石油化工高等学校学报

石油化工高等学校学报 ›› 2021, Vol. 34 ›› Issue (5): 62-67.DOI: 10.3969/j.issn.1006-396X.2021.05.010

• 油气储运 • 上一篇    下一篇

旅大油田A井液控管线腐蚀分析及管材优选

辛野1(), 刘志龙1, 于晓涛1, 邹琦1, 吴春元2, 肖昌2, 苏高申2()   

  1. 1.中海油能源发展股份有限公司 工程技术分公司,天津 300450
    2.长江大学 化学与环境工程学院,湖北 荆州 434023
  • 收稿日期:2021-04-13 修回日期:2021-05-07 出版日期:2021-10-25 发布日期:2021-11-05
  • 通讯作者: 苏高申
  • 作者简介:辛野(1989⁃),男,硕士,工程师,从事海上稠油热采方面研究;E⁃mail:285586334@qq.com
  • 基金资助:
    国家科技重大专项(2016ZX05058?003?005);中海油能源发展科技项目(HFKJ?GJ201908)

Corrosion Analysis and Pipe Material Selection of Fluid Control Pipeline in A Well of Lüda Oilfield

Ye Xin1(), Zhilong Liu1, Xiaotao Yu1, Qi Zou1, Chunyuan Wu2, Chang Xiao2, Gaoshen Su2()   

  1. 1.Engineering Technology Branch of CNOOC Energy Development Co. Ltd. ,Tianjin 300450,China
    2.College of Chemistry and Environmental Engineering of Yangtze University,Jingzhou Hubei 434023,China
  • Received:2021-04-13 Revised:2021-05-07 Published:2021-10-25 Online:2021-11-05
  • Contact: Gaoshen Su

摘要:

旅大油田A井为稠油热采井,注350 ℃高温高压蒸汽,井下监测设备液控管线腐蚀严重。通过扫描电子显微镜(SEM)以及电子能谱分析(EDS)对现场液控管线腐蚀试样进行分析,对采出液水样进行离子及腐蚀性气体成分分析,得出该管线腐蚀主要原因是在高温、高压和高矿化度条件下的H2S腐蚀,并伴有氯离子腐蚀和少量CO2腐蚀。在模拟现场温度、压力和介质条件下,挑选316L、Inconel 625、P110、9Cr1Mo材质的试片,进行动态模拟腐蚀实验,用失重法对4种材料的腐蚀性能进行了评价。结果表明,在稠油热采环境中,Inconel 625材料抗温耐蚀效果最优。

关键词: 稠油热采, 腐蚀防护, 动态腐蚀实验, 硫化氢

Abstract:

Well A in Lüda oilfield is a thermal recovery well injecting with 350 ℃ high temperature and pressure steam for exploiting of heavy oil. The hydraulic control pipelines of the downhole monitoring equipments are corroded seriously. Scanning electron microscopy (SEM) and electron energy spectroscopy (EDS) were carried out for the corrosion test of hydraulic control pipelines. Meanwhile, the ion and corrosive gas compositions of produced water were analyzed. The results show that the main cause of the pipeline corrosion is from H2S corrosion under high temperature, pressure and salinity conditions, accompanied by a small amount of chlorine and CO2 corrosion. Under simulated site temperature, pressure and medium conditions, test pieces made of 316L, Inconel 625, P110 and 9Cr1Mo were selected and evaluated by dynamic simulation corrosion tests. Furthermore, weight loss method was used to evaluate the corrosion performance of the four materials. The results show that Inconel 625 material has the best corrosion resistance effect in heavy oil thermal recovery environment.

Key words: Heavy oil thermal recovery, Corrosion protection, Dynamic corrosion experiment, H2S

中图分类号: 

引用本文

辛野, 刘志龙, 于晓涛, 邹琦, 吴春元, 肖昌, 苏高申. 旅大油田A井液控管线腐蚀分析及管材优选[J]. 石油化工高等学校学报, 2021, 34(5): 62-67.

Ye Xin, Zhilong Liu, Xiaotao Yu, Qi Zou, Chunyuan Wu, Chang Xiao, Gaoshen Su. Corrosion Analysis and Pipe Material Selection of Fluid Control Pipeline in A Well of Lüda Oilfield[J]. Journal of Petrochemical Universities, 2021, 34(5): 62-67.

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