M油田注水井油套管防腐选材研究  

Study on Anti-corrosion Material Selection of Casing and Tubing for Injection wells in M Oilfield

作　　者：刘海涵 黄传超 武丕烈 Liu Haihan;Huang ChuanChao;Wu Pilie(CNOOC Iraq Limited,Beijing 100028;EnerTech-Drilling&Production Co.,CNOOC,Tianjin 300452)

机构地区：[1]中国海油伊拉克有限公司,北京100028 [2]中国海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《石化技术》2021年第10期123-124,60,共3页Petrochemical Industry Technology

摘　　要：M油田注入水含有0.2ppm的溶解氧,Cl^(-)含量为155,000mg/L为研究优选M油田注水井适用该环境的油套管钢,在油田水处理单元的入口、出口处分别对13Cr和25Cr进行200天和100天的挂片测试,发现13Cr发生严重局部腐蚀且平均腐蚀速率高;25Cr平均腐蚀率较低,可满足使用要求,综合考虑经济性、耐蚀性,推荐25Cr作为注水井的油套管钢。The content of O_(2) in injected water of M oilfield is 0.2ppm and the concentration of Cl^(-)is 155,000 mg/L.In order to study and optimize the casing and tubing steels for injection wells in M Oilfield,13Cr and 25Cr coupons were tested in inlet and outlet of water injection system for 200 and 100 days.It was found that 13Cr steel had serious local corrosion and high general corrosion rates;however,the general corrosion rates of 25Cr steel were very low,which can meet the use requirement.Considering the economy and corrosion resistance,25Cr is recommended as the casing and tubing steels for injection wells.

关 键 词：注水井 现场试验 油管钢 点蚀 双相不锈钢 

分 类 号：TE983[石油与天然气工程—石油机械设备]