Improvements in subsea multiphase pumping systems

Details Improvements in subsea multiphase pumping systems Improvements in subsea multiphase pumping systems

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/06 (2006.01) B04C 3/06 (2006.01) E21B 43/01 (2006.01) F04B 49/06 (2006.01) F04C 2/08 (2006.01)

Patent

CA 2653352

In subsea multiphase pumping systems, the use of a gas -liquid cylindrical cyclone (GLCC) as a separator to recirculate liquid from pump discharge to pump suction, especially during high gas inlet conditions from a multiphase petroleum stream. Further contemplated is protection of the pump from momentary high gas inlet conditions due to an incoming slug flow profile from a petroleum stream, via transforming a naturally varying multiphase petroleum stream into separated phases for measured distribution to the pump suction and ensuring a minimum liquid flow.

Dans des systèmes sous-marins de pompage polyphasique, la présente invention concerne l'utilisation d'un cyclone cylindrique à gaz-liquide (GLCC) en tant que séparateur faisant recirculer un liquide depuis le côté refoulement vers le côté aspiration de la pompe, particulièrement durant des conditions d'entrée de gaz importante à partir d'un courant de pétrole à phases multiples. De plus, l'invention concerne la protection de la pompe dans le cas de conditions momentanées d'entrée de gaz importante dues à un profil d'arrivée d'écoulement par masses successives du courant de pétrole, ce courant polyphasique qui varie naturellement en phases séparées étant transformé en un flux mesuré à l'aspiration de pompe garantissant un écoulement liquide minimum.

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