《油套管腐蚀机理硕士论文》由会员分享，可在线阅读，更多相关《油套管腐蚀机理硕士论文（63页珍藏版）》请在金锄头文库上搜索。
1、摘 要雅克拉、大涝坝凝析气田油套管在含 CO2、Cl等多种腐蚀介质的井下高温高压多相环境中服役时往往发生腐蚀穿孔现象，导致管柱掉井和油气泄露，甚至引发井喷等恶性事故，随着该油气田的进一步开发，腐蚀问题将会更加突出。本文通过调研国内外类似油气田腐蚀研究与防腐措施及工艺现状了解国内外油气田腐蚀类型、特点、方式及机理与防腐措施研究现状，分析了雅克拉大涝坝井下油套管腐蚀类型、失效原因，研究了雅克拉大涝坝凝析气田井下油套管腐蚀机理与规律，进行了 P110、13Cr和 HP13Cr 三种材料相关的质量检测和评估，对雅克拉-大涝坝凝析气田井下管柱腐蚀进行评价与选材，筛选评价了常用的抗 CO2腐蚀缓蚀剂，制定
2、了雅克拉-大涝坝凝析气田防腐蚀措施选用原则，并针对雅克拉大涝坝气田井下油套管防腐蚀措施的可行性和经济性进行了评估与优选。最终提出了雅克拉大涝坝气田采用 XYH-1 型缓蚀剂；若气井寿命在出现腐蚀后（含水率超过 10）小于 5 年，应采用普通油套管材料加缓蚀剂；若气井寿命在出现腐蚀后（含水率超过 10）大于 5 年，应采用普通油套管材料加 TK2000 环氧酚醛涂层的防腐措施。关键词： 油套管；腐蚀机理；评估；优选AbstractJacques - DaLaoBa condensate oil field annulus, containing CO2, Cland other corrosiv
3、e medium high temperature and high pressure multi-phase downhole environment often served the phenomenon of corrosion perforation, resulting in oil and gas wells and pipe leaked out, and may even trigger blowout accidents, etc., with the further development of the field, the corrosion problem will b
4、ecome more prominent. In this paper, similar to oil and gas research at home and abroad corrosion research and anti-corrosion measures and process oil and gas fields at home and abroad to understand the status quo of corrosion types, characteristics, methods and mechanism of anti-corrosion measures
5、and research, an analysis of Jacques - DaLaoBa oil annulus downhole corrosion type, the reasons for failure studied Jacques - DaLaoBa condensate oil field downhole annulus corrosion mechanism and response, a P110, 13Cr and three HP13Cr material testing and evaluation of the quality of Jacques - DaLa
6、oBa pipe downhole gas condensate field column to evaluate the corrosion and material selection, screening evaluation of the commonly used anti-CO2 corrosion inhibitor formulated Jacques - DaLaoBa gas condensate field selection of the principle of anti-corrosion measures, and for Jacques - DaLaoBa oi
7、l field downhole annulus anti-corrosion of the feasibility and economic evaluation and optimization carried out. Jacques made the final - major flood dam XYH-1 gas field, the use of corrosion inhibitor; if gas after corrosion in the event of life (more than 10% moisture content) is less than 5 years
8、 should be used in ordinary oil annulus material plus inhibitor; If the gas well after corrosion in the event of life (more than 10% moisture content) is greater than 5 years should be used in ordinary oil annulus material TK2000 increase the anti-corrosion coating epoxy novolac measures.Key words：a
9、nnulus；corrosion mechanism；assess；optimiseI目目 录录第 1 章 绪论.11.1 研究的目的与意义.11.1.1 研究背景 .11.1.2 研究的目的与意义 .11.2 国内外研究现状.11.3 主要研究内容及技术路线.21.4 研究主要结论.3第 2 章 雅克拉-大涝坝气田腐蚀类型及失效原因分析.42.1 失效样品的测试与分析.42.1.1 宏观分析 .42.1.2 腐蚀产物分析 .42.2 腐蚀失效分析.52.2.1 腐蚀产物分析 .52.2.2 腐蚀类型分析 .62.3 综合分析.62.4 小结.7第 3 章 雅克拉大涝坝井下油套管腐蚀机理与规律.83.1 实验材料及参数.83.1.1 试验材料 .83.1.2 实验内容及参数选择 .83.2 高温高压模拟腐蚀试验结果及分析.103.2.1 不同因素变化对材料腐蚀速率的影响 .103.2.2 不同影响因素的作用大小分析 .
