The Rock Springs Uplift (RSU) located in southwest Wyoming USA is one of several sites across the country to be characterized for suitability for CO2 sequestration. Original rock cores of the Weber Sandstone and Madison Limestone formations from the RSU were prepared into 25-mm diameter rock samples. These samples were saturated with brine, aged with brine, and aged with CO2-rich brine. Laboratory triaxial experiments were performed at in-situ reservoir conditions. The effects of brine and COs on the mechanical behaviors of these samples are presented.

This study considers the development of testing apparatus to measure carbon losses in soils, primarily through natural processes. This will provide more information on the mechanisms driving carbon losses and provide insight into how carbon losses in soils can be mitigated.

Reduction in the uncertainties of subsurface properties is important for geothermal energy production and CO2 sequestration. Traditional methods of history matching using well dynamic regimes as observations could be challenging for these projects with a limited number of wells. We suggest measuring subsidence during field development and using it for history matching of subsurface properties. We used DARTS modeling framework to simulate fluid flow in the subsurface and computed geomechanics response using a physics based proxy. We performed history matching using an ensemble smoother with multiple data assimilation (ES MDA). We provided induced seismicity risk assessment using fault slippage criteria.