摘要
为解决特低渗砂岩储集层在开发中遇到的矛盾,对不同渗透率条件下注水开发过程中的地层伤害进行对比分析,制定相应合理开发技术政策。取长庆油田耿43井区和白马中区特低渗透岩心为实验样本,对敏感性、贾敏性、水锁效应以及水质伤害程度进行分析,得出特低渗透储层地层伤害程度一般规律及其与渗透率大小的关系,提出避免储层敏感性伤害及改善水质的措施。该研究结果对类似油田开发具有一定借鉴意义。
Formation damage during the process of water flooding has been analyzed for ultra-low permeability sandstone reservoirs under different permeability conditions,and rational development strategies have been worked out.The cores of ultra-low permeability from the Geng 43 well block and the Middle Baima block in the Changqing Oilfield have been taken as the samples to analyze formation sensitivity,Jamin effect,water lock effect and water injection damage.The general law of formation damage in ultra-low permeability reservoirs and its relationship with permeability has been generalized.Measures of avoiding formation sensitivity damage and improving water quality have been proposed.The study results will provide guidance for the development of similar oilfields.
出处
《特种油气藏》
CAS
CSCD
2011年第2期96-98,140,共3页
Special Oil & Gas Reservoirs
基金
国家重点基础规划"973"项目子课题"大幅度提高石油采收率的基础研究"(G199902250)
关键词
敏感性
水质伤害
特低渗储层
水锁效应
贾敏效应
耿43井区
白马中区
sensitivity
water injection damage
ultra-low permeability reservoir
water lock effect
Jamin effect
Geng 43 well block
Middle Baima well block
