不锈钢材料在高含硫井口装置中的试验研究  

Experimental Study for Stainless-steel Materials in High-sulfur Petroleum Well-mouth Equipment

作　　者：于兴胜[1] 王向东[1] 孟庆昆[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《石油矿场机械》2007年第12期37-41,共5页Oil Field Equipment

摘　　要：针对我国油气田特别是四川气田H2S含量高,对井口装置腐蚀严重,容易发生突发事故的情况,选用了3种不锈钢材料135、2205、318进行H2S应力腐蚀试验分析。通过模拟四川气田基本情况,并参照NACE TM0177—1996标准溶液,利用U形弯曲浸泡试验、慢应变速率拉伸试验、电化学分析等方法,对3种材料应力腐蚀开裂进行了对比分析。试验分析表明,双相不锈钢2205具有良好的抗H2S应力腐蚀性能和良好的力学性能。Usually there is high-content of hydrogen-sulfide gas in China oil-gas field especially in Sichuan province; it brings serious corrosion to the equipment of the well head, so occasionally accident may happen easily. Three kinds of stainless steel materials： 135, 2205 and 318, were used to carry out experimental analysis of hydrogen-sulfide stress corrosion. Via simulation of Sichuan gas field environment, refer to NACE TM0177--1996 standard solution; U-bend is tested in submerge experiment, slow-strain-rate stretch experiment and electrochemical analysis; and comparative analysis of stress corrosion cracking for three kinds of materials were accomplished. Experimental analysis shows： Biphase stainless steel 2205 possesses good performance of resist hydrogen sulfide stress corrosion and has good mechanical properties.

关 键 词：井口装置 突发事故 H2S应力腐蚀开裂 试验分析 双相不锈钢2205 

分 类 号：TE931.1[石油与天然气工程—石油机械设备]