稠油油藏火驱开采技术的挑战及展望OA

In-situ combustion(ISC),as a critical method for heavy oil reservoir development,is regarded as an ef-fective replacement technology for steam injection development of reservoirs.In recent years,ISC has experienced rapid development and attracted widespread attention.However,the commercial promotion of ISC still faces many challenges,including unstable combustion front propagation,high gas channeling risks,unreasonable well pattern design,inadequate gas injection parameters optimization,lack of effective control measures,and difficulties in the separation and treatment of produced gas.These key technical issues severely restrict the large-scale application and commercial promotion of ISC.By summarizing current application status and technical bottlenecks of ISC in heavy oil reservoirs,existing key technical challenges are analyzed,and recent research progress in ISC operational pro-cesses,reaction mechanisms and profile control in China and abroad is collected.Additionally,challenges and cor-responding countermeasures of ISC in field application are analyzed through typical application cases.The research provides important reference for the optimization of ISC design and its further popularization.