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 oilbearing formation of Shengtuo 2 area in Shengli petroliferous province as example, original wettability of oilbearing 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 oilwet oilbearing formations begin to turn to be waterwet; when the oil saturation decreases 8%, the waterwet behavior of the original waterwet oilbearing formation begin to be stronger. The rhythm wettability of deposition has important influence on oilbearing formation.
出处
《油气地质与采收率》
CAS
CSCD
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)
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
wettability, wettability index, waterflooding, oil saturation, rhythm, Shengtuo oilfield, Shengli petroliferous province
