胜坨油田注水开发过程中的润湿性变化  

Wettability change during the waterflooding process in Shengtuo oilfield.

作　　者：姚凤英[1] 陈晓军[1] 宗习武[1] 吴妍[2] 

机构地区：[1]胜利油田有限公司地质科学研究院 [2]胜利油田有限公司胜利采油厂

出　　处：《油气地质与采收率》2002年第4期58-60,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家"973"科技攻关项目 (G19990 2 2 5 0 9)

摘　　要：以胜利油区胜坨油田二区沙二段油层为例 ,研究了油层原始润湿性及其在注水开发过程中的变化 ,探讨了含油饱和度、韵律非均质性对润湿性的影响。研究证明 ,原始亲油油层 ,含油饱和度下降 10 %时 ,开始转向亲水 ;原始亲水油层 ,含油饱和度下降 8%时 ,亲水性开始加强。Taking Es 2 oilbearing formation of Shengtuo 2 area in Shengli petroliferous province as example, original wettability of oilbearing formation and its changes in waterflooding are studied, the influence of oil saturation and rhythm heterogeneity on it is discussed. The study shows that when the oil saturation decreases 10%, the original oilwet oilbearing formations begin to turn to be waterwet; when the oil saturation decreases 8%, the waterwet behavior of the original waterwet oilbearing formation begin to be stronger. The rhythm wettability of deposition has important influence on oilbearing formation.

关 键 词：胜坨油田 注水开发过程 润湿性 润湿指数 含油饱和度 韵律 胜利油区 

分 类 号：TE341[石油与天然气工程—油气田开发工程] TE357.6