Methods and devices for isolating wellhead pressure

Details Methods and devices for isolating wellhead pressure Methods and devices for isolating wellhead pressure

E - Fixed Constructions

21

B

E21B 33/068 (2006.01) E21B 34/02 (2006.01)

Patent

CA 2713225

A wellhead is provided. In one embodiment, the wellhead includes a plug for sealing a side passage of the wellhead. The plug may include an outer member, an inner member extending through the outer member and coupled to the outer member with at least one degree of freedom of movement relative to the outer member, and a moveable seal disposed around the outer member. In some embodiments, the moveable seal is configured to seal against the side passage in response to being moved on the outer member by the inner member.

L'invention porte sur une tête de puits. Dans un mode de réalisation, la tête de puits comprend un obturateur pour sceller de façon étanche un passage latéral de la tête de puits. L'obturateur peut comprendre un élément externe, un élément interne s'étendant à travers l'élément externe et couplé à l'élément externe avec au moins un degré de liberté de mouvement par rapport à l'élément externe, et un joint d'étanchéité mobile disposé autour de l'élément externe. Dans certains modes de réalisation, le joint d'étanchéité mobile est configuré pour se plaquer contre le passage latéral en réponse à son déplacement sur l'élément externe par l'élément interne.

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