RTTS安全接头脱手解卡技术  

Releasing stuck technology for RTTS safety joint

作　　者：赵宇光 ZHAO Yuguang(Testing Branch,CNPC Great Wall Drilling Corporation,Beijing 100101,China)

机构地区：[1]中国石油集团长城钻探工程有限公司测试公司

出　　处：《油气井测试》2019年第3期21-25,共5页Well Testing

基　　金：中国石油集团长城钻探工程有限公司科技研究项目“海外复杂油气井测试工艺技术研究及应用”(GWDC201802-05)

摘　　要：APR测试施工过程中,由于井筒质量、井下工具、施工工艺等因素造成管柱被卡,尝试管柱整体解卡不成功时,优选采取将RTTS封隔器以上的RTTS安全接头进行脱手解卡措施,提出安全接头以上管柱,使留在井筒内的管柱工具最少,以便后续处理。结合工作原理和现场案例,完善了RTTS安全接头脱手作业操作程序,现场2口井按照此操作程序实现了RTTS安全接头脱手,施工成功率100%,为同类APR测试管柱解卡作业提供了技术借鉴。During APR testing,pipe string would be stuck because of wellbore quality,downhole tools,construction technology and other factors.When the attempt of releasing stuck of pipe string was unsuccessful,it was preferable to select the RTTS safety joint above RTTS packer for releasing stuck and put forward the pipe string above the safety joint,so as to minimize the string tools left in the wellbore for subsequent treatment.Combining with working principle and field case,the operation procedure of RTTS safety joint release operation was improved.According to this operation procedure,two wells in the field realized the release of RTTS safety joint,and the construction success rate was 100%.It provided technical reference for releasing stuck of APR test string.

关 键 词：钻柱地层测试 RTTS安全接头 封隔器遇卡 脱手 解卡 操作方法 

分 类 号：TE353[石油与天然气工程—油气田开发工程]