引用本文:袁曦,蒙恬,石磊,张强,谷坛,肖杰,等. L245钢在气田模拟水溶液中的氢渗透行为研究[J]. 石油与天然气化工, 2016, 45(2): 55-57.
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L245钢在气田模拟水溶液中的氢渗透行为研究
袁曦1,蒙恬2,石磊3,张强1,谷坛1,肖杰1,江晶晶1,汪枫1,易大森4
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
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(C0),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(C0)与充氢电流(I)呈线性关系,即C0 =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。 
关键词:  L245钢  氢致开裂  原子氢浓度  原子氢渗透 
DOI：10.3969/j.issn.1007-3426.2016.02.012
分类号:TE988.2
基金项目:国家863项目“酸性油气田管道腐蚀安全智能监测系统”(2007AA06Z206)。
Hydrogen permeation of L245 pipeline steel in hydrogen sulfide-saturated aqueous solution of natural gas field
Yuan Xi1, Meng Tian2, Shi Lei3, Zhang Qiang1, Gu Tan1, Xiao Jie1, Jiang Jingjing1, Wang Feng1, Yi Dasen4
(1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gasfield Company, Chengdu 610213, China;2. College of Oil and engineering, Southwest Petroleum University, Chengdu 610500, China;3. Northeastern Sichuan Project Department, PetroChina Southwest Oil and Gasfield Company, Dazhou 636164, China;4. China Petroleum and Natural Gas Company of the Seventh Construction, Qingdao 266300, China)
Abstract:
By an electrochemical method of Devnathan-Stachurski, hydrogen permeation(D) and hydrogen content(C0) 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(C0) is directly proportional to cathodic current(I), i.e,C0 =0.63+0.12 I; inhibitor CT2-19 is a good inhibitor for inhibiting hydrogen permeation at the experimental concentration.
Key words:  L245 pipeline steel  hydrogen induced cracking  hydrogen concentration  hydrogen permeation