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GeoCenter LP
Marine ProcessingSeisUP ®
SeisUP ®
University of Texas / Dallas
Offshore Oregon
Processed By: GeoCenter
for Training Session utilizing
SeisUP ®
Table of Contents
Slides Subject
4 Processing Flow
5-6 Processing Flow # 1 & 2
7 Raw Record Display
8-9 Near Trace Displays
10-11 Brute Velocity Analysis
12 QC Stack
13 Gain Analysis
14-15 A/C & Decon QC
16-17 Decon Velocity Analysis
18 Decon Stack
19 Radon QC
20-21 Radon Velocity Analysis
Slides Subject
22-23 Radon Stacks
24-25 Radon DMO Velocity Analysis
26 DMO Stack
27 KTMIG Stack
28 DMO Angle Gather QC
29-31 AVO Cross Plots
32-33 Angle Stacks
34-36 Aperture Model QC
37 SMIG Stack
38 Closing
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Processing Flow
Reformat to GCI format
Geometry
Near trace extraction
Spherical divergence correction
Surface consistent gain correction
Spike edit
Deconvolution
Velocity analysis
Stack
Radon
Dip moveout correction
Velocity analysis
Stack
KTMIG
AVO Processing
Angle Stack QC
Angle Stacks (15 & 30 degrees)
AVO Crossplots
AVO (intercept & gradient) Stack
Additional QC
Radon Test
Apperture Modeling Test
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Processing Flow (1)
Page 5 / 38
University of Texas / Dallas
Offshore Oregon
Processing Flow (1)
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Processing Flow (2)
Page 6 / 38
University of Texas / Dallas
Offshore Oregon
Processing Flow (2)
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Raw Record Display
Page 7 / 38
Raw Record Display
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Near Trace (all shots)
Page 8 / 38
Near offset display
All Shots
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Near Trace (every 3rd Shot)Near offset display
Edit: every 3 rd shot
Page 9 / 38
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Brute Velocity Analysis
Page 10 / 38
Brute Velocity Analysis
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Brute Velocity Analysis
Page 11 / 38
Brute Velocity Analysis
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Brute Stack Alternate Trace Display
(zoomed zone of interest)
Page 12 / 38
SPER + NMO + STACK + AGC
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Gain Analysis
Page 13 / 38
Surface Consistent Amplitude Analysis
SGN1 +SGN2
Before After
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Auto Correlation Analysis
Page 14 / 38
Auto Correlation Analysis
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Decon A/C AnalysisSpiking Deconvolution
Operator= 160 msec
Auto Correlation Analysis
Page 15 / 38
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Decon Velocity Analysis
Page 16 / 38
Decon Velocity Analysis
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Decon Velocity Analysis
Decon Velocity Analysis
Page 17 / 38
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Decon Stack
Page 18 / 38
SPER +SGN3 + DECON + NMO + STACK + AGC
Alternate Trace Display
(zoomed zone of interest)
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Radon QC
Page 19 / 38
Before
Radon QC
After Removed
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Radon Velocity Analysis
Decon + Radon Velocity Analysis
Page 20 / 38
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Radon Velocity Analysis
Decon + Radon Velocity Analysis
Page 21 / 38
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Radon Stack
SPER +SGN3 + DECON + RADON (TP)+NMO + STACK + AGC
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Alternate Trace Display
(zoomed zone of interest)
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Radon Stack
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SPER +SGN3 + DECON + RADON + NMO + STACK + AGC
Alternate Trace Display
(zoomed zone of interest)
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DMO Velocity Analysis
Decon + Radon + DMO Velocity Analysis
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DMO Velocity Analysis
Page 25 / 38
Decon + Radon + DMO Velocity Analysis
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DMO Stack
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Decon + Radon + DMO + Filter+ AGC
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KTMIG Stack
Decon + Radon + DMO +KTMIG + Filter+ AGC
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Angle Gather QC
DMO Angle Gather QC (0-50/10 = 5 degrees)
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AVO Cross Stack
AVO Cross – P-wave Intercept and Gradient
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AVO Cross Plot
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AVO Cross Plot
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Angle Stack (0-15 degree)
Angle Stack 0-15 degrees
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Angle Stack (0-30 degree)
Angle Stack 15 - 30 degrees
Page 33 / 38
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Aperture Model QC
Aperture Model QC (one sided)
Design desired aperture =
Number of traces x TR. Interval x 2 (for full aperture)
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Designed Aperture Model QC
Aperture Model QC (one sided)
Aperture designed by controlling distance and time
varying dip.
Page 35 /38
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Designed Aperture Model QC
Aperture Model QC (one sided)
Aperture designed by time varying dip only.
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SMIG
Decon + Radon + DMO + SMIG + Filter+ AGC
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GeoCenter has made every effort to ensure the accuracy of the information herein. However, appropriate information sources should be consulted, especially for new or unfamiliar processing procedures. It is the responsibility of the processing geophysicist to evaluate and
conclude his/her own opinion to the context of the material presented.
It is forbidden to reproduce or to transmit in any form or by any means, electronic or mechanical , including photocopying any portion of this presentation without written permission from the University of
Texas/Dallas and GeoCenter.
SeisUP ®
SeisUP ®
GeoCenter LP4805 WestWay Park Blvd.
Houston, TX 77041281.443.8150
