高温高盐油藏化学驱提高采收率理论技术与矿场应用  

Review of theoretical technologies and field application of chemical flooding for enhanced oil recovery in high-temperature and high-salinity reservoirs

作　　者：曹绪龙[1] 石静[1] 张磊[1] 刘煜[1] 巩锦程 张文龙 张娜[1] CAO Xulong;SHI Jing;ZHANG Lei;LIU Yu;GONG Jincheng;ZHANG Wenlong;ZHANG Na(Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《油气地质与采收率》2024年第5期16-26,共11页Petroleum Geology and Recovery Efficiency

摘　　要：化学驱是提高采收率的重要方法之一,在油田高效开发中发挥了重要作用。基于中外化学驱技术的发展现状,针对高温高盐的苛刻油藏条件,系统总结了胜利油田化学驱提高采收率的理论技术。通过梳理胜利油田60a来化学驱技术从室内研究到矿场应用所攻克的理论和技术难题,介绍了高温高盐油藏化学驱的发展历程。通过认识驱油剂之间以及驱油剂与原油之间的相互作用和构效关系,迭代创建了高温高盐油藏聚合物“黏弹并重扩波及”理论、表面活性剂“油剂相似富集、阴非加合增效”理论和黏弹性颗粒“变形调驱”理论,并攻关形成了具有胜利特色的高温高盐油藏聚合物驱技术、无碱二元复合驱技术和非均相复合驱技术,攻克了温度为85℃、矿化度为30000 mg/L的油藏大幅度提高采收率的难题,矿场实施的96个化学驱项目的年产油量连续20a占油田年产油量的11%以上。该系列技术为胜利油田产量稳定和可持续发展做出了重要贡献。Chemical flooding is one of the essential means to enhance oil recovery and has played an important role in the efficient development of oilfields.Based on the current development status of chemical flooding technology in China and abroad,the theory and technology of chemical flooding for enhanced oil recovery in Shengli Oilfield were systematically summarized in response to the harsh conditions of high temperature and high salinity reservoirs.This article reviewed the theoretical and technical challenges overcome in the development of chemical flooding technology from indoor research to field application and introduced the develop-ment process of chemical flooding in high-temperature and high-salinity reservoirs of Shengli Oilfield over the past 60 years.By un-derstanding the interaction and structure-activity relationships between oil displacement agents and between oil displacement agents and crude oil,Shengli Oilfield iteratively created the theory of“equal emphasis on viscoelasticity and expansion”for polymers in high-temperature and high-salinity reservoirs,the theory of“similar enrichment of oil agents and anionic non-ionic additive effi-ciency enhancement”for surfactants,and the theory of“control flooding by deformation”for viscoelastic particles.Shengli Oilfield also developed polymer flooding technology,alkali-free binary composite flooding technology,and heterogeneous composite flood-ing technology for high-temperature and high-salinity reservoirs with the characteristics of Shengli Oilfield and overcame the prob-lem of significantly enhancing oil recovery in reservoirs with a temperature of 85℃ and a mineralization of 30000 mg/L.The an-nual oil production of 96 chemical flooding projects implemented in the field has accounted for over 11%of the oilfield’s produc-tion for 20 consecutive years.This series of technologies has made important contributions to the stable production and sustainable development of the Shengli Oilfield.

关 键 词：化学驱 高温高盐油藏 提高采收率 理论技术 加合增效 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]