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From the New York Times, Feb. 3, 2012 Mount Isa , Queensland, Austral Mount Isa , Queensland, Austral ld’s Largest Cu, Pb, Sn Mining Operatio d’s Largest Cu, Pb, Sn Mining Operatio Geology in the News

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Geology in the News. From the New York Times, Feb. 3, 2012. Mount Isa , Queensland, Australia World’s Largest Cu, Pb, Sn Mining Operation. Mount Isa. Mount Isa. Mount Isa , Queensland, Australia World’s Largest Cu, Pb, Sn Mining Operation. Mining Operation. - PowerPoint PPT Presentation

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Page 1: From the New York Times, Feb. 3, 2012

From the New York Times, Feb. 3, 2012

Mount Isa , Queensland, AustraliaMount Isa , Queensland, AustraliaWorld’s Largest Cu, Pb, Sn Mining Operation World’s Largest Cu, Pb, Sn Mining Operation

Geology in the News

Page 2: From the New York Times, Feb. 3, 2012

Mount Isa

Page 3: From the New York Times, Feb. 3, 2012

Mount Isa

Page 4: From the New York Times, Feb. 3, 2012

Mount Isa , Queensland, AustraliaWorld’s Largest Cu, Pb, Sn Mining Operation

Mining Operation

Toxic waste area

Page 5: From the New York Times, Feb. 3, 2012

Copper. Lead, silver miners in Pre-Cambrian shale and volcanic rock, 2 billion years old

Open Pit Mine

Page 6: From the New York Times, Feb. 3, 2012
Page 7: From the New York Times, Feb. 3, 2012

Northwest Offshore Australia Gas

Page 8: From the New York Times, Feb. 3, 2012

Barrow Island Anticline Oil Field

Page 9: From the New York Times, Feb. 3, 2012

Vagabond Venture Oil Group

SEARCH FOR FOSSILSEARCH FOR FOSSIL

FUELSFUELS

Winter 2012

Page 10: From the New York Times, Feb. 3, 2012

Week 1: Geology of Coal, Oil and GasWeek 1: Geology of Coal, Oil and Gas Week 2: Processes of Exploration Week 2: Processes of Exploration Week 3: Engineering Processes: Reservoir/ Week 3: Engineering Processes: Reservoir/

Drilling/Production Drilling/Production

The Course OutlineThe Course Outline

Week 4: ‘Vagabond Group’ chooses 2 prospectsWeek 4: ‘Vagabond Group’ chooses 2 prospects

Your chance to invest !Your chance to invest ! Week 5: ‘Vagabond Group’ drillsWeek 5: ‘Vagabond Group’ drills Week 6: the Payout?!Week 6: the Payout?!

The Basics:The Basics:

The Adventure:The Adventure:

A black-gold millionaire or dry hole hobo?A black-gold millionaire or dry hole hobo?

Page 11: From the New York Times, Feb. 3, 2012

By now, you should start to see that deciding-WHAT to drill

-WHERE to drill &- HOW to drill

is a TEAM EFFORTis a TEAM EFFORTComposed of

GEOLOGIST, GEOPHYSICIST,LANDMEN, & ENGINEERS

Today . . . .Today . . . .

Page 12: From the New York Times, Feb. 3, 2012

Petroleum EngineerPrimary Jobs:

Reservoir Characterization

Production & Enhancements

Well Design & Drilling

12

EconomicAnalysis

Cove

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Cove

red i

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SS N

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Cove

red

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Cove

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No.

6

Page 13: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Job #1Job #1

Reservoir CharacterizationReservoir Characterization

13

Page 14: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization“Reservoir characterization methodology:determining reservoir architecture, establishing fluid-flow trends, constructing reservoir model, and identifying reserve growth potential

Further investigations within reservoir type:integrating data: petrophysical, seismic, and geologic attributes 3-D geo-celluar model building; delineating flow units and fluid flow compartments, documenting reserve growth concepts under varying reservoir conditions”

Texas Bureau of Economic Geology

14

Page 15: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

From Seismic Data

15

Page 16: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Generalized Stratigraphic Map

16

Page 17: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

PETROPHYSICAL & PALEO DATA

17

LithologyWell core

Laboratory Analysis

Paleo Analysis

Page 18: From the New York Times, Feb. 3, 2012

1 millimeter

Gulf of Mexico Pliocene Sandstone

Petroleum Engineer: Reservoir Characterization

PETROPHYSICAL DATA

18

Laboratory Analysis Porosity – a measure of the open spaces within a rock that can contain oil or water. Unit of measurement is PERCENT

Permeability – a measure of the ability for fluid to flow thru a rock. Unit of measurement is DARCY

Point of Reference:

Concrete Block Brick Porosity

Permeability +/- 20% +/- 5 % 2 – 5 D .025 D (25 mD)

Page 19: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

PETROPHYSICAL DATA – Rules of Thumb

19

PERMEABILITYmD (milliDarcy) RESERVOIR QUALITY

1 – 10 mD Poor

10 – 100 mD Good

100 – 1000 mD Excellent

Porosity (%) RESERVOIR QUALITY

0 – 5% Insignificant

5 – 10% Poor

10 – 15% Fair

15 – 20% Good

20 – 25% Excellent

Page 20: From the New York Times, Feb. 3, 2012

Correlation of Well Logs(more on logging later…)

Petroleum Engineer: Reservoir Characterization20

Page 21: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Resulting in Reservoir Model

• Reservoir characteristics are input to a program that generates a 3D map of the subsurface reservoir

• The 3D map can then be used to assess where hydrocarbon has migrated to which then indicates where future wells should be drilled

21

Page 22: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

TYPICAL QUESTIONS TO ASK REGARDING TYPICAL QUESTIONS TO ASK REGARDING RESERVOIR CHARACTERIZATIONRESERVOIR CHARACTERIZATION

• What is the source rock? • What type of reservoir rock is expected? • What reservoir porosity is expected?• What reservoir permeability is expected?• What is the expected trapping mechanism?• What type of drive mechanism is expected?• Is the well type a straight hole or deviated?• What is the planned TD (total depth) of the well?• How many feet of pay is expected?• How do characteristics vary between in-field wells?• How many PROVEN reserves are expected to be found?

22

SPEAKING OF “RESERVES”…

Page 23: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Classification of Reserves is key!Classification of Reserves is key!What are Reserves?

The amount of oil & gas in a reservoir currently available for production

Why are they important?:Reserves when produced generate a cash flow and by

estimating the total cash flow from a well, the “expected value” of that well can be calculated. This sets the limit on much you can spend in developing

the well for any expected Return on Investment (ROI)!

23

Page 24: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Classification of Reserves is key!Classification of Reserves is key!

BUT…There are several different reserves names used:

• Reserves in Place Reserves in Place (physically contained in the reservoir; remember that only 25 to 30% of that can actually be recovered with conventional technologies; OOIP)

• Recoverable Reserves Recoverable Reserves (estimate of what can be produced from the reservoir)

• Proven Reserves, Developed or Undeveloped Proven Reserves, Developed or Undeveloped (reserves that can be calculated with reasonable certainty because the field has been defined by appraisal well(s) that have been tested)

• Proved Behind-Pipe Reserves Proved Behind-Pipe Reserves (undeveloped, proven reserves calculated behind the casing)

• Proved (P90), Probable (P50) and Possible (P10) ReservesProved (P90), Probable (P50) and Possible (P10) Reserves

24

Page 25: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization

Classification of Reserves is key!Classification of Reserves is key!• Proved (P90) Reserves Proved (P90) Reserves – – 90 % chance or greater that the reserves

are there; must have “very high certainty” that reserves can be “economically” recovered with current technology. Security and Exchange Commission (SEC) allows only reporting of P90 as official data.

• Probable (P50) Reserves- Probable (P50) Reserves- 50 % chance that the reserves are there

• Possible (P10) Reserves - Possible (P10) Reserves - 10 % chance that the reserves are there

• Remember estimates are based on data from a location as much as 2 miles below the surface, and on characteristics of a hole 6” in diameter extrapolated over several hundred acres of reservoir…

Reserves estimating is more of an art than a science!

25

Page 26: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir CharacterizationNote that the world understands that “proved” Note that the world understands that “proved”

reserves is what’s important…reserves is what’s important…

28

USA Today

Page 27: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization29

Domestic International

10th !

Note that the world understands that “proved” Note that the world understands that “proved” reserves is what’s important…reserves is what’s important…

Page 28: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Reservoir Characterization30

6th !

Note that the world understands that “proved” Note that the world understands that “proved” reserves is what’s important…reserves is what’s important…

Page 29: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design & Drilling

Job #2Well Design and Drilling

31

Page 30: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Well Design Well Design during drillingduring drilling

``

Blowout Preventer

Surface

Casing Casing StringsStrings

Blowout Preventer – Monitor & Controls the pressure within each casing string of the well

Casing String – Successive sections of pipe of decreasing diameter set one inside the other and cemented in place

32

Page 31: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

How is Casing Installed?How is Casing Installed?

36”hole36”hole

•Drill 36” hole to design depthDrill 36” hole to design depth

•Slide 30” casing to depth within Slide 30” casing to depth within 36” hole36” hole

•Cement 30” casing to 36” holeCement 30” casing to 36” hole

•Drill 24” hole thru cement in 30” Drill 24” hole thru cement in 30” casing to design depthcasing to design depth

•Slide 20” casing to depth within Slide 20” casing to depth within the 24” holethe 24” hole

•Cement 20” casing to 24” holeCement 20” casing to 24” hole

•And so on ….And so on ….

33

30” 30” CasingCasing

24”hole24”hole

20” 20” CasingCasing

Surface

Page 32: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Typical Well Casing ProgramTypical Well Casing Program

30 in30 in(36”hole)(36”hole)

20 in20 in(26”hole)(26”hole)

13 3/8 in13 3/8 in(17 ½” hole)(17 ½” hole)

9 5/8 in9 5/8 in(12 ½” hole)(12 ½” hole)

500 ft500 ft

7,000 ft7,000 ft

10,000 ft10,000 ft

3,000 ft3,000 ft

7 in Liner7 in Liner(8½” hole)(8½” hole)

15,000 ft15,000 ft

DepthDepthCasing SizeCasing Size

•30” Casing 30” Casing = Conductor Pipe (hung at = Conductor Pipe (hung at surface; it is drilled or driven)surface; it is drilled or driven)

•20” Casing 20” Casing = Surface Casing (hung at = Surface Casing (hung at surface; may not be necessary, surface; may not be necessary, depends on geology)depends on geology)

•13 3/8” Casing 13 3/8” Casing = Intermediate Casing = Intermediate Casing (hung at the surface)(hung at the surface)

•9 5/8” Casing 9 5/8” Casing = Intermediate casing = Intermediate casing (depending on design, could be hung (depending on design, could be hung off of 13 3/8”)off of 13 3/8”)

•7” Liner 7” Liner = Not a casing per se because = Not a casing per se because it is hung off the end of the 9 5/8” it is hung off the end of the 9 5/8” casing; it doesn’t run to the surfacecasing; it doesn’t run to the surface

34

Page 33: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Well Casing ProgramWell Casing ProgramWhy is casing needed?Why is casing needed?•Protect freshwater aquifers Protect freshwater aquifers that that might be present in the subsoilmight be present in the subsoil

•Prevents contaminationPrevents contamination between between rock strata layersrock strata layers

•Contain any unusual pressureContain any unusual pressure in in the layers of rock strata that might the layers of rock strata that might be encounteredbe encountered

•Prevent borehole collapse Prevent borehole collapse while while drilling deeper drilling deeper

•Provide Provide control of drilling mud control of drilling mud being pumped down-holebeing pumped down-hole

High Pressure Zone

Low Pressure Zone or future producing zone

Black Gold!Cap Rock

Wellbore thru the rock

strata

35

Freshwater Aquifer

http://www.youtube.com/watch?NR=1&v=fNq2uKfSvhw&feature=endscreen

Page 34: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Well DesignWell Designduring completionduring completion

``

Surface

PerforationsPerforations

Xmas Tree– Monitor & Controls the pressure within the each casing of the well while allowing the well to flow to the surface

Perforations – Holes shot thru the casing to allow fluid to flow into the wellbore

Down-hole Completion Equipment – Devices & tools installed in the well to control which reservoir is produced and to give real-time data

Down-hole Down-hole Completion Completion Equipment`Equipment`

36

Xmas Tree

Page 35: From the New York Times, Feb. 3, 2012

Captured from a YouTube Video.

This is a section of pipe tubing;

Shaped charges will be set off to make the perforations.

These pictures show the power of the shaped charges…

Page 36: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Well DesignWell Designduring completionduring completion

``

Surface

PerforationsPerforations

Production Tubing – A string of pipe that runs from the producing zone to the wellhead in which oil and/or gas flows to the surface facilities

Down-hole Down-hole Completion Completion Equipment`Equipment`

38

Xmas Tree To Production

Facilities

Page 37: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Types of Well DesignTypes of Well Design

Black Gold!Black Gold!Cap RockCap Rock

39

•“Straight-hole”

•Directional or “Deviated Well”

•“Horizontal Well”

Page 38: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Deviated WellDeviated WellWhy drill a deviated well?Why drill a deviated well?

Black Gold!Black Gold!Cap RockCap Rock

High High Pressure Pressure

zones behind zones behind faultfault

40

Fault

• Known fault can cause an unplanned deviation from the projected drill path

• High pressure zones might exist to one side of a fault

• Subsurface “debris” like ancient reefs could cause a slower drill rate (ROP) than desired (time is money!)

Page 39: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Deviated, Horizontal WellsDeviated, Horizontal WellsWhy drill a horizontal well?Why drill a horizontal well?

41

• Low permeability reservoirs are best produced by horizontal wells, the ultimate in “deviated well”

• Three kinds of horizontal wells, long/short/medium radius:

• Long = 10 per 100ft

• Medium = 20 per 100ft• Short = 40 per 100ft

Target Reservoir

Page 40: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Horizontal Well ProcedureHorizontal Well Procedure

42

• At start of deviation, replace drillbit with a “bent sub”, gyroscope, steerable mud motor & bit

• Add logging-while-drilling (LWD) unit & power pack within 20 ft of bit

• Slowly rotate drillstring to prevent “sticking” & start “pushing” steerable system forward while flowing mud to mud motor

• Drill while being pushed forward & steer system as need be to maintain horizontal direction

Page 41: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Multilateral, Multilateral, Horizontal WellsHorizontal Wells

43

• Added advantage of horizontal well design is to include “Multilaterals” (additional boreholes from the same drillsite)

• From one wellsite, several sections of the reservoir can be accessed & produced

Plan view

Drillsite

Significant Production

Increase

Page 42: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling Plan

Horizontal Drilling AdvantagesHorizontal Drilling Advantages

44

• Increase in reserves in place by 2% of the original Increase in reserves in place by 2% of the original oil in place (OIIP)**oil in place (OIIP)**

• Cost ratio of horizontal versus vertical wells is Cost ratio of horizontal versus vertical wells is approximately 2 to 1**approximately 2 to 1**

• Production ratio for horizontal wells versus vertical Production ratio for horizontal wells versus vertical wells is approximately 3.2 to 1**wells is approximately 3.2 to 1**

• Inclusion of multilaterals increases production Inclusion of multilaterals increases production ratio even more!!ratio even more!!

** per U.S. Department of Energy

Page 43: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Well Design

Final Well ProgramFinal Well Program• Well Schematic Well Schematic – Showing hole – Showing hole

(bit) size, casing plan, mud plan, (bit) size, casing plan, mud plan, planned TDplanned TD

• Drilling Time Estimate Drilling Time Estimate – – Breakdown total time into key Breakdown total time into key components to various depthscomponents to various depths

• Well Cost Estimate Well Cost Estimate – Listing of all – Listing of all expected costs for the wellexpected costs for the well

• Well Time VS. Depth Plot Well Time VS. Depth Plot – a – a “picture” of how much drilling “picture” of how much drilling time is planned for each casing time is planned for each casing runrun

45

Page 44: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

LETS GET STARTED DRILLING!!

46

Page 45: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

OffshoreOnshore

Well Location?

47

Page 46: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

On-structureOn-structure(“In-field”, Appraisal)(“In-field”, Appraisal)

ExploratoryExploratory(“Wildcat Well”)(“Wildcat Well”)

Normal Success Normal Success Rate = Rate = +/-+/- 1 in 10 1 in 10 toto

+/- 3 in 10+/- 3 in 10

Normal Success Normal Success Rate = Rate = +/- 5 in 10 +/- 5 in 10 to to

+/-+/- 9 in 109 in 10

Well Type?Well Type?

48

Page 47: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Main Components of Main Components of Drilling

DerrickDerrick

Drill BitDrill Bit

49

Drill MudDrill Mud

Traveling Block/SwivelTraveling Block/Swivel

Turntable/Kelly/ Turntable/Kelly/ Kelly BushingKelly Bushing

Casing (different sizes)Casing (different sizes)Blowout PreventerBlowout Preventer

Drill StringDrill String

Page 48: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Drilling MudDrilling MudWhat is Drilling MudWhat is Drilling MudA A mixture of clay mixture of clay with either water, oil, oil and with either water, oil, oil and water, or synthetic organic matter and water. water, or synthetic organic matter and water. To this, various viscosity and density To this, various viscosity and density enhancers and additives enhancers and additives to achieve specific to achieve specific objectives (adjust pH, control bacteria, de-objectives (adjust pH, control bacteria, de-foam, filtrate reducers, etc.) are added.foam, filtrate reducers, etc.) are added.

How does it get in the well?How does it get in the well?Mud is pumped Mud is pumped into the drill pipeinto the drill pipe, flows down , flows down the drill pipe, the drill pipe, exits out the drill bitexits out the drill bit, and flows, , and flows, along with rock cuttings, along with rock cuttings, up the borehole up the borehole back back to the rig.to the rig.

Drill BitDrill Bit

Mud

out

Mud

outMudMud

ININ

Well Well borebore

50

Page 49: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

What is the Drilling Mud System?What is the Drilling Mud System?

51

1. Mud Pit or Tanks

1. Mud Pit or Tanks

4. Circulate Mud down drillstring and back up borehole exit below Blowout Preventer

4. Circulate Mud down drillstring and back up borehole exit below Blowout Preventer

A ‘CLOSED SYSTEM’ where the drilling mud is mixed &

pumped:

•from the mud pit/tanks, •up into the mud hose•down into the drillstring, •thru the drillbit, •up the wellbore,•over the shellshakers and •back to the mud pit/tanks

A ‘CLOSED SYSTEM’ where the drilling mud is mixed &

pumped:

•from the mud pit/tanks, •up into the mud hose•down into the drillstring, •thru the drillbit, •up the wellbore,•over the shellshakers and •back to the mud pit/tanks

2. Mud Pump

2. Mud Pump

3. Mud Hose

3. Mud Hose

5. Shale shakers5. Shale shakers

Page 50: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

What does Drilling Mud do?What does Drilling Mud do?

• Cools drill-bitCools drill-bit

• Stabilizes borehole wallsStabilizes borehole walls

• Transports rock cuttings (“cuttings”) to Transports rock cuttings (“cuttings”) to surface (mud engineer examines cuttings surface (mud engineer examines cuttings w/microscope to check for oil and porosity)w/microscope to check for oil and porosity)

• Offsets hydrostatic/reservoir pressureOffsets hydrostatic/reservoir pressure

52

Page 51: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling Plan

How Critical is How Critical is Drilling Mud?Drilling Mud?

SG

TV

DB

DF

(m

)

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

5,500

0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3

20"

13.5/8"

10.3/4" x 9.7/8"

• Blue line is Pore Pressure (the Blue line is Pore Pressure (the pressure from the overburden)pressure from the overburden)

• Red line is the Pressure that Red line is the Pressure that will fracture the Reservoirwill fracture the Reservoir

• Yellow line is Mud Weight Yellow line is Mud Weight pressurepressure

• If Mud weight is too hi, it will If Mud weight is too hi, it will damage the reservoir; if too damage the reservoir; if too low, a well blowout is possible!low, a well blowout is possible!

53

OverpressureOverpressurezoneszones

Specific Gravity

Page 52: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Drilling Contract TypesDrilling Contract Types

• Costs per Day (Costs per Day (DAY RATEDAY RATE))

• Costs per Foot (Costs per Foot (FOOTAGE RATEFOOTAGE RATE))

• Set Costs (Set Costs (TURNKEY BASISTURNKEY BASIS))

• Success often depends on quality & Success often depends on quality & experience of Operatorexperience of Operator

55

Page 53: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Drilling OperationsDrilling Operations• Survey well locationSurvey well location• Build roads, clear and level groundBuild roads, clear and level ground• Drill water well (optional)Drill water well (optional)• Layout casing pipe/drill string & Layout casing pipe/drill string &

equipmentequipment• Prepare drilling mudPrepare drilling mud• Assemble RigAssemble Rig• Drill each segment; set casing & Drill each segment; set casing &

cementcement

56

Page 54: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Drilling Operations (cont’d)Drilling Operations (cont’d)

• PlannedPlanned drill breaks: layout and position drill breaks: layout and position casing on deck, circulate bottom to remove casing on deck, circulate bottom to remove cuttings, coring, drill stem testing, etc.cuttings, coring, drill stem testing, etc.

• UnplannedUnplanned drill breaks: stuck pipe,lost drill breaks: stuck pipe,lost circulation, required fishing trip, etc.circulation, required fishing trip, etc.

• Let’s look at POSSIBLE DRILLING Let’s look at POSSIBLE DRILLING PROBLEMS, CORING and WELL LOGGINGPROBLEMS, CORING and WELL LOGGING

57

Page 55: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Possible Drilling Problems• Lost tool Lost tool (something breaks off or is dropped in well)(something breaks off or is dropped in well)

• Stuck Pipe Stuck Pipe (drill pipe adheres to well walls due to suction/differential (drill pipe adheres to well walls due to suction/differential pressure or dogleg in wellbore)pressure or dogleg in wellbore)

• Sloughing shale Sloughing shale (swelling of shales, drops to bottom, can’t circulate (swelling of shales, drops to bottom, can’t circulate out)out)

• Lost circulation Lost circulation (high porosity zone/cavernous zone)(high porosity zone/cavernous zone)

• Corrosive gases encountered Corrosive gases encountered (hydrogen sulfide)(hydrogen sulfide)

• Abnormal high pressure Abnormal high pressure (drill into/through a high press zone)(drill into/through a high press zone)

• Blowout Blowout (mud weight not sufficient to hold back abnormal high (mud weight not sufficient to hold back abnormal high pressure gas; gas flows to surface and ignites unexpectedly)pressure gas; gas flows to surface and ignites unexpectedly)

58

Page 56: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

What is Coring?• Two types of coring:

• Sidewall Cores (1”dia X 4” long)• Rotary Cores (3 ½” to 5 ¼” dia X

30-50 FEET long)

59

Page 57: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

What is a Well Log?• After reaching the well “TD”, the well-bore is

logged using a tool that is “run” downhole on a cable.

• In the tool are sensors that measure rock and fluid properties continuously down the borehole.

• Properties measured include: resistivity of the rock, conductivity thru the rock, size of borehole, rock’s reaction to nuclear radiation, etc.

• A long, fan-folded, “chart” prints out the data

60

Page 58: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Logging Types (not all)

Each type of log has its advantages and disadvantages and hence Each type of log has its advantages and disadvantages and hence are used at different times and in different situations.are used at different times and in different situations.

• Caliper LogCaliper Log• SP (spontaneous potential) LogSP (spontaneous potential) Log• Dip/dipmeter LogDip/dipmeter Log• Electrical Resistivity LogElectrical Resistivity Log• Sonic/Acoustic Velocity LogSonic/Acoustic Velocity Log• Natural Gamma Ray Radiation LogNatural Gamma Ray Radiation Log• Neutron (Formation) Density LogNeutron (Formation) Density Log• Neutron Porosity LogNeutron Porosity Log• Nuclear Magnetic Resonance LogNuclear Magnetic Resonance Log

61

Page 59: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Drilling Questions• How many bidders? What are the advantages of How many bidders? What are the advantages of

selected contractor?selected contractor?• What type of rig contract? What type of rig contract? • What is fixed price / what is variable price? Any What is fixed price / what is variable price? Any

rented equipment included?rented equipment included?• Does contractor use own-crew or “rented” crew?Does contractor use own-crew or “rented” crew?• What has been safety record of this rig/crew?What has been safety record of this rig/crew?• Who is the Tool Pusher and what is his/her Who is the Tool Pusher and what is his/her

experience?experience?• How much coring and logging is planned?How much coring and logging is planned?

62

Page 60: From the New York Times, Feb. 3, 2012

Petroleum Engineer: Drilling

Click here to see an Onshore Drilling

Animation

63

Page 61: From the New York Times, Feb. 3, 2012

WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?

REVIEW – SESSION 3

• Deciding what, where and how to drill is a _______ effort composed of a __________, ____________, __________ and __________ and many others.

• The measure of open spaces in rock is the __________; the measure of the ability of fluid to flow thru rock is the ___________.

• The amount of oil/gas in a reservoir currently available for production is called what? _________.

• The most important type reserves and the only one the SEC will accept are the ______________ reserves.

• Reserves estimating is more of an ______ than a science.

• Successive sections of pipe of decreasing diameter set one inside the other and cemented in a wellbore is the _______ ______.

• Protection of freshwater aquifers in a well is done by the ________.

TEAM

64

GEOLOGIST GEOPHYSICIST LANDMAN

POROSITY

P90 OR PROVED

CASING STRING

ENGINEER

PERMABILITY

RESERVES

ART

CASING

Next page

Page 62: From the New York Times, Feb. 3, 2012

WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?WHAT HAVE WE TALKED ABOUT?

REVIEW – SESSION 3

• Two well types: ______________________ and _______________________.

• The worst odds of an exploratory well being successful is ___in 10; the worst odds of an on-structure/appraisal well being successful is ___in 10.

• When drilling, the drill bit is kept cool by the ______.

• If mud weight is too high, it will damage the ___________; if too low, a well __________ is possible.

• The depth below surface to the bottom of a well is the _____ _____ abbr. as “TD”.

• A technique of running a special tool downhole to take measurements around the payzone is called well _________.

• Engineers are highly trained, overworked, and under-appreciated and therefore they should be paid _________!

65

EXPLORATION OR “WILDCAT” APPRAISAL OR ON-STRUCTURE

3

BLOWOUT

LOGGING

1

MUD

RESERVOIR

TOTAL DEPTH

MILLIONS!

Page 63: From the New York Times, Feb. 3, 2012

Thank You!Thank You!RememberRememberRememberRemember

Geology Rocks!Geology Rocks!66

REVIEW – SESSION 3

Page 64: From the New York Times, Feb. 3, 2012

Week 1: Geology of Coal, Oil and GasWeek 1: Geology of Coal, Oil and Gas Week 2: Processes of Exploration Week 2: Processes of Exploration Week 3: Engineering Processes: Reservoir/ Week 3: Engineering Processes: Reservoir/

Drilling/Production Drilling/Production

The Course OutlineThe Course Outline

Week 4: ‘Vagabond Group’ chooses 2 prospectsWeek 4: ‘Vagabond Group’ chooses 2 prospects

Your chance to invest !Your chance to invest ! Week 5: ‘Vagabond Group’ drillsWeek 5: ‘Vagabond Group’ drills Week 6: the Payout?!Week 6: the Payout?!

The Basics:The Basics:

The Adventure:The Adventure:

A black-gold millionaire or dry hole hobo?A black-gold millionaire or dry hole hobo?

Page 65: From the New York Times, Feb. 3, 2012

Petroleum Engineer - REFERENCESREFERENCES• http://www.youtube.com/watch?v=BdRcALtA8CE&NR=1• http://www.api.org/ehs/performance/explore/moreexplorprodu

ction.cfm

• http://tonto.eia.doe.gov/dnav/ng/ng_enr_sum_dcu_rusf_a.htm • http://www.eia.doe.gov/pub/oil_gas/natural_gas/data_publicati

ons/crude_oil_natural_gas_reserves/current/pdf/appb.pdf

• http://www.eia.doe.gov/pub/oil_gas/petrosystem/petrosysog.html

• http://www.energy.gov/energysources/fossilfuels.htm • http://tonto.eia.doe.gov/energy_in_brief/foreign_oil_dependenc

e.cfm

• http://www.eia.doe.gov/pub/oil_gas/petroleum/data_publications/company_level_imports/current/import.html

• http://www.eia.doe.gov/neic/speeches/Caruso061305.pdf • http://www.npc.org/Study_Topic_Papers/7-STG-GlobalAccess.pd

f• http://www.eia.doe.gov/neic/infosheets/crudeproduction.html • http://www.eia.doe.gov/pub/oil_gas/petroleum/analysis_publica

tions/chronology/petroleumchronology2000.htm#T_2_

• http://images.google.com/imgres?imgurl=http://www.osha.gov/SLTC/etools/oilandgas/images/rig09.jpg&imgrefurl=http://www.osha.gov/SLTC/etools/oilandgas/illustrated_glossary.html&h=628&w=353&sz=56&hl=en&start=18&tbnid=T-wN7VuGlNKMVM:&tbnh=137&tbnw=77&prev=/images%3Fq%3Drotary%2Boil%2Bdrilling%2Brig%26gbv%3D2%26hl%3Den%26safe%3Doff%26sa%3D

• http://www.investopedia.com/features/industryhandbook/oil_services.asp

INTERNET

68

• http://www.oilprimer.com/• http://oilandgasinvesting.com/ • http://www.beg.utexas.edu/mainweb/presentations/2004_p

resentations/pdf/wang_111704.pdf• http://www.petroleum-economist.com/• http://www.eia.doe.gov/bookshelf/brochures/gasolineprices

primer/index.html

• http://www.eia.doe.gov/pub/oil_gas/natural_gas/data_publications/cost_indices_equipment_production/current/coststudy.html

• http://oilandgasinvesting.com/news/1-latest-news/50-investing-in-oil-a-gas-based-on-cash-flow-a-costs-versus-recoverable-reserves.html

• http://www.energyinst.org.uk/education/glossary/ • http://fossil.energy.gov/programs/reserves/npr /publications

/Drilling_for_Oil_and_Gas.pdf• http://www.glossary.oilfield.slb.com/ • http://en.wikipedia.org/wiki/Well_drilling• http://en.wikipedia.org/wiki/Drilling_mud• http://www.youtube.com/watch?v=LcNZfJbH5pk• http://www.youtube.com/watch?v=oZUUGpecphc&NR=1• http://www.youtube.com/watch?v=fl8L4qSqSqE• http://www.youtube.com/watch?v=cXd01nq_HK8• http://www.geolab.unc.edu/Petunia/IgMetAtlas/mainmenu.

html• http://www.offshore-mag.com/index.cfm • http://tonto.eia.doe.gov/ftproot/petroleum/tr0565.pdf • http://www.horizontaldrilling.org/ • http://home.versatel.nl/the_sims/rig/lakepeigneur.htm

Page 66: From the New York Times, Feb. 3, 2012

Petroleum Engineer - REFERENCESREFERENCEShttp://www.youtube.com/watch?NR=1&v=fNq2uKfSvhw&feature=endscreen http://www.youtube.com/watch?v=Q9gGqNUxQ5Q&feature=endscreen&NR=1 http://en.wikipedia.org/wiki/Completion_(oil_and_gas_wells) http://gekengineering.com/Downloads/Free_Downloads/Perforating_Basics.pdfhttp://en.wikipedia.org/wiki/Semi-submersibles http://www.ehow.co.uk/info_8712642_deep-vs-shallow-water-drilling.html http://www.ehow.co.uk/about_4597210_offshore-oil-rigs.html

INTERNET

69

http://www.osha.gov/SLTC/etools/oilandgas/images/bop_stack.jpghttp://www.youtube.com/watch?v=lkqpEXy0frE&feature=related http://www.youtube.com/watch?v=sYTO_0_0ReQ&feature=related http://www.youtube.com/watch?v=4ntsk1g-2oY&feature=related http://www.techstreet.com/apigate.html http://en.wikipedia.org/wiki/Jackup_barge

Page 67: From the New York Times, Feb. 3, 2012

70

JACKUP DRILLING RIGS

Page 68: From the New York Times, Feb. 3, 2012

71

SEMI-SUBMERSIBLES RIGS

Page 69: From the New York Times, Feb. 3, 2012

72

INLAND WATER RIGS

Page 70: From the New York Times, Feb. 3, 2012

Deepwater system types (2008) 73