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Annual ‘Offshore Pipeline Technology, This paper discusses the recently completed design and construction Camisea Offshore Loading System which is part of a larger project that extracts natural gas from the San Martin and Cashiriari gas fields in the Camisea region of central Peru. The loading system consists of the following elements: Two off 20” low temperature, insulated LPG pipe in pipe systems (24” carrier) with riser; One uninsulated 24” Naphtha line with riser; One uninsulated 10” Diesel line with riser; One J-tube for power/control umbilical. The paper describes the design and construction challenges, including: Design criteria Material selection Design challenges Pipe in pipe configuration Field joint configuration Tie-in methods Installation methods Inspection requirements System reliability Typical project costs and schedule. DNV OS-F101 was chosen for use as it represents the current state-of-the-art in offshore pipeline design and can be used for systems encountering this project’s temperature range without restriction on allowable stress and strain on the proviso that selected materials are tolerant of all applicable temperature-induced issues. Design Challenges : Pipe in Pipe Configuration, Material Selection, Insulation Requirement, Field Joints, Tie-in Spools and Risers, Installation Methods. Inspection and Monitoring Requirements Provision was made for inspection pigging of the inner pipeline. Project Costs and Schedule.
Tags:field joints, pipeline design, construction challenges, pipeline technology, central peru
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