S135钻杆钢在H2S环境中的腐蚀疲劳行为
Corrosion Fatigue Behavior of S135 Drill Pipe Steel in H2S Enviornment
摘 要
对S135钻杆钢在空气和H2S环境中进行了不同应力幅下的疲劳试验，得到了不同条件下的疲劳寿命，并应用回归分析方法得到了该钻杆钢在不同环境中的疲劳寿命公式，分析了其疲劳断裂机制。结果表明：在空气环境中，试验钢呈现明显的疲劳极限特征；在H2S环境中，相同当量应力幅下试验钢的疲劳寿命比在空气环境中的低，且在很低的当量应力幅下仍会发生断裂，不存在疲劳极限；在不同环境和不同当量应力幅下，试验钢的疲劳裂纹均萌生于试样表面或靠近表面处，裂纹源区以解理断裂为主；在空气环境中，裂纹扩展区以疲劳条带为主要特征，在H2S环境中，裂纹扩展区以解理平面和解理台阶为主要特征，在其解理平面上存在大量的二次裂纹，具有氢脆断裂的特征。
H2S环境
疲劳寿命
疲劳条带
解理
drill pipe steel
H2S environment
fatigue life
fatigue striation
cleavage
Abstract
Fatigue tests under different stress amplitude were conducted on S135 drill pipe steel in air and H2S environments, and the fatigue lives under different conditions were obtained. The fatigue life formulas of the drill pipe steel in different environments were obtained by a data regression analysis method, and the fatigue fracture mechanism was analyzed. The results show that the tested steel had an obvious characteristic of fatigue limit in the air environment. The fatigue lives of tested steel in the H2S environment were lower than those in the air under the same equivalent stress amplitude, the fracture happened under relatively low equivalent stress amplitude and no fatigue limit existed. The fatigue cracks in the tested steel were all initiated at or near the surface in different environments and under different equivalent stress amplitude, and the crack initiation region exhibited mainly cleavage fracture. The crack propagation region showed a main characteristic of fatigue striations in the air while of cleavage fracture and cleavage steps in the H2S environment. On the cleavage fracture surface existed lots of second cracks, indicating a characteristic of hydrogen embrittlement fracture.
中图分类号 TG172 DOI 10.11973/jxgccl201706011
所属栏目 材料性能及应用
基金项目 国家质检公益性行业科研专项经费资助项目（201510205-03）；陕西省教育厅专项科研计划项目（15JK1577）；西安石油大学青年科技创新基金资助项目（2015QN014）；西安石油大学材料科学与工程省级优势学科资助项目；2015年省级大学生创新创业训练计划项目
收稿日期 2016/3/18
修改稿日期 2017/4/13
网络出版日期
作者单位点击查看
备注雒设计(1979-),男,陕西礼泉人,副教授,博士
引用该论文: LUO Sheji,WEN Ninghua,HAN Lihong. Corrosion Fatigue Behavior of S135 Drill Pipe Steel in H2S Enviornment[J]. Materials for mechancial engineering, 2017, 41(6): 44～48
雒设计,温宁华,韩礼红. S135钻杆钢在H2S环境中的腐蚀疲劳行为[J]. 机械工程材料, 2017, 41(6): 44～48
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参考文献
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【14】雒设计,赵康,王荣.不同应力比下S135钻杆钢疲劳裂纹的扩展行为[J].机械工程材料,2013,37(7):72-76.
【15】黄本生,陈想,陈勇彬,等.石油钻杆材料G105在不同条件下的疲劳断裂[J].材料工程,2016,44(2):107-114.
【16】林元华,潘杰,刘婉颖,等.硫化氢环境下G-105和S-135钻杆的低载多冲疲劳性能测试[J].石油钻采工艺,2016,38(1):59-63.
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【2】雒设计,赵康,王荣.S135钻杆钢的拉扭复合加载疲劳行为研究[J].材料工程,2013,41(1):40-44.
【3】RAMGOPAL T, GUI F, HAWK J, et al. Corrosion fatigue performance of high strength drill pipe in sour environments[C]//Corrosion 2011. Houston:NACE International, 2011:NACE-11108.
【4】FU C Y, ZHENG J S. Corrosion fatigue behavior of carbon steel in drilling fluids[J]. Corrosion, 1998,54(8):651-656.
【5】黄本生,卢曦,刘清友.石油钻杆H2S腐蚀研究进展及其综合防腐[J].腐蚀科学与防护技术,2011,23(3):205-208.
【6】颜昌茂,张国正,张春婉.φ127 mm×9.19 mm G105钻杆管体刺穿原因分析[J].热加工工艺,2013,42(8):229-233.
【7】叶顶鹏,王瑞成,崔顺贤,等.φ127 mm S135钻杆刺漏失效分析[J].理化检验-物理分册,2009,45(8):514-516.
【8】朱丽霞,仝珂,翟婷婷,等.G105钻杆管体刺穿失效分析[J].理化检验-物理分册,2010,46(4):259-262.
【9】HANSFORD J E, LUBINSKI A. Cumulative fatigue damage of drill pipe in dog-legs[J]. Journal of Petroleum Technology, 1966, 18(3):359-363.
【10】万里平,孟英峰,杨龙,等.钻柱失效原因及预防措施[J].钻采工艺,2006,29(1):57-59.
【11】ZIOMEKMOROZ M.Environmentally assisted cracking of drill pipes in deep drilling oil and natural gas wells[J]. Journal of Materials Engineering and Performance,2012,21(6):1061-1069.
【12】QI Y M, LUO H Y, ZHENG S Q, et al. Comparison of tensile and impact behavior of carbon steel in H2S environments[J]. Materials and Design, 2014, 58(6):234-241.
【13】王霞,钟水清,马发明,等.含硫气井钻井过程中的腐蚀因素与防护研究[J].天然气工业,2006,26(9):80-84.
【14】雒设计,赵康,王荣.不同应力比下S135钻杆钢疲劳裂纹的扩展行为[J].机械工程材料,2013,37(7):72-76.
【15】黄本生,陈想,陈勇彬,等.石油钻杆材料G105在不同条件下的疲劳断裂[J].材料工程,2016,44(2):107-114.
【16】林元华,潘杰,刘婉颖,等.硫化氢环境下G-105和S-135钻杆的低载多冲疲劳性能测试[J].石油钻采工艺,2016,38(1):59-63.
【17】ZHENG X L, LU B T.On a fatigue formula under stress cycling[J]. International Journal of Fatigue, 1987,9(3):169-174.
【18】王荣.腐蚀疲劳裂纹扩展的断裂模型[J].中国腐蚀与防护学报,1998,18(2):88-94.
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