Subsea assembly

Details Subsea assembly Subsea assembly

E - Fixed Constructions

21

B

E21B 34/04 (2006.01) E21B 33/035 (2006.01)

Patent

CA 2704476

A subsea assembly (11) comprises a valve assembly (12) and a winch assembly (8) mounted relative to the valve assembly (12). The valve assembly (12) comprises: a valve block (22) defining a throughbore (24); a valve member (26) mounted within the valve block (22) and adapted to be moved between open and closed positions to selectively provide a fluid barrier within the throughbore (24); and first and second valve stems (29, 31) extending from respective sides of the valve member (26) and through a side wall of the valve block (22), each valve stem (29, 31) including a sealing region in fluid communication with the throughbore (24), wherein a cross sectional area of the sealing region of the first valve stem (29) is substantially equal to the cross-sectional area of the sealing region of the second valve stem (31). The winch assembly (8) comprises a winch chamber (9) in fluid communication with the throughbore (24) of the valve block (22), wherein the winch assembly (8) comprises a winch drum (15) carrying a spoolable member (17) adapted to extend through the throughbore (24) of the valve block (22).

L'invention concerne un ensemble sous-marin (11) comprenant un ensemble vanne (12) et un ensemble treuil (8) associé à l'ensemble vanne (12). Ledit ensemble vanne (12) comprend: un bloc vanne (22) comportant un alésage traversant (24); un élément vanne (26) monté à l'intérieur du bloc vanne (22) et conçu pour passer d'une position ouverte à une position fermée, de manière à créer une barrière fluidique à l'intérieur de l'alésage traversant (24); une première et une seconde tige de vanne (29, 31) partant des côtés respectifs de l'élément de vanne (26) et passant à travers une paroi latérale du bloc de vanne (22), chaque tige de vanne (29, 31) comprenant une région étanche en communication fluidique avec l'alésage (24), une section transversale de la région étanche de la première tige de vanne (29) étant sensiblement égale à la section transversale de la région étanche de la seconde tige de vanne (31). L'ensemble treuil (8) comprend une chambre de treuil (9) en communication fluidique avec l'alésage (24) du bloc vanne (22), l'ensemble treuil (8) comprenant une poupée de treuil (15) comportant un élément (17) pouvant être enroulé, conçu pour passer dans l'alésage (24) du bloc vanne (22).

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