井下阴极保护和在线腐蚀监测技术研究应用  

Research and Application of Downhole Cathodic Protection and On-line Corrosion Monitoring Technology

作　　者：高宝元 王奕儒[3] Gao Baoyuan;Wang Yiru(Drilling and Production Engineering Technology Research Institute of China Petroleum Group Chuanqing Drilling Engineering Co.Ltd.,Xi an,710018,China;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi an,710018,China;Operation Zone 1 of Suligenan Operation Branch of Changqing Oilfield,Xi an,710018,China)

机构地区：[1]中国石油集团川庆钻探工程有限公司钻采工程技术研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]长庆油田苏里格南作业分公司作业一区,陕西西安710018

出　　处：《石油化工自动化》2022年第2期73-75,102,共4页Automation in Petro-chemical Industry

基　　金：2016—2017年度陕西省科学研究发展重点新产品计划——油水井套管防蚀阴极保护数字化远程监控节能柜项目(2016XCP-009)。

摘　　要：油水井管柱井下腐蚀损伤将严重降低管柱的结构强度、承受能力和可靠性,缩短管柱的使用寿命,增大运行风险,影响油水井运行安全。针对该问题进行了油水井管柱井下阴极保护和腐蚀在线监测技术研究,提出了一种油水井管柱井下阴极保护和腐蚀在线监测方法。现场应用表明:该方法耗电量小,保护距离长且效果好,初期投入费用低,能准确监测油水井井下管柱腐蚀状况和速率,可预测油水井管柱的安全使用寿命,可靠性、稳定性高。The downhole corrosion damage of oil-water well string will seriously reduce the structural strength, bearing capacity and reliability of the string, shorten the service life of the string, increase the operation risk and threaten the safety of oil-water wells. Aiming at the problem, the downhole cathodic protection and corrosion on-line monitoring technology of oil-water well string is studied, and a downhole cathodic protection and corrosion on-line monitoring method is proposed. The field application shows that the method has the characteristics of small power consumption, long protection distance, good effect and low initial investment cost. It can accurately monitor the corrosion status and rate of downhole pipe string in oil-water wells. It can predict the safe service life of oil-water well pipe string with high reliability and stability.

关 键 词：油水井管柱 阴极保护 腐蚀 在线监测 

分 类 号：TG174[金属学及工艺—金属表面处理] TP274[金属学及工艺—金属学]