Multipipe - Subsea gravity gas-liquid separator

A process solution for deep and ultra deep waters and/or high pressure applications

  • 4 to 8Pipes
  • 2Phase (G/L) separation
  • 4000 mWater depth for which the Multipipe separator offers gravity separation with slug handling capacity
  • 68Typical allowable slug volume

Benefits of the technology

• Robust and reliable process design based on field proven gravity separation

• Large volumes available in order to handle slugs

• Pipes with reduced wall thickness compared to single vessel design

• A flexible design to cope with a wide range of applications and requirements (high pressure, high flowrate, slugs, etc.)

• Fully modular system with retrievable components

• Allows maximization of local fabrication and assembly.

Development work


Extensive qualification program performed to demonstrate performances regarding hydrodynamic behavior, separation quality under real flow conditions and internals.


Qualification of a novel gas/liquid separator for deepwater application, R. Di Silvestro, S. Abrand, S. Shaiek, T. Mevel, X. Riou, deep offshore technology conference, Monaco, 2009


Qualification Testing of the Deepwater Multipipe Separator: Hydrodynamic Behaviour and Separation Performances. R. Di Silvestro, S. Abrand, S. Shaiek, N. Butin, X. Riou,, deep offshore technology conference, Amsterdam, 2010


A novel gas/liquid separator to enhance production of deepwater marginal fields. Di Silvestro Roberto, Abrand Stephanie, Shaiek Sadia, Butin Nicolas, Riou Xavier, Decrin Marie Kathleen, OTC, Houston, 2011

Multipipe– Subsea gravity gas liquid separator
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