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Edition and Publication:
< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation
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Overseas Research Center of Research Institute of Petroleum Exploration and Development
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Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
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610041
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2011 Vol.4

    Application of CPI-5 Corrosion Inhibitor in Sour Gas Field
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    Key Words：Nature gas；Gas gathering and transportation pipeline；Corrosion inhibitor；High temperature；Sour gas
    Abstract：Base on requirements and security of QHSE and taking field application of compound corrosion inhibitor CPI-5 used for oil and gas pipelines as an example，introduced is field application process of such corrosion inhibitor. Analyzed firstly is the compatibility between the corrosion inhibitor and gas field water，defamer，acid，alkali and salt in target sour gas field and then high temperature and high pressure autoclave are operated in simulation working conditions to evaluate effects of compound corrosion inhibitor CPI-5 and its compatibility on corrosion inhibition performance. The results show that corrosion inhibitor CPI-5 has good corrosion control effect on oil and gas pipelines and its average corrosion rate in laboratory or field can be controlled below 0.076mm·a-1. It has a prominent effect for controlling CO2 and H2S，suitable for corrosion control in single or mixed corrosion conditions of H2S or CO2 . Corrosion inhibitor CPI-5 has such advantage as easy field injection，not high cost and its experimental process and the test method meet relative QHSE requirements.
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