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Summary of Proposal MTH2748

TitleEvaluation of carbon sequestration experiment in Kansas
Investigator Lohman, Rowena - Cornell University, Earth and Atmospheric Sciences
Team Member
Associate Professor Taylor, Michael - University of Kansas, Geology
SummaryWe request data acquisition over the Wellington oil field in south Central Kansas where there is an ongoing small-scale field test to determine the viability of carbon dioxide (CO2) sequestration and enhanced oil recovery (EOR). Our objective is to monitor changes in the stress state related to fluid injection and understanding the potential for induced earthquake seismicity. As a result of increasing earthquake frequency in the midcontinent, it is becoming especially important to monitor the subsurface stress state during injections, as it is apparent that rocks in the midcontinent region are at critical stresses. Our anticipated InSAR results will be integrated with a sophisticated monitoring system at the injection site composed of a continuous GPS station; an array of fifteen 3-component seismometers from IRIS; and finally, three monitoring wells, each with a down hole high precision accelerometer that will be placed at injection depths. InSAR results will be useful in providing the map pattern of any deformation that may be injection related. Null results will provide useful information to make the case that carbon sequestration in deep highly saline aquifers is a viable storage method. Additionally, we will also be well-positioned to provide recommendations on best practices for the petroleum industry to reduce risks associated with fluid injection. Project deliverables will include coherence and deformation maps, earthquake hypocenters and associated errors. Modeling of potential deformation events will be conducted using either a best-fit elastic dislocation and pressure sources (Mogi) within an half space model, as well as the use of finite element modeling packages (MODFLOW). Funds supporting this research effort comes from an active grant with the US Department of Energy.

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