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< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation Southwest Company
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China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
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No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2014 Vol.2

    Selection of 3PE Field Joint Coatings and Mending Coatings of Buried Pipelines in Service
    Author of the article:Li Junzhong
    Author's Workplace：CNOOC Fujian LNG Co., Ltd.
    Key Words：Field joint coating; Mending coating; 3PE coating; Buried pipeline
    Abstract：

    In order to improve quality of 3PE field joint coatings and mending coatings in buried pipelines in service and reduce the risk of pipeline corrosion perforation, it is very important to select appropriate field joint coatings and mending coatings. Through analysis and discussion on performance and application situation of commonly used and updated field joint coatings and mending coatings at home and abroad, combined with basic principle of field joint and mending operation of buried pipelines in service with 3PE coating, it is concluded that polypropylene tape with self-adhesive layer of butyl rubber pressure sensitive adhesive and compound system of viscoelastic body + protective belt are the preferred materials used for field joint and mending of buried pipeline in service with 3PE coating. The system has such advantages as strong adhesion, high mechanical strength, convenient operation and good anti-corrosion performance.

     


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