CCS and Power Systems
Carbon Storage - Regional Carbon Sequestration Partnerships/Injection Projects
SmallScale Field Test Demonstrating CO2 Sequestration in Arbuckle Saline Aquifer and by CO2-EOR at Wellington Field, Sumner County, Kansas
Performer: University of Kansas Center for Research
Project No: FE0006821
This project aims to inject at least 40,000 metric tons of CO2 under super-critical conditions into the Lower Arbuckle Group in Sumner County, Kansas. The Arbuckle Group is an extensive saline aquifer in southern Kansas consisting of dolomitic sandstone and dolomite. An additional 30,000 metric tons will be injected into the overlying oilbearing dolomite of the Wellington Oilfield so that both geologic storage of CO2 in a saline aquifer and miscible CO2-enhanced oil recovery potential can be investigated. The Wellington Field is similar to other oil fields in southern Kansas that have produced over 300 million barrels of oil and in excess of 2.5 trillion cubic feet of gas.
Data previously collected from the study area have been used to develop a robust Arbuckle geomodel (Figure 1) from which reservoir simulation studies will be used to predict the location and composition of the CO2 plume. Additional activities conducted during pre-injection will aid refinement of geologic, seismic, and engineering models.
The project will use state-of-the-art monitoring techniques to track and visualize the location of stored CO2 as well as estimate the amount of CO2 in solution, as residual gas, and mineralized for both injection efforts. These techniques also will provide data to detect potential CO2 leakage, conduct efficient CO2 fateand transport analyses, and validate a CO2 storage simulation model. Monitoring will include: (1) in situ and surface seismic methods; (2) gas and fluid sampling at five levels including in situ Arbuckle, underpressured Mississippian reservoir, near-surface (~600 ft) shallow sub evaporite, shallow unconfined freshwater aquifer (<100 ft), and soil; (3) InSAR (Interferometric Synthetic Aperture Radar) and LiDAR (Light Detection And Ranging) to detect mm-scale scale surface deformation, and (4) continuous GPS and array of sensitive seismometers to measure earthquake activity. In situ measurements of seismic and fluid properties will establish location and composition of the CO2 plume. In situ monitoring instruments include CASSM (continuous active source seismic monitoring), time-lapse crosshole seismic tomography, and U-Tube fluid sampler to record CO2 plume velocity and composition. In situ sampling will include migrated CO2 and tracers, pressure, and temperature. Soil gas probes will measure concentrations and flux chemical constituents.