渤海湾油套同压气井腐蚀速率的预测方法研究  

Research on Prediction Method of Corrosion Rate of Gas Wells with Same Pressure of Tubing and Casing in Bohai Oilfield

作　　者：和鹏飞 宋峙潮 万祥 徐彤 曹渝林 HE Pengfei;SONG Zhichao;WAN Xiang;XU Tong;CAO Yulin(CNOOC(China)Co.,Ltd.,Beijing 100007,China;Engineering Technology Branch,CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China;School of Earth Sciences,China Univerisity of Petroleum,Beijing 102249,China)

机构地区：[1]中海石油(中国)有限公司,北京100007 [2]中海油能源发展股份有限公司工程技术分公司,天津300452 [3]中国石油大学(北京)地球科学学院,北京102249

出　　处：《材料保护》2023年第9期177-181,共5页Materials Protection

基　　金：国家重点研发计划资助“海洋石油天然气开采事故防控技术研究及工程示范”(2017YFC0804500)资助。

摘　　要：渤海E油田21世纪初有大批油气井投产,随着该油田生产进入中后期,气井普遍存在环空带压现象,严重的可能发展为油套同压,带来了严重的管材腐蚀危害,会造成油气泄露、环境污染等严重的安全问题。为保障老井生产安全性、突破增产作业中的技术局限,调研了不同因素对油气井管体腐蚀速率的影响,统计了渤海E油田5口气井运行情况,探讨了可能造成腐蚀的介质种类,使用不同方法检测了油套管体完整性,结合室内实验结果及实际工况,预测了上述5口气井油套管的腐蚀速率,为判断油套管腐蚀程度提供了依据。At the beginning of the 21st century,a large number of oil and gas wells were put into operation in Bohai E oilfield.With the produc-tion of the oilfield entering the middle and late stage,the phenomenon of annulus pressure is common in gas wells,severe situations may devel-op into same pressure of tubing and casing,causing serious pipe corrosion hazards and serious safety issues such as oil and gas leakage and en-vironmental pollution.In order to ensure the production safety of old wells and break through the technical limitations in stimulation operation,in this paper the influence of different factors on the corrosion rate of oil and gas well tubing was investigated,the statistics on the operation of five gas wells in Bohai E oilfield were conducted,the types of media that might cause corrosion were discussed.The integrity of the oil casing body was tested using different methods.Based on indoor experimental results and actual conditions,the corrosion rate of the oil casing in the above five gas wells was predicted,which would provide a basis for determining the degree of oil casing corrosion.

关 键 词：气井 渤海湾 油套同压 腐蚀速率 预测 油管腐蚀 套管腐蚀 

分 类 号：TG172[金属学及工艺—金属表面处理]