摘要
安塞油田塞158区块有效孔隙度11.0%~13.25%,平均渗透率0.82 m D^2.90 m D,为典型的特低渗透油藏,以注水驱为主,伴随注水开发时间不断延长,含水上升速度加快,目前含水>80%以上油井51口,占总开井数14.9%;油井含水上升后,通过注水井配注调整控制效果较差,笔者从渗流机理出发,对51口高含水井分析其见水机理,并针对不同见水原因提出从堵水调驱、隔采、酸化解堵三个方面着手改善渗流,控制油井含水上升。
The Ansai oiltield 158 block is a typical low permeability reservoir,the effective porosity in Ansai 158 block is between 11.0 % and 13.25 %,and the average permeability is between 0.82 mD and 2.90 mD.Ansai 158 block mainly depends waterflooding, with the development of waterflooding, the speed of water ratio rising is very fast.Now there＇re 51 oil wells whose water ratio is above 80 %,which is 14.9 % of the mining wells.The effect is not ideal through injection allocation adjustment while the water ratio rose.In this paper, the writer analyzes the mechanism of 51 oil wells water breakthrough, and put forward the method of improving interstitial flow with water shut-off and profile control,water exclusion production,acidizing plugging removal.
出处
《石油化工应用》
CAS
2017年第5期30-33,共4页
Petrochemical Industry Application
基金
长庆油田采油一厂"两个一百万"矿场实验项目
关键词
渗流
堵水调驱
酸化解堵
隔采
interstitial flow
water shut-off and profile control
acidizing plugging removal
water exclusion production
