大庆油田CO2驱油技术研究试验进展与展望OA北大核心CSTPCD

CO2 flooding technology has significant advantages in both economic benefits of oil displacement and so-cial benefits of emission reduction,and attracts increasing attention with the proposal of national dual-carbon strate-gy goal.Daqing Oilfield conducted early research on CO2 flooding technology and maintains long-term leading level in the application of CO2 immiscible flooding in China.This paper systematically summarizes the theoretical and technical achievements of CO2 immiscible flooding development design,tracking adjustment and separated layer in-jection technology in Daqing Oilfield,presents commercial test of CO2 immiscible flooding in ultra-low permeability of Yusulin Oilfield,pilot test of CO2 flooding in medium-low permeability Aonan Oilfield and CO2 trial injection test of Gulong shale oil reservoir,and prospects potential applications of CO2 flooding and sequestration technology in Daqing Oilfield and technology research directions for different types of reservoirs,providing valuable insights for research and application of CO2 flooding and sequestration technology in similar reservoirs in China.