西南石油大学学报(自然科学版) ›› 2005, Vol. 27 ›› Issue (1): 75-78.DOI: 10.3863/j.issn.1000-2634.2005.01.020

• 石油机械工程及其它 • 上一篇    下一篇

超高压高温CO腐蚀研究理论探讨

李春福王斌2 代家林2 张颖2 李松霞 罗平亚

  

  1. 1.油气藏地质及开发工程;2.西南石油学院材料科学与工程学院
  • 收稿日期:2004-02-23 修回日期:1900-01-01 出版日期:2005-02-20 发布日期:2005-02-20
  • 通讯作者: 李春福

Study of Carbon Dioxide Corrision Mechanism in High Pressureand High Temperature

LI Chun-fu1 WANG Bin2 DAI Jia-lin2 et al   

  1. Southwest Petroleum Institute, Chengdu Sichuan,610500
  • Received:2004-02-23 Revised:1900-01-01 Online:2005-02-20 Published:2005-02-20
  • Contact: LI Chun-fu

摘要:

在分析油气藏及油气井压力漏斗中的CO存在形式基础上,对CO对油气井管柱钢材腐蚀体系进行了理论分析,提出了在油气藏深处及油气井管柱压力漏斗中CO处于超临界流体时腐蚀体系采用体系CO摩尔含量及在总压条件下CO在油水介质中分配系数进行腐蚀历程描述的理论概念,并对超临界流体CO腐蚀研究提出了相应方向。

关键词: CO腐蚀, 超高压高温, 超临界流体, CO腐蚀产物膜

Abstract:

The state of carbon dioxide and its effect on corrosion of pipe string for the oil and gas well at high temperature and pressure were theoretically analysed. A new theoretical conception was presented, in which the carbon dioxide mole concentration in the system and its distribution coefficient in the medium of oil and water in the condiiofl pere edefined to describe corrosion procedure of carbon dioxide in the deep stratum and pressure funnel in pipe string when carbon dioxide is in the supercritical fluid state.

Key words: CO2 corrosion, high pressure and temperature, supercritical fluid, CO2 corrosion film

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