basemap.

Basemap Preferences

1. In theBasemap main window, chooseUser > Preferences to open thePreferencesdialog box.

2. In thePreferences dialog box, change theZoom Style to Aspect Rectangle

3. Click on theZoom icon and draw an area to zoom into.

4. Click OK . These settings will be used to create a map later.

Post 3D Seismic Survey on the basemap

1. In theBasemap main window, choosePost > Surveys to open theSurveysdialog box.

2. In theContent folder of theSurveys dialog box, click to highlight and select thecloudspin_surveyfrom the Available list.

3. Click to open the3D Appearancefolder.

4. In the3D Appearancefolder, click to open theInlines/Crosslines folder.

5. In theInlines/Crosslines folder, togglePost Inlineson (red).



6. Click theColor icon to open theAvailable Colors dialog box and select28 tochange the color of inlines to blue.

7. In the3D Appearance folder, click to open theSymbols folder.

8. In theSymbols folder, click theSymbol icon to open theSymbol Selectiondialog box and select theX symbol.

9. Click theColor icon and select28 to change the symbol color to blue.

10. ClickApply.

11. In the 3D Appearance folder, click to open theInlines/Crosslinesfolder.

12. In theInlines/Crosslinesfolder, togglePost InlinesandPost Crosslineson (red)and change theLine End to 600 and theCDP End to 500.

13. ClickApply and observe the rectangular grid of inlines and crosslines thatappears on the basemap.

Post 2D Seismic Survey on the basemap

1. In theSurveys dialog box, click to open theContent folder and select only the2d_slb survey.

2. Click Apply.

3. Click to open the2D Appearancefolder.

4. In theAnnotation Options area of the2D Appearancefolder, togglePostShotpointson (red).

5. In the2D Appearancefolder, click to open theSymbols folder and togglePostSymbolson (red).

6. Click theSymbol icon to open theSymbol Selection dialog box and select adiamond for the shotpoint symbol.

7. In the2D Appearancefolder, click to open theLabels folder and togglePostLabelson (red).

8. Enter25 for SP Increment.

9. In theLabel Style area of the2D Appearancefolder, selectModulus for Mode.



10. ClickApply and observe shotpoint labeling.

11. In theSurveys dialog box, clickOK .

Post Culture (Cartographic) data on basemap

1. In theBasemap main window, choosePost > Culture to open thePost Culturedialog box.

2. In thePost Culture dialog box, click to highlight and selecttownship from theAvailable list.

3. Click to open theAppearancefolder and change the appearance of thetownshipculture data.

4. Change theForeground Color to blue (28) andBackground Color to green(18).

5. Select a heavyLine Width and select a dashedLine Style from the choicesbelowthesolidstyle in theLine Style menu.

6. Click Apply then Cancel.

7. ChooseFile > Save Asto open the Save As dialog box andsave the current 2Dbasemap.

8. In theSave As dialog box, type2D Seismic Map in theName text field andtypewith township culture in theDescription text field.

9. Click OK .

10. SelectFile > Open Mapand click to highlight and selectDefault geophysicalmap.

11. ClickOK to display theDefault geophysical map in theBasemap mainwindow.

Create New Basemap

1. In theBasemap main window, chooseFile > Manage Map or click theMP iconto open theManage Map dialog box.

2. In theManage Map dialog box, clickNew and enter a new map name in theName text field, and a description in theDescription text box.



e sets

3. Click theSelect all available data itemsicon, then toggleUse DefaultAppearanceon (red) and clickApply andOK .

4. Click Yes to the messageDo you wish to overwrite the map content data?

5. Click theZoom icon or choose View > Zoom, then clickMB1 and drag arectangle over the northeast quadrant of the 3D survey area.

6. Click MB1 to set zoom in on the selected area.

7. In the Basemap main window, click theMP icon or chooseFile > Manage Mapto open theManage Map dialog box.

8. In theManage Map dialog box, clickExtent to open the Map Extent dialogbox.

9. In theMap Extent dialog box, toggleCurrent Window Limits on (red) andclick OK .

10. In theContent area of theManage Map dialog box, use <Control > + MB1 todeselectCross sectionin the Data list.

11. ClickApply. If you finished changing the map clickCancel.

Post Boreholes on the Default Maps

1. In theBasemap main window, chooseFile > Open Map to open the Open Mapdialog box and selectDefault geophysical map.

2. In theBasemap main window, choosePost > Borehole Sets to open thePostBoreholes dialog box.

3. In thePost Boreholes dialog box, selectDef_borehole_set from theSelectborehole set.

4. Select either thedef_top_appear (default top) ordef_traj_appear (defaulttrajectory) appearance set from theSelect appearancelist.

5. Click on the large down arrow to move the selected borehole and appearancto theBorehole set/Appearance combinations list.

6. Click OK .


Schlumberger Build an Interpretation Framework - Seismic

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ExerciseExercise

Build an Interpretation Framework - Seismic

Build Seismic Window Display and Define Seismic Appearance

1. In theSeis%DV main window, chooseDisplay > Seismic lineto open theSeismic line selection dialog box.

2. In theSeismic line selection dialog box, toggleDepth on (red).

3. Click with MB1 to selectdepth class from theSelect Class list.

4. Change the inline to690.

5. Click OK and observe that vertical scale annotation is now in depth units.

Define Seismic Scale, Annotation and Culture

1. ChooseDefine > Scalesto open theSeismic Scalesdialog box.

2. Set theHorizontal scale to 4 Traces per inch andVertical depth scale to 500Feet per inch.

3. Click OK .

• • • • • •

NOTE: Seismic annotation is divided into Vertical trace labeling, Slice labelingTime labeling and Depth labeling.

4. ChooseDefine > Annotation to open theAnnotation dialog box.

5. In theVertical trace labeling area of theSectionfolder, set the first row of labelsto Line-tie, Label Inc to 1, Label Accent to Dead, Tick Inc to 1 and Color toblue.


Build an Interpretation Framework - Seismic Schlumberger

6. Click on the Z folder and set aMinor tick mark every500 feet and aMajor tickmark every1000 feet.

7. Click theCulture folder and selecttownship from theAvailable Culture Datalist. It should move to theSelected Culture Data list on the right.

8. TogglePost culture on vertical sections andPost Culture on Slices on (red).

9. Click OK to exit.

10. Zoom out by selectingView > Unzoom to view seismic profile with cultureposted.

Culture on Slice View

1. In theSeis%DV main window, chooseDisplay > Seismic line to open theSeismic line selection dialog box.

1. In theSeismic line selectiondialog box, toggleTime on (red) to change toTimeDomain.

2. ToggleSliceon (red) and type2000 ms in the Time (ms) Minimum text field.

3. Click OK . (Notice culture line posted).

4. ChooseDisplay > Seismic line to open theSeismic line selection dialog box.

5. In theSeismic line selectiondialog box, toggleCross-lineon (red) and type400in theCDP text field.

6. Click OK .

Define Display Specifications

1. ChooseDefine > Display spec to open theSeismic Display Specificationsdialog box.

2. Click on theDisplay stylebutton of theSeismic Display Specifications dialogbox and selectVIVA ( variable intensity/variable amplitude).

3. Click on theGain Control folder, setType to RMS (Root Mean Square), setPolarity to Normal, and setSource to Survey. Change theAmplitude value to200.

4. Click Update.



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5. Click on theVariable Area folder of theSeismic Display Specificationsdialogbox, click thePositive Color icon and select dark blue to change the positive fito dark blue.

6. Click OK to display the change in theSeis%DV main window.

7. ChooseDefine > Display spec to reopen theSeismic Display Specificationsdialog box and toggleFill to None to view the wiggle traces with no positive ornegative fill.

8. Click OK to view this change.

9. Reopen theSeismic Display Specifications dialog box and in theWiggle tracearea, change the wiggle traceColor to red.

10. ClickOK view the change and close theSeismic Display Specificationswindow.

Color Map

1. On the icon bar in the bottom left area of theSeis%DV main window, toggle theVariable Area/Variable Intensity icon toVI mode.

2. Click MB1 on the color bar at the bottom center of theSeis%DV main windowto change the color scheme of the display.

3. Hold down the <Shift > key and clickMB1 repeatedly on the color bar to scrollthe color left.

4. Hold down the <Shift > key down and clickMB2 repeatedly on the color bar toscroll the color right.

Create New Color Map

1. Hold down the <Control> key and clickMB1 on the color bar, or chooseUser >Colorbar to open theColormap management dialog box.

2. In theColormap management dialog box, select thegreyshades color schemefrom the displayed list.

3. Click MB1 at the far left end of the scale and set the color to 100% green tomake the maximum negative amplitudes green.

4. Click MB1 at the far right end of the scale. Set the color to 100% red to makemaximum positive amplitudes red.



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5. Click Interpolate.

6. Type in a new name in theName text box.

7. Click CreateandClose.

VI/VA, Annotation Toggles

1. In theSeis%DV main window, click theVI (variable intensity) icon toVA(variable amplitude).

2. Click theA icon (adjacent to the VI/VA icon) to remove all annotation from theseismic display. TheA icon now displays with a diagonal slash.

3. Click theA icon to redisplay the annotation.

Post Boreholes in the Seismic Window

1. ChoosePost > Boreholes to open thePost Boreholes dialog box.

2. In thePost Boreholes dialog box, selectYes for Post boreholes and select theDefault_borehole_set andDefault vertical appearance file.

3. Click the large down arrow and clickOK . If no boreholes appear, displayCross-line 400).

Seismic Preferences

1. In theSeis%DV main window, chooseUser > Preferences to open thePreferences dialog box.

2. Under theView folder In thePreferences dialog box, setReadout styletoActual and View Resizingto Adjust Scale.Under theDisplay folder adjust theScroll increment (%overlap) to 75 Horizontal and75 Vertical.

3. Click Update.

4. Click OK .

5. Place the cursor in the seismic display and click <Shift> + MB1 to display aReadout dialog box displaying the amplitudes of a small area within the greeoutline where you clicked. Close the window.

6. Scroll the seismic window by clicking on the small arrows at top and bottom left and right sides of the vertical and horizontal scroll bars respectively.



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7. ChooseView > Zoom to zoom in and view an area of the seismic display withithe large green rectangle.
8. Click and drag a corner of theSeis%DV main window to resize it and make itsmaller.

Question: How does the view differ from Reposition when thewindow is resized?

Answer:




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Chapter 3Wells and Boreholes

• • • • • •

OverviewOverview

Defining the visual workspace by posting well information allows a view of theoverall distribution of geology within the project.

Learning Objectives

After the lecture and doing these exercises you should know how to:

• create and manage Borehole Sets directly from basemap, from a list, ahow to use the Query tool to select boreholes for a borehole set

• define and manage Borehole Appearance Sets in Basemap

• create Borehole Sets in Seis%DV window

• create and manage Borehole Appearance Sets for vertical and time slposting

• how to post boreholes on Basemap

• how to post boreholes to Seis%DV


Wells and Boreholes Schlumberger


Schlumberger Wells and Boreholes

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ExerciseExercise

Wells and Boreholes

Create Borehole sets directly from Basemap

1. With the boreholes posted on the Basemap from the exercises in the previouchapters, in theBasemap window, selectEdit > Borehole Sets > CreateBorehole Set from Displayto open theCreate Borehole Set From Displaydialog box.

2. In theSelection Mode area of theCreate Borehole Set From Displaydialogbox, selectPoint.

3. In theSet Name text field, type in a new name and enter a description of the sin theDescription text field. If the basemap is hidden, drag theCreate BoreholeSet From Display dialog box out of the way, but do not close it.

4. In Basemap, click with MB1 on several posted boreholes to be included in thisnew borehole set. Note that each borehole changes to the active yellow colothe cursor passes over it. The name of each borehole appears in theBoreholesSelected window. When selection is complete, click onCreate to include theseselections in the newly named borehole set.

5. With theCreate Borehole Set From Display dialog box still open, changeSelection Mode from Point to Polygon, enter a newNameandDescription. InBasemap, click MB1 to start the polygon and click successive points aroundthose boreholes to be included in the new set. When the polygon is completeclick MB3 to get the pop-up menu and selectBreak to close the polygon.

6. All boreholes lying within the polygon will become active, as shown by theyellow color. The included borehole names will populate theBoreholes Selectedwindow. Click onCreate to write this new set to the database. To close the dialwindow, click onClose.

Create Borehole Sets from Lists in Basemap

1. Select Edit > Borehole Sets > Create Set from List to get theBorehole Setdialog window.



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2. In theName field, enter a new name and aDescription.

3. Highlight several wells from theAvailable boreholeslist; the selections willpopulate theBoreholes in borehole setwindow. ClickCreate.

• • • • • •

NOTE: If the Def_borehole_set is the only borehole set in theSelect/Create/Update/Delete menu, it may be necessary to move all theBoreholes in borehole setto theAvailable boreholeslist by clicking on theSelect none button. Once theAvailable boreholes list is re-populated,boreholes for the new Borehole set may be selected.

Use the Single Data Item Type Query Tool in IESX

1. With theBorehole Setdialog window still open from the previous exercise, clickon theQuery tool icon in the Optional select criteria section of the window tobring up theQuery Tool dialog window.

2. Click on thewith Attribute button to bring up the pop-up menu and selectdeeper than.

3. Type in12000 in the window which appears just below the “deeper than”selection.

4. Click Add Clause. The query in the window should now read:Find all Boreholedeeper than 12000 ft.

5. Click Apply.

6. Notice that theBoreholes in borehole set in theBorehole Setdialog box, stillopen behind theQuery Tool window, is populated.

7. Click on theSave Query folderand enter a name for theQuery and click onSave.

8. In theQuery Tool dialog box, click on Find Query... and scroll down the list tofind the query just created and saved. This saved query can now be posted oBasemap.

Create Borehole Appearance Sets in Basemap

1. In theBasemapwindow, selectEdit > Borehole Sets > Borehole appearancetoget theManage Borehole Appearance dialog box.



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2. Toggle theDisplay options on or off as desired; chooseTop, Bottom and/orDeviation in any combination.

3. Toggle onAnnotate for at least one selection and chooseUser symbol for oneDisplay from the pop-up symbol palette.

4. If Deviation is toggled on, set theIndex to one of the selections from the pop-upmenu. Select aLabel increment andTick increment, using something differentfrom the default.

5. In Appearanceselect Symbol, text size andcolor.

6. In theBoreholeannotation section, select four parameters from theSelection listand, depending on the selections made in theDisplay section, place them in theTop, Right, Bottom andLeft of theFour corner Format. This is accomplishedby highlighting the parameter in theSelection list and then clicking on theposition in the location list. For example: highlight Kelly bushing in theSelection list and then click onRight in the location list. This will place Kellybushing in the chosen position and becomes a new appearance set. Enter aname in theNamefield and aDescription. Click onCreate in the control area ofthe dialog box.

7. Post a borehole set using this new appearance.

• • • • • •

TIP: If you have forgotten to enter a new name, an error message appears statingthe set already exits for that name. A previously created appearance can beupdated at this point by highlighting a set to update in theSelect/Create/Update/Deletelist and clicking on theUpdate button in thecontrol section of the dialog box.

Create Borehole Appearance Sets in Seis%DV

1. In theSeis%DV window, selectDefine > Borehole appearanceto open theBorehole Appearance Managementdialog box.

2. In theBorehole Appearance Management dialog box, type a new name in theName text field and type a description in theDescription text field.

3. Set theDisplay Parametersto postTop, Bottom, andDeviation.

4. Choose symbols by clicking on the symbol next to theTop Symbol box.



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5. SelectTime for the Z range parameter in theSelection Criteria portion of thewindow and leave the defaults.

6. Select theDisplay Methods folder and chooseContinuous perspective forProjection method and selectTime for Constraint method.

7. EnterMinimum andMaximum time (ms) values in the respective text fields.

8. From theMarker folder Selection Criteria area, click on the blueList buttonand select 2 or 3 markers.

9. To close theGeological Horizonsselection window, click onOK.

10. SetDisplay Parameters. Change theName to Marker Name. Toggle onTick .

11. Click onCreate.

12. Post boreholes on the map using various borehole sets and appearance setcombinations as time permits.

Post Boreholes with New Appearance Sets in Basemap

1. In theBasemap main window, choosePost > Borehole Setsto open thePostBoreholes dialog box.

2. Click to select one or more of the new borehole sets created in the first part this exercise.

3. Choose the newly created appearance from theBorehole Appearance list byclicking on it; notice that the name appears in theAppearance name field.

4. Now click on the black arrow button in the center of theSelected SetAppearance Combinations area of the dialog box. Click onOK . TheSelectedBorehole Appearance Combinations set will populate the window.

5. Double click the borehole path in theSeis%DVmain window or double-click theborehole symbol inBasemapto open theBorehole Editor dialog box.

Use the Query Tool in the General Data Manager (Optional exercise)

1. From theApplication Manager, click on theData icon in the Managers sectionof the dialog box, to bring up theData Management catalog.

2. In the Data Managers list of the Products section of the dialog box, double con General.



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3. In theData manager window, click on the Query Tool icon.

4. HighlightArray in theFind all list; toggle on the first filter and select withAttribute and choose Code.

5. Type ingr in the window to the right of the = sign.

6. Click Add Clause.

7. Click Apply.

8. Save Query by clicking onSave Query button and entering a name(Array_Gamma_Ray) in the text box. Click onSave.

• • • • • •

TIP: Try making and saving other queries in the GDM (i.e. borehole queries) as timallows. Also create and save additional appearance sets.Define boreholeappearance sets to go with the borehole sets you created previously. Usedifferent colors to distinguish the different appearance sets. Post the borehpath, a user symbol at the top and a borehole symbol at the bottom-holelocation, and borehole annotation at the bottom location.

• • • • • •

NOTE: Currently, borehole queries which are saved using the Query Tool in thGeneral Data Manager can be used in either of the Query Tools in basemand seismic windows. This only applies if the query performed in GDMfor boreholes. In either basemap or seismic query tool, click on the FinQuery button and click on Refresh Query List. Recently saved boreholqueries in GDM will appear in the Queries list window and will be availablfor use.




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Chapter 4

• • • • • •Browse Project Data

Overview

This chapters exercises covers the basic software functionality and browstechniques for using the Basemap and Seis%DV windows. Knowledge ofthese techniques facilitates data viewing and enhances the interpretationprocess.

Learning Objectives

Browse the Basemap Window includes:

• the different line types we can use to display seismic including inline,crossline, traverses and composite.

• how to select seismic lines from the Basemap.

• how to use and manage the Basemap readout box displays

• the creation and use of seismic areal paths, both polygon and rectang

• how to add, move and delete User-Defined Map Culture Data

• how to zoom, unzoom, and other View options

• setting Basemap preferences

Browse the Seismic Window includes:

• the use of multiple display windows

• how to copy windows parameters

• the use of vertical and horizontal Intersect tools

• selecting seismic lines

• the rolling of lines including locked views

• how to fill other displays with rolled or intersected tools and other classesdata.


Browse Project Data Schlumberger

• extending a simple traverse path and reversing the display direction

• how to use Seismic User Preferences


Schlumberger Browse the Basemap Window

ExerciseExercise

Browse the Basemap Window

Select seismic lines from Basemap

1. Click theLine/path Send icon to be in the Line Select mode.

2. Move the cursor to theBasemap main window.

3. Click MB3 and chooseCrosslinefrom the pop-up menu.

4. Move the cursor to the 3D survey and clickMB1 to select the desired cross line.If the ITC filter in Basemap is set toSend Paths, the ITC filter in Seis%DV isset toRecv Line Selection, and theITC connection icon is open in bothwindows, the selected seismic line will display in the Seis%DV window.

5. Click MB3 and chooseInline from the pop-up menu.

6. Click MB3 and chooseControl to open thePath Send dialog box.

7. In theSelection Mode area of thePath Send dialog box, clickSegment modeon, (red).

8. Move the cursor to the 3D survey and clickMB1 on two points of anInline todefine the desired segment and send the segment to theSeis%DV window.

9. ChooseLine Mode andClose.

Select a foldout seismic line off the base map in line mode.

1. ChooseSend > Seismic Foldout, or click theInline - Crossline Foldout Sendicon.

Line/path Send icon

Inline - Crossline Foldout Send icon

GeoFrame 4 Basic Seismic Interpretation Using IESX Ch 4 Exercises - 3

Browse the Basemap Window Schlumberger

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2. Move the cursor into theBasemap, then clickMB3 > Foldout direction.

3. Select one of the fourFoldout direction combinations.

4. Move the cursor onto the 3D survey and clickMB1 to select the desired foldoutand send it to theSeismic window.

Change annotation to display red line at fold point on seismic display.

1. In Seismic window selectDefine > Annotation.

2. Change one of theLabel Typesto Turn pt, set theLabel Accentto Dead,and theLabel andTick increments to 1.

3. Select red from the color palette and close the annotation box by clicking onOK .

Use Basemap to define and display a traverse in the Seis%DV window.

1. SelectEdit > Seismic Traverse Path > Simple or click on thetraverse icon.

2. Move the cursor to the map and clickMB1 at the end points and any turn points

3. Click MB3 and selectSave. Enter name/description in active window. Click onOK to close.

Create a contiguous composite path display

1. In the basemap selectEdit > Seismic Traverse Path > Composite. or click theComposite icon. Move the cursor into basemap window and clickMB3 >Control, or click on the Composite icon then MB3 > Control.

2. In Path Define make sure that theDefinition Mode is set toContiguous Mode.Click Close.

3. Move to the map area and select a series of 3D and 2D lines for display. Use<Shift> + MB1 to lock to an inline or cross line. UseMB3/Break to display thecomposite in the seismic window.

• • • • • •

NOTE: When creating a composite path from a 3D to a 2D line, clicking MB1 on the 2D lwill lock the segment to the 2D line. Click MB1 on the 2D line to release the lo

Create a disjointed composite path display.

1. In the basemap selectEdit > Seismic Traverse Path > Composite

Ch 4 Exercises - 4 GeoFrame 4 Basic Seismic Interpretation Using IESX


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2. Move the cursor into basemap window and click MB3 > Control, or click on theCompositeicon, then MB3 > Control.

3. In Path Define make sure that theDefinition Mode is set toDisjoint Mode.Closethat window.

4. Move to the map area and select a series of 3D and 2D lines for display. UseMB1 to select a line segment andMB3/Break (not terminate) to end a linesegment. Start a new segment withMB1. After selecting 3 or 4 line segments useMB3/Terminate to display.

Define and save a borehole path traverse.

1. Change theDefinition Mode back toContiguous (Edit > Seismic TraversePath > Composite; MB3 > Control)

2. In the BaseMap post a deviated borehole (Calcite-32 or Diamond-14). (Hint:Edit > Borehole Sets > Create Set from List)

3. SelectEdit > Seismic Traverse Path > Borehole and clickMB1 on the eitherthe top or bottom of the borehole and drag attached rubberband to opposite of borehole then clickMB3 > Break to end. ClickMB3 > Save and enter nameand description.

Define and save a polygon path and a rectangular path on the base map.

1. In the basemap selectEdit > Seismic Areal Path > Polygonal.

2. Move the cursor to the map and clickMB1 to define the polygon.

3. Click MB3 and selectSave to save the polygon path.

4. Define aRectangular path and save.

5. Click the path posting icon to toggle the path postingon andoff.

.

6. ChoosePost > Seismic Paths to open thePost Seismic Paths dialog box.

7. In thePost Seismic Pathsdialog box, click Polygonal Paths. on (red) and selectthe saved polygonal path from thePath Selection list.

Path posting icon on Path posting icon off


Browse the Basemap Window Schlumberger

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8. Change the appearance of the polygon path. Click theAppearance tab, thenselect a thick line width, color (12), post path name, and change the text sizelarge. Click onOK .

Post saved traverse on basemap. Do not post saved polygon andrectangular paths.

1. Make sure the path posting icon is turned on. SelectPost / Seismic Paths

2. ToggleON Rectangular Pathsand click theContent Tab. Make sure the savedrectangular path is not highlighted (selected). Use theClear Selections icon toun-highlight the path from theContent Path Selection list. Do the same for thePolygonalpath.

3. Toggle ONComposite Traverse Paths and select the saved path. Click onOKto post.

Create and define culture data.

1. From the basemap selectEdit > Map Culture Data and selectUser_layer_5 byhighlighting in theActive Layer.

2. ToggleOn Add Polylines and click onClose to dismiss the pop up window.Move the cursor into the map and draw withMB1 a polygon with five points thenclick MB3 > Close to end.

3. Click MB3 > Control to bring back the pop up window. SelectAdd AnnotationandClose.

4. Point the cursor in the middle of the polygon and clickMB1. Type AREA ONEand click onOK .

5. Bring back the pop up Edit Map Culture Data window and selectMove MapCulture Data. Move the text to a position outside the polygon by clickingMB1on the text item and moving the cursor to new position. ClickMB1 to set.

6. Draw a line from the text to middle of polygon with a Polyline.

7. Change the text appearance to larger and blue color. SelectPost > Culture. Clickon theContent Tab and highlight User_layer_1 through 10 (Click and drag witMB1).

8. Click on theAppearance Tab, selectCulture User_layer_5 using arrow next towindow and change the Foreground color to (5) and Text Size to large. ClickOK .



ck.

9. SelectEdit > Map Culture Data . Toggle on (red)Delete Map Culture Data.UseMB1 to select all culture items on the map (they will highlight in yellow).Click MB3 > Delete to remove the culture data.

2D scroll option (Basemap)

1. Zoom in on the northwest corner of the basemap usingzoom icon.

2. Click on the 2D scroll icon in the bottom right ofBasemap to bring up the scrollwindow and move yellow reference rectangle to the southeast corner and cliMB1. To close the window double-click in the upper left corner of the window

3. Unzoom the map using the unzoom icon.


Browse the Seismic Window Schlumberger

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ExerciseExercise

Browse the Seismic Window

Intersect Fill

1. In theSeis%DV main window, chooseDefine > Layout, or click theLayouticon to open theView layout selection dialog box and change the view layout todisplay a rectangle across the top half of the window and two squares side byin the bottom half of the window.

2. Use the horizontal intersect tool to display a time slice in the top view. Make sthe 8mig class is being used.

3. SelectDisplay > Fill > Intersect to fill the bottom two views with an intersectinginline and cross line. Use theFill Intersect both icon (looks like a cross).

4. Place the cursor in the top view and locate an area of interest on the slice. CMB1 to generate a vertical and horizontal intersect

Change Seis3DV window layout and copy one view to another.

1. SelectDefine > Layout to change the number of views to 4.

2. Display an in-line in the first view. You may select the in-line from theBasemapor useDisplay > Seismic Line from theSeismic menu.

3. SelectDisplay > Fill > Roll Forward to display in-lines in views 2 - 4.

4. SelectView > Copy to get theView copy pop-up menu. ClickMB1 in view 1under theCopy From, and then clickMB1 in view 3 under theCopy Tocolumn. Toggle ON all view attributes and then click onCopy. AnswerYes totheIESX Caution message. Repeat and copy view 2 into view 4.

5. Zoom the seismic line in the third view and then copy the scale of the zoomethird view into the fourth view. Turn all view attributes off exceptScale to copythe scale of view 3 into view 4. close theView copy dialog box

6. Make the first view active by clickingMB1 in the small box. Change the view toone view usingDefine > Layout.


Schlumberger Browse the Seismic Window

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Select seismic line from seismic window.

1. Display an in-line by using theDisplay menu option.

2. SelectDisplay > Seismic Line, set the type to Inline. Enter a line numberbetween 500 and 770. Click onOK . Make sure that the Class is set to8mig inSelect class list text box.

• • • • • •

NOTE: When entering information in a text entry box, you may double clickMB1 in the boxand then type the new information, or clickMB1 and add to or delete from theexisting text. It is not necessary to press return.

Select Time/Depth slice from Seismic window.

1. In theSeismic window, selectDisplay > Seismic Line, set type toSlice. Timeslices exist between 0 - 3500 ms. Set the Domain toTime. In theMinimum textbox type in some number of ms between 0 and 3500 ms. Choose the 8mig cClick onOK .

2. SelectDisplay > Seismic Line, and set the Domain toDepth. Set type toSlice.Depth slices exist anywhere between 5,408 and 10,000 ft. Type in 7300ft in tMinimum depth window. Click onOK .

3. Display an in-line or cross line by using the Intersect icon. ClickMB1 on theIntersect icon, move the cursor to the depth slice and clickMB1 at the desiredlocation

.

• • • • • •

NOTE: You may check availability of slice volumes in theIESX Data Manager (IESXSession Manager > Application > Data Manager > Slice).

Roll seismic lines forward, backward and manually

1. In the Seismic window, selectUser > Display > Roll or Control MB1 onDisplay > Roll pull-down menu.

2. Set the rolling increment to 10 for in-lines and cross lines and 30 for radialdegrees (negative number radially rolls counter clockwise).



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3. Use the roll menu option (Display > Roll) and/or icons to roll forward, backwardand radially.

4. For radial roll, click icon or selectDisplay > Roll > Roll Radially and movecursor to seismic section to select the pivot point, then clickMB1.

• • • • • •

NOTE: Be sure to note the trace or CDP number of the pivot point if you want to contina radial roll around the pivot point.

Fill multiple seismic views

1. SelectDefine > Layout to change layout to 4 horizontal views.

2. Click far left box in row of seismic view icons at bottom left corner of view 1 tmake the view active. When the view is active, a check mark is displayed in tbox.

3. SelectDisplay > Fill > Roll forward to fill all views.

Roll locked views synchronously

1. Click on the padlock icon in the row of seismic view icons at the bottom leftcorner of each view to lock views. When the view is locked, the padlock isclosed.

2. SelectUser > Lock to change the roll locked views definition to synchronous.

3. Click on theRoll forward icon to roll seismic in all views forward

.

Seismic view icons. Check mark indicates active view. Openpadlock indicates view is open to receive and display seismic.

Roll forward icon


Schlumberger Browse the Seismic Window

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Roll locked views independently

1. Note the inline position of the four windows which have been rolledsynchronously. Also, observe the changes of line segment positions on theBasemap.

2. SelectUser > Lock to change the roll locked views definition to independently

3. Click on the Roll backward icon to roll the seismic views backwards.

4. What are the differences between rolling synchronously and rollingindependently?

Secondary Fill Order

1. In theSeismic window, selectDefine > Layout and choose the second layoutoption. Use theDefine layout icon as an alternative.

2. Make the first view active (put a check mark in the small box).

3. Change the Domain toTime. Display > Seismic Line, set type to crossline 400,select mig8 class Click onOK .

4. SelectUser > Display > Fill to bring up theFill definition dialog box.

5. Populate theSecondary Fill order list window with variance (variance seismicclass) by clicking on variance in theClasses list window withMB1. Click onOK .

6. Make the first view active, selectDisplay > Fill > Secondary to fill second viewwith variance class line.

7. Move the cursor through the primary view and observe the track of the crossthrough the secondary display (cursor tracking is the Default setting inUser >Preferences).

8. ChooseDefine > Layout, or click thelayout icon to change the seismic view toone view.

Fold vertical

1. Use the menu itemDisplay > Fold Vertical and select one of the four options.

2. Move cursor into seismic view and clickMB1. Observe fold in basemap.



lay

3. Annotate the fold intersection fromDefine > Annotation.

4. Set one of the label types toTurn Point , Label Inc = 1,Label Accent= dead,Tick Inc = 1, and setColor. Click OK .

5. SelectUser > Display > Fold and toggle Center fold position on display forVertical fold . Click onOK .

6. SelectDisplay > Fold Vertical. Choose another vertical fold on the seismicdisplay.

7. Observe the position of the turn point in theSeismic window. Change the foldposition back to keep and observe (User > Display > Fold).

Fold horizontal

1. Change the seismic Domain toDepth and select inline 600. Click onOK .

2. Zoom out and fill the seismic window with the whole line and change the dispto VA (variable area) by clicking on theVI/VA toggle in lower left corner.

3. Select aDepth slice using the horizontal intersect icon. Zoom in to the depthsnear 5408.

4. Select one of four horizontal fold options usingDisplay > Fold Horizontal.Move cursor onto depth slice and clickMB1 to select fold location

.

5. UnderUser > Display Rollselect Roll Slice and changeDepth to 100 ft. Toggleon (red) the section underDirection to Roll Vertical section in theRolldefinition dialog box andForward Roll the horizontal fold. Click OK .

6. Forward roll the horizontal fold.


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Chapter 5Interpretation Techniques

• • • • • •

OverviewOverview

This chapter describes tools and techniques that are available to make seisminterpretations using GeoFrame IESX applications.

Learning Objectives

In this chapter you will learn to

• create, manage and interpret horizons and faults, fault contacts, and faboundaries.

• post interpretation in Seis%D/V, Basemap, and GeoViz Explore

• assign(rename) and delete several types of interpretation.

• use readout displays and seismic preferences to assist in interpretatio

• use Seismic and Basemap interpretation tools to flatten horizons, post gand attributes in Seis%D/V and use images to compare seismic betwelines and along faults.


Interpretation Techniques Schlumberger


Schlumberger Interpretation Techniques

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ExerciseExercise

Interpretation Techniques

These exercises use the tools and techniques that are available to make quick aaccurate seismic interpretations using GeoFrame IESX applications.

Create Faults

1. Set the seismic domain back toTime if you are in depth. In theSeis%D/Vwindow, chooseDefine > Fault, or click on theFault Management icon to opentheFault Managementdialog box.

2. In theFault managementdialog box, typefault_1 in theNametext field.

3. Set theLine weight to medium thickness

4. Set all other parameters as desired.

5. Click Add to add the new fault to theFault select list.

6. Click theActive button to make it active fault.

7. Click Close to close theFault Management dialog box.

Create Horizons

1. In theSeismic window selectDefine > Horizon,or click on the Horizonmanagement icon to open theHorizon Managementdialog box.

2. In theHorizon Managementdialog box, typehor_1 in theName text field.

3. SetSnap type to Positive.

4. SetSnap event to Largest

5. Set the snap window above and below the event toTop (in ms) = 10, andBottom(in ms) = 10.


Interpretation Techniques Schlumberger

6. Set theLine Color, Line weight andLine style as desired. ClickClose.

7. Click Close to close theHorizon management dialog box.

Post faults and horizons in the Seis%D/V window

1. In theSeis%D/V main window, chooseDisplay > Seismic line to open theSeismic Line Selection dialog box.

2. In theSeismic Line Selection dialog box, toggleCrosslineon (red) and type400 in theCDP text field. Make sure the8mig class is selected.

3. Click OK to display crossline400 in theSeis%D/Vmain window.

4. In theSeis%D/V main window, choosePost > Interpretation to open thePostInterpretation dialog box.

5. In theHorizons area of thePost Interpretation dialog box, selectHOUSTON_INTERP from the displayed list of horizons.

6. Click on theParameters tab and SetLabels to Active only, Label position toLeft , Label orientation to 45 degrees, andSegment label to Last.

7. SetContacts to All selected.

8. SetSlice posting to Arrows and type10 in thePost above slice (ms) andPostbelow slice (ms) text fields. Set the Fault Label toNone.

9. Click on theFault tab of theInterpretation posting dialog box and select allfaults in the displayed list.

10. Click on theCrosspost tab and toggleCrosspost horizons and faultson (red)and select all surveys in the displayed list for crossposting.

11. ClickOK.

Post faults and horizons in the Basemap window

1. In theBasemap main window, choosePost > Interpretation to open theInterpretation dialog box.

2. In theInterpretation dialog box, clickHorizons to open thePost SeismicHorizons dialog box.


Schlumberger Interpretation Techniques

ve

3. In theContent folder of thePost Seismic Horizons dialog box, selectHOUSTON_INTERP from theAvailable list. Click OK .

4. In theInterpretation dialog box, main menu clickFault Contacts to open thePost Fault Contactsdialog box.

5. In thePost Fault Contacts dialog box, selectHOUSTON_INTERP from theSelect by Horizonlist and use theSelect All icon (middle icon) to select allfaults in theSelect by Fault list.

6. TogglePost Unassigned Contactson (red).

7. Accept the default values for all other parameters and clickOK .

8. In theInterpretation dialog box, clickCancel to close the dialog box.

• • • • • •

NOTE: Observe the information fields in the lower left corner of theSeis%D/V mainwindow to see which fault and horizon are active. Click to toggle between actifault and active horizon using the MB3 popup.


Interpret Horizons and Faults Schlumberger

ExerciseExercise

Interpret Horizons and Faults

Make new fault and horizon active in Seis%D/V window

1. In theSeis%D/V main window, click theFault management icon to open theFault management dialog box.

2. In theFault management dialog box, click to highlight and selectfault_1 fromtheFault select list.

3. Click Active to make the selectedfault_1 the active fault. ClickClose.

4. In theSeis%D/Vmain window, click theHorizon managementicon to open theHorizon management dialog box

5. In theHorizon management dialog box, click to highlight and selecthor_1from theHorizon select list.

6. Click Active to make the selectedhor_1 the active horizon. ClickClose.

Post only new interpretation in Basemap window

1. In theBasemap main window, choosePost > Interpretation, or click thePostInterpretation icon if it is available) to open theInterpretation dialog box.


3. In thePost Seismic Horizons dialog box, click to highlight and select thehor_1horizon.

4. Click OK to posthor_1 on the basemap.

5. In theInterpretation dialog box, clickFault Contacts to open thePost FaultContacts dialog box.


Schlumberger Interpret Horizons and Faults

0

6. In thePost Fault Contacts dialog box, selecthor_1 from theSelect by Horizonlist and selectfault_1 from theSelect by Fault list.

7. TogglePost Unassigned Contactson (red).

8. Accept the default values for all other parameters and clickOK .

9. In theInterpretation dialog box, clickCancel to close the dialog box.

Post only new horizon and fault in Seis%D/V window

1. In theSeis%D/V main window, choosePost > Interpretation to open theInterpretation posting dialog box.

2. In theHorizons area of theInterpretation posting dialog box, setSelect toActive to select only the activehor_1 horizon.

3. In theFaults area setSelect to Active to select only the activefault_1 fault.

4. Post cross line460 using theBasemap for line selection.

• • • • • •

NOTE: At this point in the interpretation process, only generic fault,fault_1 will be used topick all faults. The faults will be reassigned later in this exercise.

Interpret faults

1. Interpret at least three large faults on crossline 460 from a time of 750 to 225ms.

2. Click MB1 to start fault definition, continue defining the fault withMB1, undothe last click point withMB2. MB3 > break saves the interpretation.

3. Interpret at least three faults on crosslines ranging from 460 to 390. Use theDefault Roll Increment of 10 lines defined underUser > Display > Roll. UsetheRoll icons to facilitate interpretation.

Edit a fault on Crossline 460

1. Point to the fault to edit, use Shift+ MB2 to make that fault the active fault (ifneeded).

2. Check to see if program is in Interpret Mode. ClickMB3 > Interpret if needed.


Interpret Horizons and Faults Schlumberger

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3. Click MB1 on the fault segment at the beginning or the end of the fault segmto extend the fault segment vertically. The fault segment will show X’s wherevan interpretation point was picked and a “rubber band” will become attachedthe cursor. ClickMB1 as many times as needed to define the new fault segmelocation,MB2 will removes the last interpretation point, andMB3 break will endthe interpretation.

• • • • • •

NOTE: You can now join separate fault segments usingMB3 > Join. Click MB1 on the endof the first fault segment, then clickMB3 on the end of the other fault segment anchooseJoin.

Interpret horizon

1. After completion of the fault interpretation return to crossline 460.

2. Make hor_1 active.Hint: use the toggle button if the horizon name appears in thorizon window.If the horizon name does not appear userMB3 > H_list todisplay a list of horizons from which you can select hor_1.

3. With crossline 460 in the seismic view start interpretation at inline 500 andcrossline 460. Pick the strong positive reflector at approximately 1000 ms.

4. Begin interpreting the horizon by clickingMB1. Continue to clickMB1 to add tothe interpretation OR use theMB3 > Track option.

5. UseMB3 > Contact-UP or Contact-DN to interpret fault contacts. (observehorizon and fault contact interpretation being posted on the basemap. UsePost >Interpretation to activate the base map if necessary). Make sure you interpreupthrown and downthrown contact for each fault/horizon intersection

6. Continue the horizon interpretation from crossline 460 to 390.

Fault contact edit

1. Create and save one traverse on the Basemap extending from the northwestsoutheast area of interpretation as follows:

2. On Basemap, selectEdit > Seismic Traverse Path > Simpleor use the traverseicon.

3. Click MB1 to begin the traverse. ClickMB1 to continue andMB3 andSave tosave the traverse.


Schlumberger Interpret Horizons and Faults

.

.

.

4. Now pick the faults and hor_1 on the traverse.

5. UseMB3 andContact to position diamond shaped horizon/fault contact pointsZoom in on the contacts if necessary.

6. To edit fault contacts, selectMode > Contact edit to receive theContact editingpop-up menu.

7. SelectPoint mode andUpthrow. Click on the contacts to be shown on theupthrown side of the fault along the traverse. ClickMB3 and selectUpthrow orselect the apply button on the Contact editing dialog box.

8. Do the same for the downthrown contacts. Click onCloseand change mode backto interpretation usingMB3 > Interpret .

Multiple view

1. Return to crossline 460.

2. Divide the seismic window into two horizontal views. (Define > Layout).

3. Fill the second view with an intersecting Inline in one of the three fault blocks(Display > Fill > Intersect)

4. Interpret the horizon using the seed points in the second view (inline).

5. Make the first view active (click on small box in lower left corner of first view)

6. Repeat theFill technique, described above, in the other two remaining faultblocks. Use crossline 460 in view one.

7. Make view one active and Fill the second view using theDisplay > Fill > RollBackward feature.

8. Interpret thehor_1 horizon in view two.

9. Select 3 or 4 more inlines from the basemap and continue interpreting thehorizon using intersect points as guides in View 2.


Assign Faults to Interpretation Schlumberger

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ExerciseExercise

Assign Faults to Interpretation

Several methods are available to assign faults to interpretation.

Assign faults on Seismic section

1. ChooseDefine > Layout and select the two horizontal views option.

2. Using multiple windows, post crossline 460 in view 1 and post crossline 450 view 2.

3. Create two new faults,fault_2 andfault_3. Make sure faults 1, 2, and 3 havedifferent colors assigned to them.

4. Post all three faults and contacts in bothSeismic and inBasemap usingPost >Interpretation .

5. Assign one of the displayed faults tofault_2 on crossline 460 usingMode >Fault assign to activate theFault Segment Reassignment dialog box.

6. In theAssignment window selectfault_2. Select byFault Segments and toggleon thePoint Selection Mode.

7. Move the cursor to the fault to be re-assigned and clickMB1 to highlight thefault, thenMB3 to selectFault assign.

• • • • • •

NOTE: The fault and the fault contacts have acquired the characteristics of fault_2, but oon crossline 460.

8. Return toInterpret Mode with MB3 > Interpret .


Schlumberger Assign Faults to Interpretation

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Assign faults on a slice

1. Create a time slice on crossline 460 in the first view. Note the fault intersectioon the slice.

2. Choose a fault trend on the slice. Assign this fault tofault_3 using the polygonmethod by selectingMode > Fault Assign. If theFault Segment Reassignmentdialog box does not appear, selectMB3 Control to open.

3. Selectfault_3, toggle onPolygon for theSelection Mode.

4. On the slice, draw a polygon around the fault trend to be assigned. ClickMB3andBreak to close the polygon. Note that all the fault intersections chosen nocontain a red activation circle.

5. Click onMB3 again and chooseFault Assign to assign all the faultssimultaneously.

6. The fault segment assigned tofault_3 in the slice is now changed in the secondseismic view. If the faults disappear, you need to make sure the faultinterpretation is posted.

Assign faults in Basemap view

Three fault trends should be present on theBasemap. If they are not. post the faultsegments and the contacts for the three faults. Assign the northernmost fault trefault_1, the middle fault trend to fault_2 and the southernmost fault to fault_3.

1. On theBasemap selectEdit > Fault Segment > Assign.

2. Selectfault_1 from theAssign to faultwindow, selectContacts, and use theBypolygonmethod.

3. Draw a polygon around the northern fault trend contacts withMB1. Click MB3 >Break to select the fault contacts within the polygon. Notice that all the faultcontacts have changed to the active color (The default color is yellow).

4. Click MB3 again toAssign.

5. Repeat the assignment process forfault_2 andfault_3.

6. Return toSeis%D/V and look at the faults on several lines by scrolling view 2.



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Create the fault boundaries on Basemap for the three previouslyinterpreted faults

Fault boundaries are used as modeling constraints for autopicking and for griddiand contouring inBasemap.

Set the Readout display

1. Open aSupplemental Readout Display by going toUser > Readout.

2. From theReadout Set list chooseContact Horizon, Contact Fault,Contact Zusing the drag and drop method:

3. Click onOK to close the dialog box and display theSupplemental Readout.

4. Roll the cursor over any fault contact to identify the fault and horizon associawith the contact.

Add/Edit Fault boundaries

There are three ways to add fault boundaries in GF 4. Thefirst is the manual method.Second, you have Polyline mode,third you have the computer assisted drawing calleFault chaining. Fault chaining requires an upthrown and downthrown contact paicalculate the midpoint which is used to draw the fault boundary. The first exercisuses the manual method.

1. SelectEdit > Fault Boundaries to display theEdit Fault Boundaries dialogbox. Make sure theEdit Mode is set toEnter.

2. Click MB1 on theSelect Horizon button and choosehor_1. Click Close.

3. Click MB1 on theSelect Fault button and selectfault_1. Click Close.

4. Set theSnap Tolerance to 15.

5. Use the Supplemental Readout to identify the faults.

6. Zoom in to the area of interest in order to facilitate drawing the fault boundar

7. Begin drawing with MB1, continue withMB1, delete last pick withMB2, andMB3 to close the polygon.

8. Click Close. The fault boundaries associated with the active horizon now appin the same color as the fault contacts and the fault traces are color-filled. If nfollow the steps below. Use theEdit mode to adjust the fault boundary.



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9. To make the fault boundaries filled selectPost > Interpretation > FaultBoundaries. ThePost Fault Boundaries dialog is displayed.

10. Select theAppearancetab toggle ONFill Fault Polygons and chooseFault forAppearance.

11. From theContents tab, deselect all faults, then reselectfault_1, fault_2, andfault_3.

12. Click onOK .

Now we will draw a fault boundary using thepolyline mode.

1. Click Edit Fault Boundaries and selectfault_2 to be used in the interpretation.

2. Check to make sure theEdit Mode is set toEnter.

3. Click MB3 and toggle thepolyline mode on.You should get a small white circlewith a black outline that follows your cursor

4. Place the circle over the contact and click MB1 on all the upthrown contacts, tall the downthrown contacts then onMB3 > Close. It should automatically snapthe fault boundary to the contacts.

5. If any part of the fault boundary is incorrect, switch toEdit underEdit Modeand make any changes.

Now we will draw a fault boundary using theFault Chaining mode.

1. Set theEdit mode to Fault Chaining, and selectfault_3.You should see someorange dots between the upthrown and downthrown contacts. Make sure eapair you want to use has an orange dot. If you are missing a matching contaselect the line and interpret a contact.

2. Make sure theDirectional Search is toggled on. Click and drag on the center othe circle with the arrows to move it to the approximate middle of where the faboundary should be.

3. Increase theSearch Radiusslider until the circle incorporates all the orange dotalong the fault boundary. Also, move theSearch Directionslider until the arrowson the circle align with the direction the fault boundary should go.



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4. Click MB3 > Create to create the fault boundary forfault_3. If the faultboundary is not satisfactory, clickMB3 and selectUndo Last. Change theparameters or ask the instructor for suggestions to better pick the fault boundUse theEdit mode to make any adjustments to the fault boundary.

Seismic Tools

1. Create a second horizon, you choose the name, oncrossline 460 at theintersection ofinline 760 and approximately1700 ms.

2. Determine whether to use positive or negative amplitude based upon the reflto be picked. Use the tools listed below to assist in the interpretation.

3. Post the new horizon in both seismic and basemap views. Also post the conin Basemap.

4. Set additional horizon parameters such as tracking and snapping as needed

5. Pick the same range of lines fromcrossline 460 to 390.

Image Block

Image block can be used to correlate interpretation from one fault block or area oseismic view to another block or area. Use theImage Block tool to aid in interpretingthe new horizon.

1. Select any interpreted crossline between 460 and 390.

2. SelectTools > Image Block.

3. To define the block, clickDefine and draw a polygon. SelectMB3, thenBreak,to end the polygon. Now clickPlacement and point to the defined block andclick MB1. Move the mouse and the block will follow. Click MB1 again to pasthe image down.

4. To remove the Image Block, open the dialog boxTools > Image Block andtogglePost off.

Display line with a fault picked, and slide data along fault

1. SelectTools > Fault Slide

2. To define the data to slide, clickDefine, click on 2 points on the fault with MB1and then move the cursor to the left or right of the fault to define the area of fslide and clickMB1 to set the area.



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3. Now clickSlide and slide the data with the adjustment control arrows.

4. Click Close and use theRefresh seismic display icon to erase the fault slideimage.

Flatten a Seismic Horizon

Another way to check the interpretation correlation across a fault is to flatten thezon on a seismic line.

1. Flatten the new horizon on any interpreted line.

2. SelectTools > Flattening

3. In a normal faulted dataset patches are not an issue so leave theHorizon PatchStacking toggled toDeepest. Set Interpolate toDead

4. Point to the newly interpreted horizon on any seismic line and clickMB1 (ortype in the name in the name window).

5. Point the cursor to the desired flattening time and click MB1 (or type theflattening time).

6. To return the view to normal turn Flattening toOFF in the Horizon flatteningdialog window.

Posting Grids/Attributes

1. In Basemap, post theAcoustic_Amplitude attribute for theHOUSTON_ASAPhorizon

2. On theBasemap selectcrossline 525.

3. In the seismic window selectPost > Grids/Attributes. Under theGrid Filteroption make sure the correct interpretation model is selected and toggled toInterpreted in.

4. A list of Available Grids is displayed. Choose theHOUSTON_ASAP then theAcoustic_Amplitude grid under theAvailable Grids list and click onApply.

5. Click OK .

6. In Seis%D/V, move the cursor and tie what you see on the basemap to thedisplay at the top of the seismic window.




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Chapter 6Areal Operations

• • • • • •

OverviewOverview

Seis%D/V Areal Operationsallow you to manipulate digitized horizons and faultfor an entire survey or a specified portion of a survey (areal extent).An areal exmay be an entire 2D or 3D survey or whatever part of a survey you specify.

Learning Objectives

You will learn:

• how to use single and multiple horizon operations including bias, scaleexponentiation, differentiation and dip/azimuth.

• the use of Areal Functions in interpretation including creating aisochron/isopach map, resnapping, smoothing, or extracting amplitude fa horizon, making a copy of a horizon or fault, bulk shifting interpretatioand editing amplitudes and z values

• how to create rectangular/polygonal paths on Basemap for areal and ASoperations


Areal Operations Schlumberger


Schlumberger Areal Operations

ry

ExerciseExercise

Areal Operations

Peak/Trough

1. In theBasemapmain window, verify that yourReadout Display hasCDP andLine in its display fields. If it does not, add them usingUser > Readouts.

2. In theBasemap main window, chooseEdit > Seismic Areal Path >Rectangular, then clickMB1 at the intersection ofCDP 360(north-south) andLine 500 (east-west), and the intersection ofCDP530 and Line 675 todefine arectangular seismic areal path.

• • • • • •

NOTE: Alternatively, clickMB1 at the intersection of aCDPand aLine, releaseMB1 anddrag the cursor to the diagonally opposite intersection of a differentCDPandLine,then clickMB1 to complete the rectangular areal path.

3. Click MB3 > Save to open theSave current path dialog box.

4. In theSave current path dialog box, typeAreal_Rec_Pathin the Enter nametext field and clickOK to save the path.

5. In theSeis%DV main window, select Inline640 and post horizonHOUSTON_ASAP in the seismic section. This is our reference horizon.

6. In theSeis%DV main window, zoom in starting at approximatelyCDP 500 tothe end of the seismic line atCDP 575. This should include the horizon posted.

• • • • • •

NOTE: The primary event will be the trough at about 2000 milliseconds. The secondaevent will be the peak directly below at about 2020 milliseconds.

7. Flatten on theHOUSTON_ASAP posted in the seismic window (Tools >Flattening).



hat

8. Set theSeis%DV main window annotation to showTime Labeling every 10milliseconds (Define > Annotation).

• • • • • •

NOTE: While not entirely necessary, the purpose of flattening is to make the task ofdetermining the search windows easier in difficult data areas. You will notice tthe trough is between 50-80 milliseconds below the reference horizon and thesecondary event peak is 0-30 milliseconds below the primary event trough.

9. In theSeis%DV main window, chooseAreal > Peak/Trough to open theArealPeak/Trough Computation dialog box.

10. In theAreal Peak/Trough Computations dialog box Select theHOUSTON_ASAP horizon and the 8mig seismic class. Next, toggleInsideRectangular Pathon (red) and click3D Survey/Pathto open thePath selectiondialog box.

11. In thePath selection dialog box, highlightAreal_Rec_Path and clickOK .

12. Click on theParameters tab and setPrimary Event to Trough and in theProperties area, toggleLargest on (red). Set thePrimary Search window toStart (ms) 60 andEnd (ms) 80.

• • • • • •

NOTE: Negative numbers will search above the reference horizon.

13. Set theSecondary Event to aPeak and in theProperties area, toggleCloseston.

14. Set theSecondary search window over the peak event that occurs atapproximately 2020 ms.Start (ms) 0 andEnd (ms) 30.

• • • • • •

NOTE: Be sure to begin counting theSecondary search windowgate from the primary eventequal to0 ms (zero).

15. Toggle all of the compute options (Delta Z, Delta amplitude andAmplituderatio ) on (red).



the

16. ToggleAutosaveon (dimmed), and typeHOUSTON_ASAP_orig in the Autosave name text field.

17. ClickOperate to begin andYes to theConfirmation box.

18. ClickClose.

19. In theSeis%DV main window choosePost > Interpretation. Post theprimary_pt andsecondary_pt horizons.

20. ChooseTools > Flattening-Off to turn off the flattening tool in the seismicwindow.



23. In thePost Seismic Horizons dialog box, select theHOUSTON_ASAP horizonfrom theAvailable list and select theTrough_Peak_Delta_Amplitudeattribute.

24. In theBasemap main window, chooseUser > Colormap to open theColormapmanagement dialog box and select theOpacity_1 colormap.

25. Create aBorehole set to include theFluorite-A7 andGypsum-A6 boreholes.Create aBorehole appearance in the seismic window to include log curves (SPandILD ) and markers (HOUSTON_BASE).

26. Post the boreholes in theSeis%DV main window and theBasemap mainwindow. Also post theHOUSTON_BASE markers inBaseMap (Post >Interpretation > Markers ).

27. Select crossline394 on the base map.

28. Observe any possible anomalies and updip potential on the Basemap and inseismic window.

Isochron/Isopach maps

1. In theSeis%DV main window, chooseAreal > Isochron/Isopach mapto opentheAreal Isochron/isopach mapdialog box.



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2. In theAreal Isochron/Isopach Mapdialog box, toggleInside RectangularPath on (red).

3. Choose theAreal_Path saved earlier by clicking on the3D Survey/Path buttonand selecting the path.

4. Click on theParameters tab and toggle both compute options (Delta Z, DeltaAmplitude ) on (red).

5. SelectHOUSTON_ASAPas Reference Horizon as andKOBE_ASAP asOther Horizon.

• • • • • •

NOTE: The reference horizon must be shallower than the other horizon for the values tpositive.

6. Select the class as8mig. Click Operate. When computation is complete, closethe window.

7. In Basemap, choosePost > Interpretation to open theInterpretation dialogbox.

8. In theInterpretation dialog box, clickHorizons to open thePost SeismicHorizons dialog and post horizonHOUSTON_ASAP. Select theVertical TimeThicknessattribute.

9. Click OK .

Copy horizon over the entire survey

1. In theSeis%DV main window, chooseAreal > Horizon copy to open theArealHorizon Copy dialog box.

2. In theAreal horizon copydialog box, clickEntire 3D Surveyon (red).

3. Click the 3D Survey/Path button and choose the survey andOK .

4. TurnAuto Saveoff.

5. Click on theParameters tab and set theCopy/ Merge options toCopy contactsand Copy fault boundaries.Make sure theOperation is set toCopy.



6. SelectKOBE_ASAP horizon from theInput Horizon list and type inKOBE_SNAP in theHorizon text field under theOutput Horizon list.

7. Click Operate. When finished, clickOK to return to the information window.

8. Repeat the horizon copy for theKOBE_ASAP horizon and name the outputhorizonKOBE_SMOOTH . TurnAuto Saveoff (dimmed).

9. Click on theParameters tab and set theCopy/ Merge options toCopy contactsand Copy fault boundaries.Make sure theOperation is set toCopy. Whenfinished,Close theAreal horizon copy dialog box.

Amplitude Extraction

1. In theSeis%DV main window, chooseAreal > Amplitude extraction to opentheAreal Amplitude Extraction dialog box.

2. In theArea of Operation, click Entire 3D surveyon (red).

3. Highlight theKOBE_ASAP horizon in theSelect horizon window.

4. Turn ONAuto Save. Leave the Auto Save name window blank.

5. Highlight the8mig seismic class.

6. Click Operateand Yesto theConfirmation dialog box. When finished, clickOK . Close the window.

7. Post theKOBE_ASAP horizonAcoustic_Amplitude & 8mig attribute on thebasemap. (Post > Interpretation > Horizons) Notice in the horizon list windowthat the originalKOBE_ASAP horizon has an underscore behind its name.

Snap

1. In theSeis%DV main window, post theKOBE_SNAP horizon. ChooseAreal >Snap from the menu.

2. Highlight theKOBE_SNAP horizon in theAreal Snapdialog box.

3. Highlight the8mig seismic class.

4. ForArea of Operation, useEntire 3D survey.



5. Click on theParameters tab and choose theSnap all option in theSnapOptions area. ToggleExtract to Yes(red). Select the8mig class. ToggleAutoSaveoff (dimmed).

6. Take all other default settings. ClickOperateand Yes to theConfirmation box.

7. When completed, clickOK andClose theAreal Snap window.

8. In theSeis%DV main window chooseDefine > Horizonto open theHorizonManagement dialog box.

9. In theHorizon Management dialog box, change the horizon color of theKOBE_SNAP horizon to orange (11).

10. ClickUpdate andClose.

Smooth

1. Post theKOBE_SMOOTH horizon in theSeis%DV main window.

2. In theSeis%DV main window, selectAreal > Smooth.

3. ToggleEntire 3D surveyon (red).

4. Highlight theKOBE_SMOOTH horizon in theHorizon(s) list.

5. Click on the Parameters tab and select either theCosine or Hanning Smoothingtaper.

6. ToggleAuto Saveoff (dimmed).

7. SetInline CDPs Equal Weighting = 8, Inline CDPs Taper Weighting= 12,Crossline Equal Weighting= 8, Crossline Tapered Weighting= 12, andTimediff (in ms) = 15 ms.

8. Click Operate andYes to theConfirmation dialog box. When completed, closetheAreal smoothwindow and change the horizon color ofKOBE_SMOOTH toyellow (9).



9. In theSeis%DV main window, chooseDisplay > Redisplay and observedifferences between theKOBE_SMOOTH andKOBE_SNAP horizons.Makesure both horizons are posted.




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Chapter 7Automated Picking Techniques

• • • • • •

OverviewOverview

There are several reasons to use automatic seismic picking. Some interpreterinterpret only every second or third line and interpolate between those lines; otmay interpret every seismic line if the volume of seismic data is not very largeAutomatic picking tools can help facilitate speed and accuracy in the interpretaof geological and geophysical data.

Learning Objectives

This chapter reviews each picking tool so the interpreter can decide which to with their data.

• When you have finished you will learned how to use the automatic pickASAP and AutoPix on your interpreted horizons.

• Additionally, you will learn how to use Horizon functions to create anddelete interpretation with different origins.

• Finally, Surface Slice will be used to pick horizontally on multiple timeslices guided by the interpreter.


Automated Picking Techniques Schlumberger


Schlumberger Automated Picking Techniques

ExerciseExercise

Automated Picking Techniques

Automatic Seismic Area Picker (ASAP)



3. In thePost Seismic Horizons dialog box, click to highlight and select theCARACAS_INTERP horizon from theAvailable list of horizons.

4. Select theTime attribute.

5. Click OK to post the horizon on the basemap.

6. In theBasemapmain window, chooseTools > ASAPto open theASAP pickingdialog box.

7. Click Seismic in theASAP Picking window to open theASAP SeismicDefinition dialog box.

8. Click theClass down arrow and select8mig.

9. In theVolume Type area of theASAP Seismic Definition dialog box, toggleDatabase Volumeon (red).

10. ClickOK .

11. In theASAP picking dialog box, clickInterpretation to open theASAPInterpretation Definition dialog box.

12. In theASAP Interpretation Definition dialog box, select the desired horizonfrom theHorizons list.



13. In theSeed Pointsarea, toggleSeismic interpretationandUnknown on (red) intheSeeds column.

14. In theOverwrite column, toggle all parametersoff (dimmed).

15. ClickOK .

16. In theASAP picking dialog box, clickTracking to open theASAP TrackingParameters dialog box.

17. In theASAP Tracking Parameters dialog box, click theSelect Horizon downarrow and select the desired horizon.

18. SetTracking Options to the most stringent values by choosingAdvancedTechnique, Interpolated Resolution andAmplitude .

19. Accept default values for the remaining parameters.

20. ClickOK .

21. In theASAP picking dialog box, togglePolygonon (red) to use a polygon todelineate an area on the basemap for automatic picking.

22. ClickMB1 successively to create the polygon, then clickMB3 > Break tocomplete the polygon.

Delete ASAP

1. In theBasemap main window, chooseTools > Horizon Functionsto open theHorizon Functions dialog box.

2. In theHorizon Functions dialog box, selectAttribute Erase for Mode.

3. In theOrigin area, toggleAutopicked on (red) and turn all otherOriginparametersoff (dimmed).

4. In theActive Survey area select thecloudspin_survey 3D survey.

5. UseLine, Paintbrush, Polygonor Fault Boundary Polygon to remove only theautopicked horizon data.

Interpolation of horizons

1. In theHorizon Functions dialog box, selectAttribute interpolation for Modeto fill in uninterpreted areas.


Schlumberger Automated Picking Techniques

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2. In theSelection Methodarea, togglePolygonon (red) to delineate an area on thebasemap to interpolate.

3. Click Interpolation Parameters to open theHorizon InterpolationParameters dialog box.

4. Set thePrimary search direction to Along Inline Direction .

5. Set theSearch Tolerance Units to In CDP/ILN Units .

6. Set theTolerance Values for Tolerance In CDPsandTolerance In ILNs tolarge enough values to interpolate the horizon.

7. Move the cursor to the basemap and clickMB1 on successive points to draw apolygon around the area to interpolate.

8. Click MB3 > Break to complete the polygon.

Use Polygon mode to erase parts of horizon.

1. In theHorizon Functions dialog box, selectAttribute Erase for Mode

2. In theOrigin area, toggleBasemap Interpolatedon (red) and turn all otherOrigin parametersoff (dimmed).

3. In theSelection Methodarea, togglePolygonon (red) to delineate an area on thebasemap from which parts of the horizon will be removed.

4. Move the cursor to the basemap and clickMB1 on successive points to draw apolygon around the area from which parts of the horizon will be removed.

5. Click MB3 > Break to complete the polygon and remove the interpolated area

6. Click MB3 > Restore to restore the interpolated area.

Use paintbrush to partially erase interpretation.

1. In theBasemap main window, chooseTools > Horizon Functions, or clickMB3 > Control to open theHorizon Functions dialog box.

2. In theSelection Method area of theHorizon Functions dialog box, togglePaintbrush on (red).

3. Move the cursor to the basemap and clickMB1.



4. Move the cursor over the parts of the displayed horizon you wish to remove.

5. Click MB1 again to stop erasing.

6. Click MB3 > Restore to restore the restore the erased area.

7. To change the size of the paintbrush, clickDefine paintbrush and then clickMB1 and drag to define the two corners of the paintbrush rectangle.


Schlumberger AutoPix

ExerciseExercise

AutoPix

1. In theIESX Session Managerwindow, chooseApplication > AutomaticPicking > AutoPix to open theAutoPix dialog box.

2. Use the horizonHOUSTON_ INTERP to practice runningAutoPix. Post theHOUSTON_ INTERP horizon in bothBasemap andSeismic windows.

3. SelectDefine > Dataset from theAutoPix dialog box and selectcloudspin_survey and class8mig of seismic data.

4. Click OK .

5. ChooseDefine > Interpretation and selectHOUSTON_ INTERP. Save theattributes.

6. Click OK .

7. Select Define > Areaand select the rectangular path created in a previousexercise as the inclusion path for the entire survey. Click onAdd. Then clickOKto close the dialog box.

8. SelectDefine > Pickingand set thePicking method to Correlation picking , theQuality factor to 0.7, the Max. trace dip to 8ms and set theStarting linenumber to match an in-line for which interpretation exists. ClickUpdate andthenOK .

9. SelectUser > Update and set the Line frequency to 2.


AutoPix Schlumberger

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10. ClickStart in theAuto Picker window.

• • • • • •

TIP: Use the correlation picking method. Set the seismic to display every two lines. Use thStop/Restart buttons if you need to change any of the interpretation and use thePause/Continue buttons if you need to change any display parameters inSeis3DV orBasemap.

11. Erase these autopicks and begin again. (Tools > Horizon operations).

Use HOUSTON_INTERP to run Autopix with the Event picking method.

1. Keep theAmplitude andWavelength Factors at the default settings. Keep allother parameters the same as above.

2. In theAutoPix dialog box, chooseDefine > Picking to open theAutopixparameters dialog box and toggleEvent picking on (red).

3. Click OK

4. In theBasemap main window, chooseEdit > Seismic Areal Path >Rectangularand useMB1 to draw a small rectangle for use as an exclusion pain the area definition. ClickMB3 > Saveto save the polygon for later use.

5. In theAutoPix dialog box, chooseDefine > Area and choose the inclusion pathfor the entire survey, and the exclusion path you just made.AutoPix will excludethe second zone.

6. In theAutoPix dialog box, clickStart.

• • • • • •

TIP: Use the correlation picking method. Set the seismic to display every two lines. Use thStop/Restart buttons if you need to change any of the interpretation and use thePause/Continue buttons if you need to change any display parameters inSeis3DV orBasemap.

7. When completed, chooseFile > Exit in theAutoPix dialog box.


Schlumberger AutoPix

8. In theBasemap main window, chooseTools > Horizon operations to erase theseAutopicks.


SurfaceSlice Schlumberger

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ExerciseExercise

SurfaceSlice

View Current Surface Slice Information

1. ChooseApplication > DataManager in theIESX Session Managerwindow.

2. SelectSurfaceSlice from theSeismic column.

3. Click MB1 on the appropriate 3D survey and seismic class to see the currensurface slice information. Note the time range for which surface slices exist.

4. Close.

Set Up Surface Slice Display

1. SelectSurfaceSlice from theIESX Session Manager (Surface Slice >3DV/2DV).

2. SelectDefine > Surface Slice. Set the surface slice display parameters to a 3sample (12 ms) thick time surface slice showing the peak event. Set theNo eventcolor to white and theOverlap color to black. Set theLayout to 1 (one)Acrossand1 (one)Down and theIncrement to 0.

3. Click OK .

4. SelectPost > Interpretation to receive thePost Interpretation pop-up menu.

5. SelectHOUSTON_ INTERP from the list.

6. Selectall the faultsfrom the list of faults and set the fault label to none.

7. Click OK .

8. Display8mig seismic data onInline 640 (Display > Seismic).

9. Use one of the horizontal fold out icons to display an inline/surface slice foldintersecting theHOUSTON_ INTERP horizon.


Schlumberger SurfaceSlice

10. Choose a color scheme. Click the color bar withMB1.

11. Post theHOUSTON_ INTERP horizon inBasemap and set the ITC Filter inBasemap andSurfaceSlice to Send andReceive Active interpretation.

Interpret using surface slice

1. Click MB3 and selectStream mode.

2. Click MB3 and selectControl to receive theSurfaceSlice control panel.

3. Change theStyle to Multiple contour and click onClose.

4. Make theHOUSTON_ INTERP horizon the active horizon.

5. Zoom in and begin interpreting. Notice interpretation in basemap window.Remember to MB3 > Break once

Erase Interpretation

1. SelectMB3 > Control to open theSurfaceSlice control panel.

2. Change the style toPolygon inclusive.

3. Click MB3 > Erase.

4. UsingMB1, draw a polygon around any horizon interpretation and clickMB3 >Break. (This selects the interpretation to be erased.)

5. Click MB3 > Break again to perform the erase.

6. Click MB3 > Interpret to go back to interpret mode.

Create Barriers

1. Change the interpretationStyle to Paint.

2. Set Overwrite interpretation to No.

3. Make a barrier across an event by clickingMB1 and dragging the paint brush.Click MB3 > Break to end.

4. Re-interpret this slice either by usingSingle Contour or Multiple Contour aftermaking the barrier.


SurfaceSlice Schlumberger

5. Reset theOverwrite interpretation to Yes.

Open Interpretation

1. Continue interpreting usingMultiple Contour , Stream Mode. Notice theinterpretation posting on the basemap.

2. Make a few traverses and look at the interpretation made usingSurfaceSlice.

3. When complete, chooseFile > Exit to close theSurfaceSlice application.


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Chapter 8Basemap Plus

• • • • • •

OverviewLearning Objectives

This chapter contains exercises for theIESX interactive mapping and griddingapplication calledBasemap Plus. Basemap Plus creates grids, contour sets, andscatter sets for posting on theBasemapcanvas or for use in other applications, sucasCPS-3. After the lecture and these exercises you should:

• understand what is required to use Basemap Plus and what it will grid

• how to use gridding constraints such as fault polygons and other bounda

• know how to setup and use the different gridding algorithms available iBasemap Plus

• how to reset the parameters, regrid and save grids, contours, and scatte

• How to edit grids, contours, and scatter set produced by Basemap Plu

• be able to understand what single (Unary) amd multiple grid operationssaved grids are available..


Basemap Plus Schlumberger


Schlumberger Basemap Plus Gridding

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ExerciseExercise

Basemap Plus Gridding

Post HOUSTON_INTERP horizon and Fault Boundary set



3. In thePost Seismic Horizons dialog box, selectHOUSTON_INTERP horizonandTime for Attribute .

4. Click OK .

5. In theInterpretation dialog box, clickFault Boundaries to open thePost FaultBoundariesdialog box.

6. In thePost Fault Boundariesdialog box, click to highlight theHOUSTON_INTERP horizon andall the faults.

7. Click OK .

8. In theInterpretation dialog box clickOK .

Grid HOUSTON_INTERP horizon interpretation and use the faultboundaries as modeling constraints.

The following will take you through all three types of gridding available in Basem

1. In theBasemapmain window, chooseGridding > Structural Gridding to opentheBasemap Plus Structural Gridding and Contouringdialog box.

2. In this dialog box, selectSeismic horizons from theSurface Types toggles.

3. SelectHOUSTON_INTERP from theSurface list.


Basemap Plus Gridding Schlumberger

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4. Select theFault Boundaries button under theConstraints tab and then choosethe horizon and faults for the fault boundaries you want to use to constrain thgridding.

5. Click OK .

6. Under theParameters tabof theBasemap Plus StructuralGridding andContouring dialog box, make sure Generate Grid and Generate Contours are

7. Click on theGrid and Contour Parameters button and set the followingparameters:

Grid Geometry - User Defined

Grid Spacing - Fine

Toggle thePreview Grid Geometry on to see the proposed grid.

Grid Z Limits - Clip Outside

Grid Options- Algorithm (Convergent)), Grid Coverage High, DecimaData off, Grid smoothing Low. ClickOK .

8. Make sure theAuto Display is toggled on.

9. Accept all other parameter default values.

10. ClickOK to begin gridding.

11. In theBasemap main window, observe the contours and grid coverage.

Save the grid.

1. ChooseGridding > Save as to open theSurface Savedialog box.

2. In theSurface Savedialog box, type aName andDescription for the grid fileand aContour Set Name andContour Set Description for the contour file.

3. Toggleon (red)Save Scatterand name the scatter set.

4. Ensure thatPost grid/contour in Post Interp.is toggledon (red).

5. Click OK .



n
Project Gridding You are not required any longer to post what you want to grid. In additioyou may use multiple Date types as long as they are in the same domain.
1. In theBasemap main window, click theInvoke grid and contouring icon orchooseGridding > Project Gridding to open theBasemap Plus Gridding andContouring dialog box.

2. Click on theHorizon button and choose theHOUSTON_INTERP and itsTimeattribute.

3. Click on theMarkers button and choose theHOUSTON marker from theAvailable list on theSurface tab. It should move to the Selected list. click OK.

4. Click on theGrid and Contour Parameters button and set the followingparameters:

Grid Geometry -User Defined

Grid Spacing -Fine

Toggle thePreview Grid Geometry on to see the proposed grid.

Grid Z Limits -Clip Outside

Grid Options-Algorithm (Convergent)), Grid Coverage -High, Decimate Data- Off, Grid smoothing -Low

5. Accept all other parameter default values.

6. Click OK and OK to begin gridding.

7. In theBasemap main window, observe the contours and grid coverage.

Save the grid.

1. ChooseGridding > Save as to open theSurface Savedialog box.

2. In theSurface Savedialog box, type aName andDescription for the grid fileand aContour Set Name andContour Set Description for the contour file.

3. Toggleon (red)Save Scatterand name the scatter set.

4. Ensure thatgrid/contour in last Interp. is toggledon (red).



5. Click OK .

Grid and contour the KOBE_ASAP horizon



3. In thePost Seismic Horizons dialog box, selectKOBE_ASAP horizon andTime for Attribute .

4. Click OK .

5. In theInterpretation dialog box, toggleGrids andContours off (dimmed)

6. Click OK to close theInterpretation dialog box.

7. In theBasemap main window, chooseEdit > Boundaries > Inclusive Data.

8. On the basemap, click successive points with MB1 to create an inclusive area ontheKOBE_ASAP horizon.

9. Click MB3 > Save to open theSave Inclusive Data Boundary dialog box.

10. In theSave Inclusive Data Boundarydialog box, type aNameandDescription,then clickOK to save the newly created inclusive area.

11. ClickGridding > Project Data to open theBasemap Plus Input Data dialogbox.

12. In theInput Data area, select theUse posted data button.

13. Select theFault Boundaries and choose all the fault boundaries for theKOBE_ASAP horizon and all faults. Select theInclusive Data Boundariesbutton and choose theInclusive Data Boundary you created.

14. Leave theParameters at their defaults.

15. Leave theOutput options at their defaults.

16. ClickOK .



Save the KOBE_ASAP grid and deselect posted data

1. In theBasemap main window, chooseGridding > Save as to open theSurfaceSavedialog box.

2. ToggleSave Scatteron (red).

3. In theSurface Save As dialog box, type a name for theGrid file, Contour Setfile, andScatter Set file.

4. Click OK .


6. In theInterpretation dialog box, toggleHorizons off (dimmed).

7. Click OK .

Iso Gridding

1. In theBasemap main window, chooseGridding > Iso Gridding . TheBasemapPlus Iso Gridding and Contouring dialog is display.

2. On theUpper Surface tab choose theCARACAS_ASAP horizon

3. On theLower Surface tab choose theHOUSTON_ASAP horizon

4. Do not use anyConstraints. Leave theParameters andOutputs tabs at theirdefaults.

5. Click OK

Differentiate a saved grid to show anomalous areas indicated by dipchanges.

1. In theBasemap main window, chooseGridding > Grid Operations > Single toopen the Basemap Plus Single Grid Operationsdialog box.

2. In theBasemap Plus Single Grid Operationsdialog box, select the savedKOBE_ASAP surface from theAvailable Surfaces list and the savedKOBE_ASAP_time grid from theAvailable Grids list.

3. ToggleDifferentiate on (red) and selectdz/dxdy for Differentiation Type.



les

4. Click OK .

5. SelectGridding > Clear Temporary Model to clear the basemap.

Post grid (contours) onto Basemap

1. In theBasemapmain window, selectPost > Interpretation to open theInterpretation dialog box.

2. In theInterpretation dialog box, clickContours to open thePost Surface Datadialog box.

3. In thePost Surface Data dialog box, click theHOUSTON_INTERP surface intheAvailable Data list and display a list of folders.

4. From the list of folders, click to openContour_Set folder and click to select thesaved contour file and move it to theSelected Data list in theContents folder.

5. Click to highlight and select, then click the scissor icon to deselect any other filisted in theSelected Data list.

6. In thePost Surface Data dialog box, click to open theContour Appearancefolder.

7. In theContour Appearance folder, toggleIndex Contours on (red), leave theIndex Increment set to5, and choose a thickWidth .

8. ToggleContour annotation on (red), set theUser Color to 30 (blue) and choosea largeText Size.

9. Click OK .

10. ClickCancel to close theInterpretation dialog box.


Schlumberger Editing in Basemap Plus

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ExerciseExercise

Editing in Basemap Plus

Using the Model Editor

1. In theBasemap main window, zoom in on an area of the contouredHOUSTON_INTERP horizon.

2. ChooseGridding > Surface Model Editor to open theContour Editor dialogbox. All contours in the zoomed map will be highlighted with blue nodesindicating the contours are active.

3. Zoom in once again so that individual nodes can be seen on the lines.

4. In theContour Editor dialog box, toggleClear Posted Contourson (red).

5. Place the cursor over the line to be edited and clickMB1 to make the contourline and nodes active (the selected contour line will highlight in yellow).

• • • • • •

NOTE: The Contour Editor dialog box is inSelect mode by default. Contour editing isperformed with a combination of toggle selections in the dialog box and selectifrom the MB3 menu.

6. In theContour Editor toggleDelete Areaon (red) and observe that the activeline is now blue again.

7. Click successive points withMB1 to draw a polygon around the nodes of onecomplete contour you wish to delete. ClickMB3 > Break to close the polygonand select nodes.

8. Click MB3 > Delete.

9. In theContour Editor toggle onEnter.

10. ClickMB3 > Edit .


Editing in Basemap Plus Schlumberger

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11. On the basemap, click successive points withMB1 to draw a contour line. Whiledrawing, clickMB2 to delete a point. SelectMB3 > Break to complete drawing.

Smooth a contour line.

1. In theContour Editor dialog box, toggleSelecton (red), or clickMB3 > Select.

2. Click MB1 on a contour line to make it active.

3. Click MB3 > Smooth and observe what happens to the line.

Give a contour line a new Z value.

1. Place the cursor on the adjacent contour line on either side of the contour yocreated. TheZ value of the contour line will appear in the grayZ Tracking textfield of theContour Editor dialog box. When the cursor is not on a contour,<ABSENT VALUE > is displayed in the grayZ Tracking text field.

2. In theContour Editor dialog box, and with the new contour still active(highlighted in yellow), type in an appropriate contour value in theSet Z Valuetext field.

3. Click Set Z Value to set the new contour value. Place the cursor on the newcontour to see theZ value in theZ tracking text field.

4. Click Save to overwrite the current contour file, or clickSave As to open theSurface Save dialog box and create a new contour set name.

5. Click Close to end the editing session.

Create a color-filled contour grid surface


2. In theInterpretation dialog box, toggleHorizons off (dimmed), and toggleContours, Grids and Inclusive Data Boundarieson (red).

3. Click Contours to open thePost Surface Data dialog box and, in theContentsfolder, ensure that theHOUSTON_INTERP contour set is still selected.

4. In theAvailable Data list of theContentsfolder in thePost Surface Datadialogbox, click theHOUSTON_INTERP Grid folder icon to display a list of grids.


Schlumberger Editing in Basemap Plus

5. Select the grid saved earlier.

• • • • • •

NOTE: A Grid set and aContour set should now be listed for theHOUSTON_INTERPhorizon in theSelected Data list in theContents folder of thePost Surface Datadialog box.

6. In thePost Surface Data dialog box, click to open theGrid Appearance folderand, in theGrid Colorfill area, toggleColor-Filled Contours on (red). Also settheGrid Colorfill to Opaque.

7. Click to open theAssociated Data folder and toggleInclude Fault BoundariesandFill Boundaries on (red).

8. In theInclude Fault Boundaries area, changeColor to Fault_Color.

9. Click OK to close thePost Surface Data dialog box.

10. In theInterpretation dialog box, clickFault Boundaries to open thePost FaultBoundary Sets dialog box.

11. In theAvailable Data list of thePost Fault Boundary Sets dialog box, click toopen theHOUSTON_INTERP folder and select all faults. Click to open theAppearance folder and toggleFill Fault Polygonson (red).

12. SetAppearance to Fault.

13. ClickOK .

14. In theInterpretation dialog box, clickCancel to close it.

15. In theBasemap main window, chooseView > Unzoom to observe the effects ofchanging the grid colorfill and fault boundary appearances.


Editing in Basemap Plus Schlumberger


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Chapter 9GeoViz Explore

• • • • • •

OverviewOverview

GeoViz Explore enables you to display and view inlines, crosslines, and slices2D and 3D seismic data in a three dimensional cube, thereby offering an effecmeans of solving structural and stratigraphic problems.

GeoViz Explore is a view-only multi-user version ofGeoViz and is included as astandard part of the license forCharisma or IESX. GeoViz Explorecontains mostof the viewing functionality ofGeoViz; however, it does not contain any of theinterpretation or speciality tools. Interpretation tools aredimmed in the menus.

Learning Objectives

After the lecture and exercises you should be able to

• rotate and move the scene

• select and view seismic

• select, post, and view boreholes and log curves.

• display and view faults and horizons

• display and view surfaces and contours

• modify appearance of posted data including seismic, interpretation, andsurface lighting and coloring options.

• loading and displaying 3D voxel volumes.

• ability to pan through 3D seismic volumes with respect to the 3 coordinaxis.

• have a basic understanding of the other GeoViz tools

• inter task communication with other GeoFrame applications (e.g IESXStratLog, WellPix, CPS-3.


GeoViz Explore Schlumberger


Schlumberger GeoViz Explore

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ExerciseExercise

GeoViz Explore

Select, Post and View Seismic in the 3D cube.

1. From theSession Manager click onApplication > GeoViz Explore to launchthe program. When theAuxiliary Display dialog box displays, click on theLaunch GeoViz button.

2. If you wantGeoViz to display on the other screen, turn on theAll Dialogs onAuxiliary Display selection and type in the display number (:0.0 for the primascreen or:0.1 for the secondary screen.

• • • • • •

NOTE: This other screen must have a graphics card capable of supporting GeoVgraphics.

3. Click onDisplay > Seismic from the main menu.

4. Highlight thecloudspin_survey and8mig class.

5. Toggle ONInline and select an inline. Click onApply to post selection.

6. Highlight2d_slb and2dmig class from theSurvey andClass panels.

7. Toggle ON2D line and select line slb8 from theAvailable list and click onOK .

View Seismic

1. Click View > Seismic from the main menu.

2. Set theGain to 150, toggle ONModify Colors and clickOK .

3. From theModify Spectrum pop-up menu select a spectrum color and clickOK .



Question: What was the effect on the posted seismic lines?

Answer:

Post a seismic time slice

1. SelectDisplay > Seismic.

2. Highlight thecloudspin_survey and8mig class.

3. Toggle ON Slice and selectS_2460. Type in S_2460 in theSearch window andclick MB1 on the highlighted slice in theAvailable list window to move slice totheSelected list.

4. Click onOK to post and close window.

5. What is the color spectrum of the slice?

6. Use theMB1, MB2 andMB3 functions to move the cube image.

Modify posted data objects

1. Click on theModify button at the bottom left of the GeoViz Explore window.

2. Click on the wordSeismicin theModify Objects dialog box. Click the folder onthe left of Seismic to expand and display all seismic objects posted.

3. Selectslb8 by deselecting the other choices with MB1 and click onModify .From theView Seismic pop-up window toggle ONModify Colors and set theGain to 150.

4. Click onOK . Selectpurpbluwhtred spectrum and click onOK .

5. What happened to line 2d_slb?

6. Select the other seismic objects and modify the color. Click onClose.

7. SelectFile > New to reset the 3D cube.



Select, Post and View Boreholes

1. Click Display > Wells > Boreholes.Turn on theActual radio button.

2. Choose theAgate-H6, Barite-C1, Citrine-1 andDiamond-14 boreholes byhighlighting the boreholes in theAvailable list. Click onOK to post.

3. Zoom in usingMB1, translate usingMB3 and rotate the scene usingMB2.

Post Logs

1. SelectDisplay > Wells > Logs

2. Select all boreholes by clicking onAll .

3. In the2D Left Curve panel select anSP log. Click onList and scroll down to SP- Spontaneous Potential, then clickOK .

4. In the2D Right Curve panel, typeILD in the text field and press <Return.Toggle OFFFill Color and change the color. Set theLog Scale slider bar to75.Click onApply to post log curves.

5. Click on the3D Display tab and choose theDT curve from theLog DiameterandLog Color lists and clickApply. Change theSample Rate to 50. Click onOK to post the 3D log curve. Does it have any effect on the display speed?

Post Markers

1. SelectDisplay > Wells > Markers

2. Choose all the available markers by clicking on the all icon. Click onOK to post.

View Boreholes and Markers

1. SelectView > Wells from the menu.

2. Change the marker size to35, and change theborehole color to green andborehole label to position and type in1500 ms. Click onOK .

3. Move around the 3D cube using the icons on the icon bar and mouse buttonfunctions.

Post and View Faults and Surfaces

1. SelectDisplay > Grids from the menu.



2. SelectPARIS_ASAP from theAvailable list.

3. Choose theGrids Computed by button and set it toFaults and select theH_gfault. Click onOK .

4. Hide the map by clicking on themask icon and highlightingMap. Click onOK .

Modify Surfaces

1. Click Modify and click the small folder next toGrids. Select PARIS_ASAPandclick Modify.

2. Change Coloring toGrid . Toggle ONModify Colors andModify Grid . ClickOK . In the PARIS_ASAP window, select PARIS_ASAP: Acoustic_Amplitude.

3. In theModify Spectrum dialog box, selectbluwhtyelred spectrum and clickOK .

4. Click Close to close theModify Objects dialog box.

5. SelectFile > New to clear the scene.

6. SelectDisplay > Horizon and selectParis _ASAPhorizon. ClickOK to post thehorizon.

7. Click on the Modify button. Select the folder in front ofHorizon/Fault in theModify Objects window. Select the PARIS_ASAP horizon and click on theModify button.

8. Change coloring toRibbon and toggle ONModify Colors andChangeAttributes . Click Apply.

9. SelectAcoustic_Amplitude from the pop-up window clickOK.

10. In theModify spectrum window, clickrainbow and thenOK . (Observe that theextracted amplitudes for the PARIS_ASAP horizon are posted).

Remove Tool

1. SelectTools > Remove or click on theRemove icon to open dialog box.

2. UseShift+MB1 while pointing cursor at the PARIS_ASAP horizon. Whenselected, the horizon appears in theRemove Tool window. Click onApply toremove the selected horizon.



3. Click Cancel to close theRemove Tool window.

4. Close theModify Objects window.

5. Clear the scene usingFile > New.

Modify posted Fault and Horizon

1. Post horizonHOUSTON_INTERP and faultD_i and inline633.

2. Click onModify .

3. Highlight Horizon/Fault. In theModify Horizon/Faults window set Coloring toribbon , toggle ONModify Colors and Change Attribute and click onOK .

4. From the pop up horizon attribute window selectTime and click onOK .

5. From the pop upModify Spectrum window select bluwhtyelred spectrum andclick onOK .

6. Click Close in theModify Objects box. (Observe that the horizon and fault arecolored in time using the spectrum colors).

7. Modify the posted inline 633 using techniques described above.

8. CloseGeoViz Explore. SelectFile > Exit > OK.




Documents

GeoFrame Basic Seismic Interpretation Using IESX …read.pudn.com/downloads130/doc/556189/train/train/GF4_Basic_IESX...GF4_Basic_IESX_Interp_19Nov01 GeoFrame Basic Seismic Interpretation