浅层套管漏失井监测与治理技术  

Monitoring and repairing technology for shallow casing with leakage point in production wells

作　　者：石岩 陈金峰 左虎[2] 曾波 蒋雅丽 张百燕 SHI Yan;CHEN Jinfeng;ZUO Hu;ZENG Bo;JIANG Yali;ZHANG Baiyan(No.4 Oil Production Plant of PetroChina North China Oil & Gas Company,Langfang,Hebei 065000,China;Exploration Department of Pertochina Jidong Oilfield Company,Tangshan,Hebei 063000,China)

机构地区：[1]中国石油华北油田分公司第四采油厂,河北廊坊065000 [2]中国石油冀东油田分公司勘探处,河北唐山063000

出　　处：《油气井测试》2019年第3期55-60,共6页Well Testing

摘　　要：油田开发中后期油水井浅层套管漏失严重,导致开采效率降低,影响油井产量。分析了浅层套管漏失的原因,提出从建井过程中的井身结构、井身质量,油水井生产过程中的注入水水质、作业施工、日常维护等方面预防套管漏失的措施。采用吸水剖面找漏、封隔器找漏技术在Q1井和J1井两口注水井准确确定漏失点范围,结合不同井的套管漏失特点及漏失层段地层岩性,采取了相应的封堵措施;运用堵漏技术治理浅层套管漏失井7口,证实复合封堵技术对套管漏失、高压层具有较好的封堵效果。结果表明,吸水剖面找漏、封隔器找漏仍是浅层套管漏失监测的有效手段,井下电视、超声波成像等套管检测技术是今后的发展方向。In the middle and late stages of oilfield development,serious leakage of shallow casing in oil and water wells will occur,the leakage will lead to the reduction of production efficiency,thus affecting the production of oil wells.In order to solve these problems,the causes of the leakage of shallow casing were analyzed in this paper,and some measures to prevent the leakage of casing was put forward.These measures not only take the wellbore structure and quality in well construction into account,but also take the quality of injected water,operation and daily maintenance in the production of oil and water wells into account.The leak locations were accurately determined in two injection wells,well Q1 and well J1,by using water injection profile and packer leak locating technology.In addition,by summarizing the characteristics of casing leakage in different wells and the lithology of lost zones,the corresponding plugging measures were adopted.Leakage of shallow casing in 7 wells were treated by plugging technology,which proved that comprehensive plugging technology has better plugging effect on casing leakage and high-pressure formation.The results show that water absorption profile leakage detection and packer leakage detection are still effective means for monitoring shallow casing leakage.Downhole television,ultrasonic imaging and other casing detection technologies are the future development direction.

关 键 词：套管漏失 动态监测 吸水剖面 封隔器找漏 复合封堵技术 注水井 

分 类 号：TE358[石油与天然气工程—油气田开发工程]