L245钢在气田模拟水溶液中的氢渗透行为研究  

Hydrogen permeation of L245 pipeline steel in hydrogen sulfide-saturated aqueous solution of natural gas field

作　　者：袁曦[1] 蒙恬 石磊 张强[1] 谷坛[1] 肖杰[1] 江晶晶[1] 汪枫[1] 易大森 

机构地区：[1]中国石油西南油气田公司天然气研究院 [2]西南石油大学石油与天然气工程学院 [3]中国石油西南油气田公司川东北天然气项目部 [4]中国石油天然气第七建设公司

出　　处：《石油与天然气化工》2016年第2期55-57,共3页Chemical engineering of oil & gas

基　　金：国家863项目"酸性油气田管道腐蚀安全智能监测系统"(2007AA06Z206)

摘　　要：采用Devnathan-Stachurski双电解池技术,在饱和硫化氢的气田模拟水溶液中,测定了不同条件下L245钢的扩散系数(D)和可扩散原子氢浓度(C_0),研究了缓蚀剂CT2-19对原子氢渗透的影响。结果表明,在试验条件下,L245钢可扩散原子氢浓度(C_0)与充氢电流(I)呈线性关系,即C_0=0.63+0.12I;缓蚀剂CT2-19在试验浓度下对L245钢原子氢渗透有明显的抑制作用。By an electrochemical method of Devnathan-Stachurski,hydrogen permeation（D）and hydrogen content（C_0）in L245 pipeline steel during cathodic charging with hydrogen were measured,and the effect of inhibitor CT2-19 for L245 pipeline steel hydrogen permeation was evaluated.Experimental results showed that during dynamically charging with hydrogen of L245 pipeline steel in field simulation solution,the concentration of diffusible hydrogen（C_0）is directly proportional to cathodic current（I）,i.e,C_0=0.63＋0.12 I;inhibitor CT2-19 is a good inhibitor for inhibiting hydrogen permeation at the experimental concentration.

关 键 词：L245钢 氢致开裂 原子氢浓度 原子氢渗透 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]