Ocean Engineering Equipment and Technology ›› 2023, Vol. 10 ›› Issue (4): 24-29.doi: 10.12087/oeet.2095-7297.2023.04.04

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Application of Underwater Reinforcement Repair Technique with Wrap Composite Materials of External Corrosion for Submarine Pipeline

LIU Jun1,2,3,4，ZHANG Chuanxu1,2,3，QU Jie1,2,3，   

  1. 1. Tianjin Key Laboratory of Subsea Pipeline， Tianjin， 300452；
    2. CNOOC Energy Technology & Services Limited Key Laboratory of Safety Guarantee Technology for Subsea Pipeline， Tianjin 300452, China;
    3. CNOOC (Tianjin) Pipeline Engineering Technology Co.， Ltd.， Tianjin 300452， China；
    4. Tianjin Beihai Oil Human Resources Consulting Service Co.， Ltd.， Tianjin 300452， China
  • Online:2024-01-06 Published:2024-01-06

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Abstract: The safe service of submarine pipelines in oil， gas and water transportation is very important， and the long standing corrosion problem also affects the service life of submarine pipelines. The composite material reinforcement and repair technology has been widely used in onshore pipelines， but it has not been applied in the repair of submarine pipelines. A submarine pipeline adopts the composite material underwater winding reinforcement and repair technology to carry out practical application. The practical application proves that the composite material underwater winding reinforcement and repair technology is a safe and reliable reinforcement and repair technology. This paper will introduce the repair material properties of the composite underwater winding reinforcement repair technology， the application design of the repair system， and the construction technology of the repair system.

Key words: subsea pipeline, service life, composite materials, reinforcement repair

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