注采井连续油管投送堵塞器技术研发及应用  

Development and Application of Coiled Tubing Plug Delivering Technology in Injection-Production Wells

作　　者：蔡建平 尹国栋 姜涛 杨彧 罗一峰 赵良骢 CAI Jianping;YIN Guodong;JIANG Tao;YANG Yu;LUO Yifeng;ZHAO Liangcong(Downhole Service Company of Jidong Oilfield Company,Tangshan,Hebei 063200,China;PetroChina Liaohe Oilfield Company Engineering Technology Department,Panjin,Liaoning 124010,China;Gas Storage Construction Project Department of Jidong Oilfield,Tangshan Hebei 063200,China;Petro-king Energy Technology(Huizhou)Ltd.,Huizhou,Guangdong 516000,China;Tianyou Jintie Logistics Co.,Ltd.,Tianjin 300143,China)

机构地区：[1]中国石油冀东油田公司井下作业公司,河北省唐山市063200 [2]中国石油辽河油田公司辽河工程技术分公司 [3]中国石油冀东油田公司储气库建设项目部 [4]百勤能源科技(惠州)有限公司 [5]天佑津铁物流有限公司

出　　处：《钻采工艺》2025年第2期206-211,共6页Drilling & Production Technology

基　　金：中国石油天然气集团公司科学研究与技术开发项目“全系列连续油管作业技术推广”(编号:2022ZT01)。

摘　　要：针对JD储气库井井斜大、水平井段长,永久气密封封隔器不能有效座封的问题,设计研发了在注采井连续油管投送堵塞器技术,该技术通过自主设计研发的扶正器、万向节、直井加长杆、坐落短节等辅助工具以及优化改进了2种堵塞器结构,解决了常规钢丝投堵时,堵塞器受井斜大、水平段长度长影响,堵塞器无法输送到位的问题。通过现场应用,已经成功施工12井次,成功率100%,施工最高深度4 447.8 m,施工最大井斜78.51°,最高井口压力20.8 MPa。现场应用结果表明,连续油管投捞堵塞器技术能够有效解决注采井由于井斜大造成的气密封封隔器座封困难等技术难点。该项工艺可靠性高、施工周期短、清洁高效,在大斜度储气库注采井完井管柱应用方面具有广阔推广前景。The permanent gas seal packer cannot effectively be set due to the large well inclination and long horizontal section in the gas storage well of Jidong Oilfield,a coiled tubing plug feeding technology is developed in injection-production wells.Through the independent development of the centralizer,universal joint,vertical well extension bar,set sub and other auxiliary tools,and optimization of two kinds of plug structure,the problem that the plug can not be delivered in place due to the long horizontal section of the conventional wire plugging is resolved.At present,it has been successfully applied in 12 wells with a success rate of 100%.The maximum construction depth is 4447.8 m,the maximum construction inclination is 70.16°,and the maximum wellhead pressure is 20.8 MPa.The application results show that the coiled tubing plug delivering technology can effectively solve the technical difficulties caused by large well inclination in injection and production wells,such as the difficulty of setting the gas seal packer.This technology is characterized by high reliability,short construction period,cleanliness and efficiency,and it has broad prospects for promotion in the application of completion string for injection and production wells in high inclination gas storage facilities.

关 键 词：储气库 注采井 连续油管 堵塞器 投送 坐落短节 

分 类 号：TE37[石油与天然气工程—油气田开发工程] TE358