Haihai Dong1, Yaguang Qu2,3,*, Ming Liu4, Lei Zhang1, Jiakun Wu5
Energy Engineering, Vol.119, No.4, pp. 1681-1695, 2022, DOI:10.32604/ee.2022.019843
- 23 May 2022
Abstract For low permeability sandstone reservoirs, CO2 flooding has been proved to be an effective method to enhance oil recovery. Reservoir A is a typical conglomerate reservoir in Xinjiang oilfield. The reservoir has strong water sensitivity, and the injection pressure continues to rise. Furthermore the oil well pressure continues to drop. According to the screening conditions of CO2 flooding, the reservoir A can easily achieve CO2 miscible flooding with moderate temperature. And the reservoir has the advantage of being close to the gas source. Firstly, the relationship curve between CO2 oil displacement efficiency and oil displacement pressure was… More >
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