Transcript Frio Brine Pilot Project - University of Texas at Austin

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
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of
Economic
Geology
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SEQUESTRATION IN SALINE FORMATIONS, USA
STUDY AREAS
One formation studied
Two formations studied
Power plants (dot size proportaional
To 1996 carbon emissions)
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SETTING FOR SEQUESTRATION:
UPPER TEXAS COAST
Houston
Pilot site
Power plants
Industrial
sources
20 miles
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Economic
Geology
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REGIONAL CROSS SECTION
OF THE GULF COAST
m
Sea level
–1000
Pilot
–2000
20 miles
–3000
Sandstone-dominated units
Base meteoric system
Mud-dominated units
Major growth fault zone
Carbonate-dominated units
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Geology
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PURPOSE
• Early success in a high-permeability,
high-volume sandstone representative
of a broad area that is an ultimate
target for large-volume sequestration.
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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
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Geology
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PLAN, CONTINUED
• Pilot: Scaled-down version of a large project
– Small-volume injection
– Short duration
– Thin sand
– Fault-bounded compartment
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COMPONENTS OF THE EXPERIMENT
•
•
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Characterization and modeling
Permitting and NEPA
Well preparation
Baseline monitoring
Injection
Postinjection monitoring
Closure
Technology transfer
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Economic
Geology
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PILOT LOCATION
Houston
Site
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Economic
Geology
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INJECTION SITE
Proposed monitoring well
Proposed injection well
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Economic
Geology
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TYPICAL WELL PAD
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4000
Fresh water
Oakville, etc.
Anahuac Shale
~–5000
Injection interval
6000
Frio Formation
Oligocene
SP ft × K RES
2000
2
Miocene
TYPE LOG
~–8000
8000
Production in area
Yegua and Cook Mountain Formations
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Economic
Geology
Eocene
Vicksburg + Jackson Groups
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GEOLOGIC
SETTING
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of
Economic
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PRODUCTION BASE MAP
Model area:
54 wells
19 wells
with logs
Proposed monitor
Proposed injector
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Economic
Geology
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STRUCTURAL CROSS SECTION
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of
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Geology
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SEISMIC MAPPING
Time structure, on top MFS-43
Monitor
Injector
N
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Observation well
SP
tvdss
Injection well
Top LN/SN
SP
tvdss
Top LN/SN
Anahuac
Monitor
Monitor
Monitor
Injection
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PILOT SITE VSHALE-POROSITY MODEL
Shale corrected porosity (fraction)
0.4
r = –0.91
0.35
fsc = 0.357 – 0.3824 * Vsh
0.3
0.25
0.2
0.15
0.1
0.05
0
0
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0.2
0.3
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0.5
0.6
0.7
0.8
0.9
1
Vshale (fraction)
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TOUGH2 SIMULATION
Christine Doughty
Lawrence Berkeley National Lab
GEOSEQ project
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Economic
Geology
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TOUGH2
Model
Monitor
Injector
Injection
Christine Doughty
Lawrence Berkeley
National Lab
GEOSEQ project
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Economic
Geology
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PERMITTING
– Permit from Texas Commission on
Environmental Quality
• Class 5 Permit (experimental injection)
• Additional report
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Geology
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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
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Geology
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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
Bureau
of
Economic
Geology
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