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High temperature reservoir is extensively disseminated over the world. in order to make efficient use of diverse resources in high temperature reservoir, including underused geothermal resources in high temperature reservoir development. By combining CO 2  displacement mechanism, CO 2  thermal recovery mechanism, and CO 2  geological storage mechanism, a comprehensive numerical model of CO 2  storage and displacement in high-temperature reservoir is created using the high-temperature reservoir in Jilin Oilfield as the research object. Under high temperature and high pressure, the interaction between CO 2  injection and crude oil, hot water, and rock minerals in the formation is investigated. The effects of different development methods and gas injection rate on oil recovery, CO 2  heat recovery and CO 2  storage capacity were compared. The findings reveal that continuous CO 2  infusion miscible flooding provides the best development effect, and that the optimal injection rate should be chosen after taking into account all development effects and economic benefits. The integrated numerical simulation of CO 2  flooding, thermal recovery, and storage can not only effectively develop crude oil and geothermal resources in high temperature reservoirs, but also realize CO 2  geological storage, realizing the multi-purpose of CO 2  and the efficient and cost-effective development of high temperature reservoirs.

Integrated numerical simulation of CO 2 flooding、heat recovery and storage in high temperature reservoir