引用本文:杜强,刘振东,刘奇林,张林,康志勤,何奇垚,等. 酸性环境下高强度油套管钢氢损伤行为研究[J]. 石油与天然气化工, 2023, 52(2): 110-115.
【打印本页】   【HTML】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 955次   下载 349次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
酸性环境下高强度油套管钢氢损伤行为研究
杜强1,刘振东2,刘奇林1,张林3,康志勤4,何奇垚2,曾德智2
1.中国石油西南油气田公司川西北气矿;2.油气藏地质及开发工程国家重点实验室·西南石油大学 ;3.中国石油西南油气田公司工程技术研究院;4.中国石油西南油气田公司天然气研究院
摘要:
目的 为合理选择超深含硫气井油套管材质,找到了酸性环境下氢对高强度油套管钢拉伸性能的损伤规律。方法 通过电化学充氢实验、MTS拉伸测试及断口微观形貌分析,研究3种高强度钢材的氢损伤行为,首先对材料的基本理化性能进行分析,然后采用恒电流仪进行充氢实验,最后通过MTS拉伸测试和断口形貌分析,判断充氢对钢材的拉伸力学性能的影响。结果 充氢后,3种钢材的拉伸力学性能均出现了明显降低,表明3种钢材均发生了塑性损伤,且钢材强度越大,降低幅度越大,表明材料的氢脆敏感性越强,材料的抗氢损伤性能越低。结论 采用的高强度钢氢损伤评价方法可为酸性环境下油井管材适用性评价提供技术借鉴。 
关键词:  酸性环境  氢损伤  力学性能  高强度钢 
DOI：10.3969/j.issn.1007-3426.2023.02.018
分类号:
基金项目:国家自然科学基金“静载、振动与腐蚀作用下H2S/CO2气井完井管柱螺纹密封面的力化学损伤机制研究”(51774249)
Research on hydrogen damage behavior of high strength oil casing steel in sour gas environment
Du Qiang1, Liu Zhendong2, Liu Qilin1, Zhang Lin3, Kang Zhiqin4, He Qiyao2, Zeng Dezhi2
1. Northwest Sichuan Gas District of PetroChina Southwest Oil & Gasfield Company, Mianyang, Sichuan, China;2. State Key Laboratory of Oil & Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu, Sichuan, China;3. Engineering Technology Research Institute of PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;4. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China
Abstract:
Objective To investigate the effects of hydrogen charging on the hydrogen damage behavior of tubes in sour gas environment, the tensile mechanical properties of three high-strength steels before and after hydrogen charging should be evaluated. Methods The hydrogen damage behavior of the three high-strength steels was investigated by electrochemical hydrogen charging experiments, MTS tensile testing and fracture microscopic morphological analysis. Results The results showed that the tensile mechanical properties of the three steels were significantly reduced after hydrogen charging, indicating that plastic damage occurred in all three steels, and the greater the strength of the steel, the greater the reduction；and the stronger the hydrogen embrittlement of material, the lower the hydrogen damage resistance of material. Conclusion The hydrogen damage evaluation method for high-strength steel used in this article can provide a technical reference for evaluating the suitability of oil well pipes in sour gas environment.
Key words:  sour gas environment  hydrogen damage  mechanical property  high-strength steel