A Techno-Economic Analysis of Coupling Enhanced Hydrocarbon Recovery and CO2 Storage in Gas Condensate Reservoirs

摘要

Coupling enhanced gas (EGR) and condensate (ECR) recoveries with CO 2 storage could potentially maintain fossil fuel supply and reduce CO 2 emissions to the atmosphere. This paper evaluates the techno-economic potential of simultaneous EGR, ECR and CO 2 storage in gas condensate reservoirs. We demonstrate that, for a closed gas condensate reservoir, injecting CO 2 later in production life is more profitable than early injection. This is because it delays CO 2 breakthrough at the production wells while enhancing gas and condensate production. In contrast, for a bottom-water drive gas condensate reservoir, we find that early CO 2 injection minimises water influx from the underlying aquifer. This maximises incremental gas and condensate production and CO 2 storage in the reservoir.