Advance water-flooding theory for low-permeability reservoirs and its application

作者：Wang Daofu^*; Li Zhongxing; Zhao Jiyong; He Yonghong; Hao Fei

来源：Acta Petrolei Sinica, 2007, 28(6): 78-81+86.

• Advance water flooding
• Injection parameters
• Medium deformation
• Non-linear flow
• Threshold pressure gradient

The low-permeability reservoir is noticeably characterized with threshold pressure gradient and medium deformation, which makes high filtration resistance, low oil productivity, quickly decline of oil production and low oil recovery during reservoir development. The changing rules of threshold pressure and medium deformation were described quantitatively on the basis of physical simulation experiment. The effects of media deformation on formation parameters were analyzed. A model for non-linear seepage of low-permeability reservoir was built on the basis of laboratory experiment, filtration theory, numerical simulation and pilot testing. The study result shows that reasonable pressure level, injection pressure, injection intensity, and injection lime in the stage of advance water-flooding should be determined. The theory of advance water-flooding was applied in Changqing Oilfield, and the production rate of oil was raised by 15% to 20%.

• 出版日期2007
• 单位中国石油大学（华东）