The In Situ Profile Modification Effect of Deposited Coke in Carbonate Reservoirs

摘要

In the carbonate reservoir, the fracture and cavity increased the gas break possibility easily. When the air was injected into the reservoir, the oxidation reaction changed the physical property of the crude oil and increased its viscosity. In this study, a physical modeling experiment was applied to analyze the in situ profile modification effect of oxidized oil by artificial fracture and cavity core. The results showed that the oxidation reactions increased the crude oil viscosity and reduced mobility ratio. The gas break phenomenon was suppressed in some degree.