Importance of conformance control in reinforcing synergy of CO2 EOR and sequestration

Injecting CO 2 into hydrocarbon reservoirs can enhance the recovery of resources, and simultaneously, be stored in reservoirs, reducing considerable amount carbon emissions atmosphere. However, injected tends to go through fractures, high-permeability channels streaks present resulting inefficient coupled with low storage performance. Conformance treatments -resistant crosslinked polymer gels were performed this study mitigate channeling issue promote synergy between enhanced oil (EOR) subsurface sequestration . Based on a typical low-permeability -flooding reservoir China, studies investigate EOR performance without conformance treatment. The effect permeability contrast matrices, treatment size, plugging strength efficiency was systematically investigated. results indicated that after treatments, problem mitigated during flooding storage. more effectively utilized recover hydrocarbons, entered wider spectrum pore spaces. Consequently, trapped underground. Pronounced factors figured out. Compared sensitive materials. This observation important for design CCUS-EOR projects. According study, materials should reduce channel make channel/matrix ratio below 30. demonstrate importance maximizing process achieve both improvement efficient provides guidelines successful field applications transport control geo-utilization