高温高压井筒腐蚀监测系统研制与应用  

Development and Application of High Temperature and High Pressure Wellbore Corrosion Probe Monitoring System

作　　者：龙武[1] 刘振东 张江江[1] 李芳[1] 曾德智[2] LONG Wu;LIU Zhendong;ZHANG Jiangjiang;LI Fang;ZENG Dezhi(Petroleum Engineering Technology Research Institute,Northwest Oilfield Company,SINOPEC,Urumqi,Xinjiang 830011,China;National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830011 [2]油气藏地质及开发工程全国重点实验室·西南石油大学,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2023年第6期147-156,共10页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金(51774249);四川省科技计划(21JCQN0066)。

摘　　要：为解决高温高压井筒油套环空腐蚀监测难题,基于电感腐蚀监测技术原理,采用多组测量试片串行连接、激励信号同步实施的方法,设计开发了耐温140℃、耐压70MPa、多通道同步监测油套管腐蚀的管状腐蚀探针监测系统,该探针监测装置与油管的连接方式采用卡接式连接,避免了装置焊接对油管腐蚀的影响。采用现场采出液在140℃、70MPa实验条件下,对该装置的耐温耐压性能和数据可靠性进行了测试,监测数据与高温高压腐蚀模拟结果偏差低于5%,耐温耐压性能良好。最后,对该腐蚀监测系统进行了现场应用测试,结果表明,研制的井筒腐蚀探针监测系统运行良好,监测数据与现场挂片相对误差为8.32%。该监测系统能够满足苛刻环境下井筒的腐蚀监测要求,为有效掌握井筒油套环空腐蚀状况和高温高压井筒的腐蚀监测提供了新的技术手段。In order to solve the problem of high-temperature and high-pressure wellbore annulus corrosion monitoring,based on the principle of inductive corrosion monitoring technology,a method of serial connection of multiple sets of measurement test strips and simultaneous implementation of excitation signals is designed and developed,which is a tubular corrosion probe monitoring system for simultaneous monitoring of tubing and casing corrosion with multiple channels.The connection between the probe monitoring device and the tubing adopts a snap-fit connection,avoids the impact of device welding on tubing corrosion.Under the experimental conditions of 140℃ and 70 MPa,the temperature and pressure resistance and data reliability of the device is tested using on-site produced fluid.The deviation between the monitoring data and the simulation results of high temperature and high pressure corrosion is less than 5%,and the temperature and pressure resistance is good.Finally,the corrosion monitoring system is tested on-site.The results show that the developed wellbore corrosion probe monitoring system works well,and the relative error between the monitoring data and the on-site coupon is 8.32%.It is concluded that the monitoring system can meet the requirements of wellbore corrosion monitoring in harsh environments,and provides a new technical means for effectively grasping the wellbore oil casing annulus corrosion status and high-temperature and high-pressure wellbore corrosion monitoring.

关 键 词：高温高压 油气井 油套环空 腐蚀监测 探针 

分 类 号：TE38[石油与天然气工程—油气田开发工程]