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SEQUESTRATION PILOT SITE IN THE TEXAS GULF COAST, USA

SEQUESTRATION PILOT SITE IN THE TEXAS GULF COAST, USA. Susan D. Hovorka and Paul R. Knox Bureau of Economic Geology Jackson School of Geosciences The University of Texas at Austin Collaborators: Mark H. Holtz, Joseph S. Yeh, Khaled Fouad, Shinichi Sakurai Partners:

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SEQUESTRATION PILOT SITE IN THE TEXAS GULF COAST, USA

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  1. SEQUESTRATION PILOT SITE IN THE TEXAS GULF COAST, USA Susan D. Hovorka and Paul R. Knox Bureau of Economic Geology Jackson School of Geosciences The University of Texas at Austin Collaborators: Mark H. Holtz, Joseph S. Yeh, Khaled Fouad, Shinichi Sakurai Partners: GEOSEQ (LBNL, LLNL, ORNL) Texas American Resources Company Sandia Technologies LLC BP William Flanders QAd2047(a)c

  2. SEQUESTRATION IN SALINE FORMATIONS, USA STUDY AREAS One formation studied Two formations studied Power plants (dot size proportaional To 1996 carbon emissions) QAd2047(b)c

  3. Pilot site Power plants Industrial sources SETTING FOR SEQUESTRATION: UPPER TEXAS COAST Houston High sand trend in the Frio 20 miles QAd2047(c)c

  4. Pilot REGIONAL CROSS SECTION OF THE GULF COAST m Sea level –1000 –2000 20 miles –3000 Sandstone-dominated units Base meteoric system Mud-dominated units Major growth fault zone Carbonate-dominated units QAd2047(d)c

  5. PURPOSE • Early success in a high-permeability, high-volume sandstone representative of a broad area that is an ultimate target for large-volume sequestration. QAd2047(e)c

  6. PLAN • Build on existing infrastructure for quick start-up, decrease risk • Brine-bearing sand in an onshore, well-characterized oil field • Available logs, 3-D seismic • Access, infrastructure, well bores • Subsurface activities familiar to local community • Area familiar to regulators QAd2047(f)c

  7. PLAN, CONTINUED • Pilot: Scaled-down version of a large project • Small-volume injection • Short duration • Thin sand • Fault-bounded compartment QAd2047(g)c

  8. COMPONENTS OF THE EXPERIMENT • Characterization and modeling • Permitting and NEPA • Well preparation • Baseline monitoring • Injection • Postinjection monitoring • Closure • Technology transfer QAd2047(h)c

  9. PILOT LOCATION Houston Site QAd2047(i)c

  10. INJECTION SITE Proposed monitoring well Proposed injection well QAd2047(j)c

  11. TYPICAL WELL PAD QAd2047(k)c

  12. TYPE LOG Fresh water Injection interval Production in area ft × K RES SP 2000 2 Miocene Oakville, etc. 4000 Anahuac Shale ~–5000 Oligocene Frio Formation 6000 Vicksburg + Jackson Groups ~–8000 8000 Eocene Yegua and Cook Mountain Formations QAd2047(l)c

  13. GEOLOGIC SETTING QAd2047(m)c

  14. PRODUCTION BASE MAP Model area: 54 wells 19 wells with logs Proposed monitor Proposed injector QAd2047(n)c

  15. STRUCTURAL CROSS SECTION QAd2047(o)c

  16. Monitor Injector N SEISMIC MAPPING Time structure, on top MFS-43 QAd2047(p)c

  17. Monitor Monitor Monitor Injection Observation well Injection well SP tvdss Top LN/SN SP tvdss Top LN/SN Anahuac QAd2047(q)c

  18. QAd2047(r)c QAd2047(r)c

  19. PILOT SITE VSHALE-POROSITY MODEL 0.4 r = –0.91 0.35 fsc= 0.357 – 0.3824 * Vsh 0.3 0.25 Shale corrected porosity (fraction) 0.2 0.15 0.1 0.05 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Vshale (fraction) QAd2047(s)c

  20. TOUGH2 SIMULATION Christine Doughty Lawrence Berkeley National Lab GEOSEQ project QAd2047(t)c

  21. TOUGH2 Model Monitor Injection Injector Christine Doughty Lawrence Berkeley National Lab GEOSEQ project QAd2047(u)c

  22. PERMITTING • Permit from Texas Commission on Environmental Quality • Class 5 Permit (experimental injection) • Additional report QAd2047(w)c

  23. MONITORING • Baseline, during injection, postinjection • Pressure, temperature • Wireline logs • Fluid and gas sampling at monitor and injector • Geophysics – crosswell seismic, 4-D VSP, surface tilt, passive seismic • Water supply wells • Ambient CO2 at well head • Any additional areas of risk identified QAd2047(y)c

  24. EARLY SUCCESS • Demonstrate that CO2 can be injected into a brine formation without adverse health, safety, or environmental effects • Determine the subsurface distribution of injected CO2 • Demonstrate validity of conceptual models • Develop experience necessary for success of large-scale CO2 injection experiments QAd2047(z)c

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