分布式光纤储气库井找漏技术应用  

Application of Distributed Optical-Fiber Leak-Finding Technology in Gas Storage Well

作　　者：宁卫东 陈金宏 朱涵斌 李剑 孟骞 刘荣芳 NING Weidong;CHEN Jinhong;ZHU Hanbin;LI Jian;MENG Qian;LIU Rongfang(Huabei Branch,China National Logging Corporation,Renqiu,Hebei 052552,China;Geological Research Institute,China National Logging Corporation,Xi’an,Shaanxi 710077,China;Well Logging Key Laboratory,China National Petroleum Corporation,Xi’an,Shaanxi 710077,China)

机构地区：[1]中国石油集团测井有限公司华北分公司,河北任丘052552 [2]中国石油集团测井有限公司地质研究院,陕西西安710077 [3]中国石油天然气集团有限公司测井重点实验室,陕西西安710077

出　　处：《测井技术》2022年第5期638-642,共5页Well Logging Technology

基　　金：中国石油天然气集团有限公司前瞻性基础性项目课题“光纤成像测井技术研究”(2021DJ3803)。

摘　　要：储气库井投产运行后,在交变应力载荷长期作用下,井筒密闭性失效,从而引起储气库井环空带压,对储气库的安全运行构成威胁。基于环空带压机理分析,阐述了储气库井环空带压的产生原因,总结了多层管柱条件下分布式光纤检测的步骤和方法。通过对比分析传统测量和分布式光纤检测的特点,确立了环空带压检测设计流程及监测方案设计原则。储气库井多重环空带压检测的成功实施,验证了分布式光纤检测不同类型漏失的可靠性,为合理制定环空带压治理方案提供了充分依据。After the gas storage well is put into operation,wellbore tightness will fail under the long-term alternating stress loads.Thus,the annulus pressure of gas storage well is caused,which threatens the safe operation of the gas storage.Based on the analysis of annulus pressure mechanism,we demonstrate the causes of annulus pressure in gas storage well in this paper,and summarizes the detection methods under the condition of multi-layer string.After comparing and analyzing the characteristics of traditional measurement and distributed optical fiber detection,the design process of annular pressure detection and the design principle of monitoring scheme are established.The successful implementation of multiple annulus pressure detection in gas storage well verifies the reliability of distributed optical fiber detection for different types of leak,and provided sufficient basis for reasonably formulating annulus with pressure treatment schemes.

关 键 词：分布式光纤 储气库 环空带压 微渗漏 

分 类 号：P631.84[天文地球—地质矿产勘探]