Corrosion Behavior of G105 Drill Pipe in Solution with Different Hydrogen Ion Concentrations
摘 要
通过慢应变速率拉伸试验(SSRT)与电化学试验, 研究了G105钻杆在不同氢离子浓度HAc/NaAc缓冲溶液中的腐蚀行为, 研究了SSRT试样的断口形貌及应力腐蚀机理。结果表明: 随着氢离子浓度增大(即随着pH减小), G105钻杆的应力腐蚀敏感性和自腐蚀电流密度逐渐增大; 断口形貌均呈脆性断裂, 主裂纹有明显的分支裂纹; 应力腐蚀机理为阳极溶解型, 酸性溶液中的部分氢原子进入裂纹, 加速了应力腐蚀开裂的进程。
Abstract
The corrosion behavior of G105 drill pipe was investigated by slow strain rate tension (SSRT) and electrochemical test in HAc/NaAc buffer solution with different hydrogen ion concentrations. The fracture morphology and the mechanism of stress corrosion of SSRT sample were studied.The results show that with the increase of hydrogen ion concentration, the stress corrosion sensitivity and corrosion current density of G105 drill pipe increased gradually. The fracture morphology exhibited brittle characteristic and the main crack showed obvious branch cracks. The mechanism of stress corrosion was anodic dissolution, a part of hydrogen atoms in the acidic solution entered the cracks and accelerated the process of stress corrosion cracking.
中图分类号 TG174.1
所属栏目 材料性能及其应用
基金项目 四川省高等学校油气田材料重点实验室资助项目(13YQT026)
收稿日期 2013/7/9
修改稿日期 2014/5/1
网络出版日期
作者单位点击查看
备注黄本生(1969-), 男, 安徽巢湖人, 教授, 博士。
引用该论文: HUANG Ben-sheng,LU Dong-hua,JIANG Tao,ZHANG Jun,NING Yang-zhong. Corrosion Behavior of G105 Drill Pipe in Solution with Different Hydrogen Ion Concentrations[J]. Materials for mechancial engineering, 2014, 38(9): 81~84
黄本生,卢东华,姜涛,张俊,宁扬忠. G105钻杆在不同氢离子浓度溶液中的腐蚀行为[J]. 机械工程材料, 2014, 38(9): 81~84
被引情况:
【1】姬丙寅,史学芳,史交齐,王绪华,梁裕如, "某油井套管接箍发生开裂的原因",机械工程材料 40, 101-105(2016)
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参考文献
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【3】WARKE W R.油田材料及设备的失效分析[J].石油专用管, 1996, 4(4): 9-14.
【4】MA H, CHENG X, LI G, et al. The influence of hydrogen sulfide on corrosion of iron under different conditions [J].Corros Sci, 2000, 42:1669-1683.
【5】ALAMILLA J L, ESPINOSA-MEDINA M A. Modelling steel corrosion damage in soil environment[J].Corrosion Science, 2009,51(11):2628-2638.
【6】MELCHERS R E. Early corrosion of mild steel in seawater[J].Corrosion Science,2005,47(7):1678-1693.
【7】杨勇进,李宗田,庞晓露.石油用S135钻杆钢氢渗透与氢致滞后开裂行为[J]. 腐蚀与防护,2009,30(11): 787-789.
【8】熊建.G105钢级钻杆在含有H2S环境下的腐蚀研究[J].钢管, 2010, 38(3): 28-32.
【9】李方坡,刘永刚,林凯.G105油井钻杆失效分析[J].金属热处理,2009,34(10): 94-96.
【10】张春婉,张国正,董会.S135钻杆本体刺穿失效分析[J].石油矿场机械, 2009,38(12): 65-75.
【11】陈长青,李齐富.127 mm S135型钻杆管体刺穿失效分析[J].石油矿场机械,2013,42(1):59-61.
【12】吕拴录,骆发前,周杰,等.钻杆接头纵向裂纹原因分析[J].机械工程材料, 2006,30(4):95-97
【13】FMC Corp. Corrosion inhibiting solution for protecting metal surfaces in oil or gas drilling systems: British,WO 200146552-A1[P].2002-10-04.
【14】MOE B G R, JOHNSON C K. How to analyze/handle tubular corroison problem[J].World Oil,2002,223(4):86-88.
【15】马桂君,杜敏,刘福国.G105钻具钢在含有溶解氧条件下的腐蚀规律[J].中国腐蚀与防护学报,2008,28(2): 108-110.
【16】李磊,刘文红,宋生印.X95钢级钻杆开裂原因分析[J].机械工程材料,2011,35(11):109-112.
【17】吕拴录,姬丙寅,骆发前,等.139.7 mm加重钻杆外螺纹接头断裂原因分析[J].机械工程材料,2009,33(10):99-102.
【18】董超芳,关矞心,程学群, 等.pH值对高温高压水中304L不锈钢应力腐蚀开裂的影响[J].北京科技大学学报,2010,32(12):1569-1573.
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