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Gulf Coast Stacked Storage SECARB Phase II Test #1. SECARB Stakeholders’ Meeting Atlanta GA March 18-19, 2008. Susan Hovorka, Tip Meckel, F. Wang, H. Zeng, J. Paine, JP Nicot Gulf Coast Carbon Center Bureau of Economic Geology The University of Texas at Austin. Partners.

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gulf coast stacked storage secarb phase ii test 1

Gulf Coast Stacked StorageSECARB Phase II Test #1

SECARB Stakeholders’ Meeting Atlanta GA March 18-19, 2008

Susan Hovorka, Tip Meckel, F.Wang, H. Zeng, J. Paine, JP Nicot

Gulf Coast Carbon Center

Bureau of Economic Geology

The University of Texas at Austin

slide2

Partners

  • Bureau of Economic Geology, Jackson School of Geosciences, UT-Austin
  • Denbury Resources
  • Schlumberger CO2
  • Southern Company
  • Mississippi State University
  • University of Mississippi

GCCC Team:

Sue Hovorka, Tip Meckel,

Fred Wang, Hongliu Zeng, Jeff Paine, J. P. Nicot,

slide3

Geographic Focus of SECARB Program

Mississippi Interior

Salt Basin Province

OK

MS

Source of large volumes of

CO2 via existing pipelines

AR

TX

Proven

hydrocarbon

seals

Sabine

Uplift

AL

DRI pipelines

FL

Cranfield

LA

Plant

Daniel

slide4

LA

MS

I-55

Cranfield Unit operated by Denbury Resources

Brookhaven

DRI pipeline

US 84

Hurricane

Lake

Mallalieu

NATCHEZ

Adams

Franklin

Non-Tusc

Fields

Miss.

River

slide5

Unitized

boundary

Well < 7,000 ft

Structure contour

top Tuscaloosa sand

OBS

29-12

INJ

slide6

Well 29-12: New Injector

Average

H: 283 md

V: 47 md

Average

H: 20.5 %

V: 20.7 %

INJECTION ZONE

slide8

3-1/2" 10.2 ppf 13 Chrome tubing

w/VAM TOP connections

1/4" TEC cable; 16 gauge single conductor

encapsulated in 1/4" tubing

16" casing set @ 222\'

10-3/4" casing set @ 1,825\'

Current depth 9,580’

Proposed Monitoring Zone

13-Chrome Isolation packer w/ feed throughs

13-Chrome Selective seat nipple

Pressure transducer

Side Pocket Mandrel w/dummy gas valve

1/4" tubing installed between packers to

Provide a conduit btwn isolation packers

CO2 Injection Zone

13-Chrome Production packer w/ feed thrus

13-Chrome No Go seat nipple

Tuscalusa

perforation

Pressure transducer

Side Pocket Mandrel w/dummy gas valve

7" casing set @ 10,305\'

slide9

Above-zone monitoring to document no well leakage

Monitoring Interval

Regional Seal

Local Seals

Cored

Interval

Injection Interval

slide11

NORTH

SOUTH

EAST

WEST

slide12

W-E

OBS

29-12

S-N

Cranfield Anticline

~ 1 mile

slide13

29-12: New

Injection Well

Ella G. Lees #7

Observation Well

Vernon Johnson #2:

Phase 3 area

slide16

30 Hz stratal slice injection interval

Stratal Slice

Frequency Content

50 Hz stratal slice injection interval

slide17

Phase II Monitoring Goals

  • Document pressure propagation preceding CO2 plume
    • Time lapse bottom-hole pressure in pattern – numerous wells
    • Pressure has returned to near pre-production – unique conditions for an oil field
    • Complex fluid mixture – oil +methane+ brine
  • Measure fluid composition change –sweep efficiency
    • Determine effectiveness of available tools
  • Document efficiency of Mississippi oil and gas law in retaining CO2
    • Wells drilled in 1940-1950, P&A 1965
    • Cement behind casing in injection zone
    • Evaluation – reentry or soil gas survey
    • Above zone monitoring program – pressure - fluid if needed
slide18

Phase II Tool Selection

  • Dedicated observation well
    • Three mechanical packer – two perforation zone completion
    • Two downhole pressure/temperature Panex gauges – high reliability
    • Real-time readout
    • Episodic logging
    • Limited fluid sampling
  • Array of time-lapse monitoring between injector and producers
    • Model match/ compared to response in dedicated observation well
    • Logging program – measure sweep efficiency
  • Programmatic value
    • Improved capacity estimate
    • Increase skill in measurement of pressure response preceding plume
    • Document well integrity
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