Research Leader Mark Kelley is bringing the secrets of subsurface geology to light. A hydrogeologist on the Battelle Oil & Gas team, he provides technical expertise for enhanced oil recovery (EOR) and carbon capture and storage (CCS) projects. Over the last decade, Mark’s work has put him at the forefront of both EOR and CCS. He has played an integral role in several U.S. Department of Energy (DOE)-funded demonstration projects for CCS, including the AEP Mountaineer demonstration project and the Battelle-led Midwest Regional Carbon Sequestration Partnership (MRCSP). As a hydrogeologist, Mark uses a variety of technologies to characterize subsurface formations and model how fluids move through them. For CCS, he applies his expertise to identify promising sites for carbon dioxide (CO2) storage, quantify their storage potential and monitor the injection process. His subsurface characterization work is also used to build models to inform EOR activities.