Evaluation of the Petrophysical Properties of a Carbonate-Rich Caprock for CO2-Geological-Storage Purposes

摘要

Before any CO2-geological-storage operation, the caprock's ability to prevent CO2 leakage must be assessed carefully. Preventing leakage is related primarily to the caprock pore structure and to the interfacial properties of the caprock and the fluids in place, specifically the brine that imbibes into the caprock and the CO2 stored in the underlying reservoir. An experimental effort characterized some of these parameters in the carbonate-rich caprock and the reservoir conditions of a depleted gas field in France.