樊学华, 陆学同, 谢成, 张博, 陈丽娟, 王元春. 酸性高含盐油田管道内腐蚀失效控制与材料选择[J]. 油气储运, 2016, 35(8): 849-855. DOI: 10.6047/j.issn.1000-8241.2016.08.010
引用本文: 樊学华, 陆学同, 谢成, 张博, 陈丽娟, 王元春. 酸性高含盐油田管道内腐蚀失效控制与材料选择[J]. 油气储运, 2016, 35(8): 849-855. DOI: 10.6047/j.issn.1000-8241.2016.08.010
FAN Xuehua, LU Xuetong, XIE Cheng, ZHANG Bo, CHEN Lijuan, WANG Yuanchun. Internal corrosion control and material selection for pipes in sour and high-salty oil fields[J]. Oil & Gas Storage and Transportation, 2016, 35(8): 849-855. DOI: 10.6047/j.issn.1000-8241.2016.08.010
Citation: FAN Xuehua, LU Xuetong, XIE Cheng, ZHANG Bo, CHEN Lijuan, WANG Yuanchun. Internal corrosion control and material selection for pipes in sour and high-salty oil fields[J]. Oil & Gas Storage and Transportation, 2016, 35(8): 849-855. DOI: 10.6047/j.issn.1000-8241.2016.08.010

酸性高含盐油田管道内腐蚀失效控制与材料选择

Internal corrosion control and material selection for pipes in sour and high-salty oil fields

  • 摘要: 随着国际酸性高含盐油田(pH2S≥0.3 kPa,总含盐量超过10 000 mg/L或Cl-含量大于6 000 mg/L)的开发,其管道的服役工况更加严峻,因而对管道材料的选择提出了更高要求。通过对酸性高含盐油田的内腐蚀失效分析,认为主要的失效形式是点蚀和开裂。基于国内外标准和国际石油公司标准(NACE、SHELL、ADCO、TOTAL、IPS等)的规定,归纳了内腐蚀失效的控制措施。总结了酸性高含盐油气田管道材料的选择原则(即基于开裂失效和腐蚀失效风险的选材原则),并基于腐蚀失效材料选择的两个方面(服役期内碳钢的腐蚀量和腐蚀介质),明确了抗酸碳钢选用的基本流程和耐蚀合金的适用边界,为酸性高含盐油田管道材料的选择提供了参考和依据。

     

    Abstract: With the development of sour and high-salty oil fields (pH2S≥0.3 kPa, TDS≥10, 000 mg/L or Cl-≥6, 000 mg/L) in the world, the working conditions for pipeline and piping become harsher, which propose higher requirements for selection of pipe materials. In this paper, internal corrosion in sour and high-salty oil fields is analyzed, indicating that pitting and cracking are the most typical types of failure. Based on the domestic and international standards as well as specifications of international oil companies (e.g. NACE, SHELL, ADCO, TOTAL and IPS), the control measures for internal corrosion are defined. The principles of material selection for pipes in sour and high-salty oil fields are proposed based on the failures of cracking and corrosion. At the same time, the material selection is considered based on the corrosion failure in two aspects of the corrosion volume and the corrosion medium of carbon steel in cycle life. Moreover, the basic process for selecting sour-resistant carbon steel and the application limits of corrosion resistant alloy (CRA) are determined. This paper provides reference and foundation for material selection of pipes in sour and high-salty oil fields.

     

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