永3平9跨断块阶梯水平井钻完井技术  

Drilling and completion techniques of cross-block ladder horizontal wells:a case of Well Y3p9

作　　者：刘成贵[1] 许军富[1] 徐云龙[2] 

机构地区：[1]胜利石油管理局黄河钻井总公司,山东东营257009 [2]胜利石油管理局钻井工艺研究院,山东东营257017

出　　处：《石油钻采工艺》2013年第1期1-4,共4页Oil Drilling & Production Technology

基　　金：国家科技重大专项"断块油田特高含水期提高水驱采收率技术"(编号:2011ZX05011-003)资助

摘　　要：胜利油田永安区块是典型的复杂小断块油藏。为进一步对该类型油藏进行挖潜增效,在精细描述断层的基础上,设计施工了一口跨断块阶梯水平井,对不同断块内的剩余油使用同一口井进行开采,在提高剩余油采收率的同时,能够降低钻井成本。在分析永3断块储层特点的基础上,针对跨断块阶梯水平井钻完井的技术难点,介绍了胜利油田第1口跨断块阶梯水平井-永3平9井的钻完井工艺。将地质导向和地震剖面相结合,判断断层位置,精确控制井眼轨迹穿越断层,进入断块另一侧油层。采用钻固一体化技术和塑性微膨胀水泥浆体系,大幅度地提高了阶梯水平井的固井质量。该井的成功实施及顺利投产,证明跨断块阶梯水平井可以提高复杂断块油藏的采收率,具有推广价值。Yong’an block of Shengli Oilfield is a typical small complex fault block oil reservoir.In order to explore the potential of this kind of reservoir further,a cross-block ladder horizontal well is used on the basis of recognizing faults,and the remaining oil in different faults is produced by one well.By this method,the recovery is improved and the drilling cost is decreased.The paper analyzes the reservoir characteristics of Yong’an block and illustrates the difficulties for drilling and completion of this well,on the basis of which it introduces the drilling and completion techniques of the first cross-block ladder horizontal well of Shengli Oilfield,Well Y3p9.Geosteering technique and seismic cross section are combined to determine the fault location and to accurately control the well trajectory to pass through faults and dig into another oil layer.Drilling and completion integrated technique and plastic micro-expansion slurry are taken to greatly increase the cementing quality of ladder horizontal wells.This well has been successfully drilled and produced,which proves the cross-block ladder horizontal well can improve the recovery ratio of fault block reservoir,and has promotional value.

关 键 词：跨断块 阶梯水平井 钻完井技术 永3平9井 

分 类 号：TE257[石油与天然气工程—油气井工程]