Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Basic Design of Deep Subsea Manifold Frame Structure for Oil Production

심해저 원유 생산용 매니폴드 프레임 구조 기본 설계

  • Park, Se-Yung (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Choung, Joonmo (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 박세용 (인하대학교 조선해양공학과) ;
  • 정준모 (인하대학교 조선해양공학과)
  • Received : 2015.03.17
  • Accepted : 2015.06.22
  • Published : 2015.06.30
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Abstract

Amanifold is one of the essential subsea oil and gas production components to simplify the subsea production layout. It collects the production fluid from a couple of wellheads, transfers it to onshore or offshore storage platforms, and even accommodates water and gas injection flowlines. This paper presents the basic design procedure for a manifold frame structure with novel structural verification using in-house unity check codes. Loads and load cases for the design of an SIL 3 class-manifold are established from a survey of relevant industrial codes. The basic design of the manifold frame is developed based on simple load considerations such as the self weights of the manifold frame and pipeline system. In-house software with Eurocode 3 embedded, called INHA-SOLVER, makes it possible to carry out code checks on the yield and buckling unities. This paper finally proves that the new design of the manifold frame structure is effective to resist a permanent and environment load, and the in-house code is also adaptively combined with the commercial finite element code Nastran.

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