摘要
喇嘛甸油田断层边部井网密度相对较低且注采完善程度低,断层附近剩余油相对富集,采取普通直井方式不能高效地挖掘断层边部剩余油。为此,探索了采用定向井方式进行挖掘断层边部剩余油的方法。利用井震结合三维断层建模成果及单砂体研究成果,结合注采关系及剩余油特点,设计完钻2口定向井;通过定向井完钻后动静结合的剩余油综合分析,搞清了剩余油富集部位,射孔后取得了较好开发效果;针对开采中出现的问题及时分析,并进行措施调整,使定向井保持了较好的开采效果,大幅度地提高了特高含水期断层边部油层的动用程度及油田采收率。
The faults margin in Lamadian Oilfield is characterized by rather lower well-spacing density and not favorite injection-production perfected degree, the remained oil nearby is pretty rich, but with the help of ordinary vertical wells, the oil can not be effectively tapped. Therefore directional well pattern is developed and adopted to realize the above purpose. By means of 3D well-seismic intergrated fault modeling achievements and the studied results of individual sandbody, two directional wells are designed and drilled according to the injection-production relationship and remained oil features; through the comprehensive analysis of the oil combined static and dynamic performances of the two drilled wells, the enriched positions of the remained oil are made clear, and moreover after perforated, much better developed effects are obtained ; in the light of the problems appeared in the production, the corresponding analyses are engaged and furthermore the adjustment contermeasures are put into practice, so the effects stated above can be sustained, finally the developed degree and oil recovery of the marginal oil reservoirs near the faults are enhanced to a great deal at the period of ultra-high water cut.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第3期83-87,共5页
Petroleum Geology & Oilfield Development in Daqing
关键词
断层边部
剩余油
定向井
挖潜效果
fault margin
remained oil
directional well
tapped effect
