摘要
长 6油层是安塞油田的主力油层 ,天然微细裂缝比较发育 ,注水开发以来 ,受微裂缝影响 ,部分区块主向油井见效后含水上升快甚至水淹 ,而侧向油井难以见效 ,造成区块内产量和压力分布严重不均 ,影响了开发效果。蜡球暂堵端部脱砂压裂技术可以最大程度地增加油层泄油面积 ,提高填砂裂缝导流能力 ,在现场试验取得了明显的效果 ,为长 6油藏侧向油井的重复压裂改造摸索出一条新的出路。
Chang-6 reservoir is main pay in Ansai oilfield.There are developing natural microfracture.Water cut of oil wells of major direction in some tract rapidly raise indeed watered out since waterflooding and effecting of microfracture,but oil wells of side direction were no-response.It make output and pressure nonuniform in tract and effect development result.How to enhance output of side direction oil well is one of main problems on stable oil production.Wax Bead Temporary Blocking End Sand-Out Fracturing Technique has gained obvious effect in field test.It can increase drainage area of reservoir and improve flow conductivity of sand packed fracture.A new method was fished out through refracturing of side direction oil wells in Chang-6 reservoir.
出处
《钻采工艺》
CAS
2002年第6期39-41,45,共4页
Drilling & Production Technology
关键词
安塞油田
长6油层
端部
脱砂压裂
试验
暂堵
Ansai oilfield,oil reservoir,fracturing,temporary blocking,sand-out
