中国海上油田高效开发与提高采收率技术现状及展望

Status and prospects of efficient development and EOR technologies in China offshore oilfields

近年来,海上原油已经成为国内原油产量增长的主力军,海上油田高效开发对国民经济发展和国家能源安全的重要性日益突显。随着海上油田勘探难度的加大,提高采收率技术对海上油田开发所起作用也日趋重要。海上油田提高采收率技术历经20余年持续攻关,目前已初步形成以海上丛式井网整体加密及综合调整技术、海上化学驱技术、海上稠油热采、低渗油藏气驱为核心的海上油田高效开发技术体系,并分别在绥中、锦州、蓬莱、南堡、旅大、涠洲等油田开展了矿场应用,累计实现增油2200×10^(4)t,阶段提高采收率幅度6个百分点以上。文章系统论述了中国海上油田高效开发与提高采收率技术的进展及现状,全面分析了海上油田提高采收率技术所面临的挑战,并提出相应的对策与发展展望,对于推动海上油田高效开发具有重要参考和借鉴作用。

In recent years,offshore crude oil has become one of the main sources in China's crude oil growth,and the efficient development of offshore oil fields is increasingly important for national economic development and energy security.With the increasing difficulty of offshore oil field exploration,the role of enhanced oil recovery technology in offshore oil field development is becoming increasingly important.After more than 20 years of continuous research and development,China’s offshore enhanced oil recovery technology has initially formed an efficient development technology system for offshore oil fields,with the core of well pattern overall infilling and comprehensive adjustment technology,offshore chemical flooding technology,offshore heavy oil thermal recovery,and gas flooding in low permeability reservoir,which have been applied in oil fields such as Suizhong,Jinzhou,Penglai,Nanpu,and Lvda,achieving a cumulative increase of 21.93 million tons of oil reserves,with a stage increase of oil recovery by 6%.This article systematically discusses the progress and current status of efficient development and enhanced oil recovery technology in China’s offshore oil fields,comprehensively analyzes the challenges faced by EOR technology in China offshore oil fields,and proposes corresponding countermeasures and development prospects,which has important reference value for promoting efficient development of offshore oil fields.