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Application of SOSAT for State-of-stress Analysis at the FutureGen 2.0 Site

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Key Findings:

  • The probability distribution of the state of stress indicates significant uncertainties in the magnitude of the maximum horizontal stress S(Hmax), while the minimum horizontal stress S(hmin) is well constrained by stress measurements

  • The probability that the Mount Simon reservoir was initially critically stressed is relatively high—25%.

  • When the pore pressure increases to the maximum pressure allowed under the UIC Class VI permit of the FutureGen 2.0 project, the risk of shear failure approaches a probability of 43%.

  • Based on the maximum injection pressure allowed in the UIC Class VI permit, the risk of unintentional hydraulic fracturing is limited

NRAP Tools: SOSAT

Location: FutureGen 2.0, Illinois Basin

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Last Updated March 15, 2021, 20:04 (EST)
Created March 15, 2021, 20:03 (EST)
Citation Appriou D. 2019. Assessment of the Geomechanical Risks Associated with CO2 Injection at the FutureGen 2.0 Site: Application of the State of Stress Assessment Tool (SOSAT). PNNL-28657, Pacific Northwest National Laboratory, Richland, Washington.
Netl Product yes
Organization NRAP
Poc Email robert.dilmore@netl.doe.gov
Point Of Contact Bob Dilmore
Program Or Project NRAP
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