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Joint Crosswell and Single-well Seismic Studies of CO2 Injection in an oil reservoir at lost hills, california

Roland Gritto, Thomas M. Daley, and Larry R. Myer

Contact: Roland Gritto, 510/486-7118, rgritto@lbl.gov

Research Objectives
The objective of this research is to study whether crosswell and single-well seismic techniques can be applied to monitor the sequestration of CO2 in oil reservoirs. The advantage of injecting CO2 into oil reservoirs is two-fold: (1) it offers one method of geologic carbon sequestration, while it (2) enhances the recovery of difficult-to-extract oil, which otherwise would remain locked in place.

To continue reading more about this project, view the 1-page pdf here.

 

 

 

 
Poisson ratio based on P- and S-wave velocity: (a) pre-injection ratio; (b) post-injection ratio; (c) result of differencing of the pre-post injection ratios. The black dashes presresent the projection of the CO2 injection intervals ontot he imaging plane, while the red line indicates the location of a fault in the reseroivr. The high values in (c) correspond to regions of increased CO2 concentration spatially correlating with the injection intervals.