LOWER STACK ASSEMBLY OF A BLOW-OUT PREVENTER FOR A HYDROCARBON EXTRACTION WELL AND METHOD THEREOF

The present invention relates to a lower stack assembly (1) of a blowout preventer (10) for a hydrocarbon extraction well, at least one safety function (2) which can be hydraulically activated to rapidly cut off of a pipeline section, at least one first valve (3), at least one first fluidic connecti...

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Bibliographische Detailangaben
Hauptverfasser: BUFFARINI, Graziano, FORTUNATO, Vito
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The present invention relates to a lower stack assembly (1) of a blowout preventer (10) for a hydrocarbon extraction well, at least one safety function (2) which can be hydraulically activated to rapidly cut off of a pipeline section, at least one first valve (3), at least one first fluidic connection (6) which connects in permanent manner said at least one first valve (3) and said at least one safety function (2), so that said at least one first valve (3) is adapted to selectively cut off a flow of fluid directed towards said at least one safety function (2); at least one port (4) operatively connected to said at least one first valve (3), said at least one port (4) being adapted to cooperate with a remotely operated vehicle (5) to transmit a pilot signal to said at least one first valve (3); at least one accumulator (7), adapted to house pressurized fluid; at least one second fluidic connection (8) between said at least one accumulator (7) and said first valve (3), so that by cooperating with at least said first valve (3) said at least one accumulator (7) is adapted to supply pressurized fluid, by means of said second fluidic connection (8) and said first fluidic connection (6), to said at least one safety function (2) in order to activate it; wherein said at least one second fluidic connection (8) connects in permanent manner said at least one accumulator (7) and said at least one first valve (3), so that said second fluidic connection (8) remains operative during the entire working life of the assembly (1). La présente invention concerne un ensemble d'empilement inférieur (1) d'un bloc obturateur de puits (10) pour un puits d'extraction d'hydrocarbures, au moins une fonction de sécurité (2) qui peut être hydrauliquement activée pour couper rapidement une section de canalisation, au moins une première vanne (3), au moins un premier raccordement fluidique (6) qui se raccorde de façon permanente à ladite au moins une première vanne (3) et ladite au moins une fonction de sécurité (2), de sorte que ladite au moins une première vanne (3) soit adaptée pour couper sélectivement un écoulement de fluide dirigé vers ladite au moins une fonction de sécurité (2) ; au moins un orifice (4) fonctionnellement raccordé à ladite au moins une première vanne (3), ledit au moins un orifice (4) étant adapté pour coopérer avec un véhicule commandé à distance (5) pour transmettre un signal de pilotage à ladite au moins une première vanne (3) ; au moins un accumulateur (7), ada