Dual subsea production chokes for high pressure well production

Details Dual subsea production chokes for high pressure well production Dual subsea production chokes for high pressure well production

E - Fixed Constructions

21

B

E21B 43/01 (2006.01)

Patent

CA 2664617

Configurations and methods for subsea hydrocarbon production at high pressure wells are contemplated in which production control is achieved by implementing two choke valves in series between the wellhead and the riser. The first production choke reduces pressure from well pressure to a reduced pressure, while the second production choke further reduces the pressure from the reduced pressure to riser pressure. The first production choke is preferably coupled to the production tree, and the second production choke is coupled to production tree, a subsea pipeline-end device (e.g., PLET or PLEM), a well jumper, or a flowline jumper.

L'invention concerne des configurations et des procédés pour une production sous-marine d'hydrocarbures dans des puits haute pression où un contrôle de production est obtenu en installant deux vannes à duse en série entre la tête de puits et la colonne montante. La première duse de production réduit la pression de la pression du puits à une pression réduite, tandis que la seconde duse de production réduit davantage la pression de la pression réduite à la pression de colonne montante. La première duse de production est de préférence couplée à l'arbre de production, et la seconde duse de production est couplée à l'arbre de production, à un dispositif terminal de canalisation sous-marine (par exemple PLET ou PLEM), à un collecteur de puits ou à un collecteur de conduite.

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