SpoolSep - Subsea gravity liquid-liquid separator

A process solution to remove and reinject produced water for deep and ultra-deep waters and/or high pressure applications

  • 50 to 120Thousand Barrels Per DayLiquid flowrate
  • 3phases separation having oil and gas recombined in a single outlet
  • 4000mWater depth for which the SpoolSep separator could be designed and manufactured
  • 8Spools

Benefits of the technology

• Increase oil recovery by decreasing the well head back pressure

• Subsea water debottlenecking (mature fields) allowing tie-back of new wells

• Robust and reliable separation process

• Can also be designed for 3-Phase separation

• Good slug handling capabilities

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

• Modular system design allowing easy maintenance and intervention with pipe separators individually retrievable

• Allow maximization of local fabrication and assembly


Development of the SpoolSep, a novel subsea liquid/liquid separator for deep-water/high pressure applications, S. Shaiek, S. Abrand, N. Butin, L. Macauley, R. Hallot, Deep Offshore Technology Conference, New Orleans, October 2011


Development of the SpoolSep: A Novel Subsea Liquid/Liquid Separator for Deepwater / High Pressure Applications, MCEDD Paris La Defense, March 2012


Subsea Gravity Separation: Pipe Solutions for Deep and Ultra Deep Water, S. Shaiek, Subsea Australasia Conference, Perth, February 2013

Subsea Process for Deep and Ultra-Deep-Water: Challenges and Solutions, S. Shaiek, S. Anres, Saipem, Conference SPE -GEP-AFTP, Courbevoie, April 2013


The SpoolSep, an innovative solution for Subsea Produced Water Separation for deep-water / high pressure applications, S. Shaiek, Saipem, MCEDD Madrid, April 2014


The SpoolSep: an innovative solution for subsea water / hydrocarbon separation in deep/ultra-deep waters and high internal pressures, S. Shaiek, Saipem, Underwater Technology Conference, Bergen, June 2014

SpoolSep – Subsea gravity liquid liquid separator
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