摘要
二连盆地低煤阶煤层气井煤层厚度比较厚,一般需要进行分层压裂。在分层压裂过程中,分压管柱主要由砂埋管柱、砂卡管柱、封隔器无法解封、套管变形等几种原因造成管柱遇卡经常发生,如何能及时、快捷、有效的处理遇卡事故一直是井下作业工程的重要课题。在霍煤1井分压管柱解卡现场实践中,利用小修设备处理井下事故,经过多方面的井下分析论证,有针对性的制定技术措施,实现高效解卡打捞,为今后的解卡提供有效借鉴。
Since the coal seam thickness of the CBM wells in Erlian Basin is thick,the separate layers fracturing is necessary for operation. During the process of separate layers fracturing,stuck occurs frequently in the string due to sand bury,sand sticking,packer deblocking failure,casing deformation,etc. How to timely,quickly and effectively handle the sticking accidents is important subject in underground operation engineering. In the stuck freeing practice for string of separate layers fracturing in the No. 1 Huomei Well,minor repair equipment is used to handle the underground accidents. Through the comprehensive analysis and demonstration,specific technical measures are developed,and effective unfreezing and fishing is realized,which could provide effective reference for future practice.
作者
姚晓军
孙泽良
刘斌
高利平
周帅
YAO Xiaojun;SUN Zeliang;LIU Bin;GAO Liping;ZHOU Shuai(PetroChina Huabei Oilfield Company,Hebei 062552)
出处
《中国煤层气》
2018年第6期18-20,共3页
China Coalbed Methane
基金
国家科技重大专项"大型油气田开发-沁水盆地高煤阶煤层气高效开发示范工程"(2017ZX05064)
关键词
分层压裂
管柱解卡
工艺
煤层气井
Separate layers fracturing
stuck freeing of string
technology
CBM well
