Subsea overload release system and method

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/06 (2006.01) E21B 17/08 (2006.01) E21B 33/08 (2006.01)

Patent

CA 2761072

The disclosure provides a subsea overload release system and method. The disclosure provides a releasable connection system that can be overridden during an overload condition, and is resettable in a subsea location in situ. During normal operation, a collet sleeve is slidably engageable with a collet having one or more fingers that can releasably couple a first member with a second member. During an overload condition, an overload piston acting on fluid in an overload reservoir causes an overload pressure and a rupture or other release of fluid through an overload pressure member, causing the overload reservoir to at least partially collapse. The collapse allows the system to extend and force open the fingers to disengage the second member from the first member. When the overload symptom is rectified, the overload reservoir can be reset and the overload pressure member reset or replaced without requiring repairs above sea surface.

L'invention concerne un système et un procédé de libération de surcharge sous-marine. L'invention concerne un système de liaison amovible qui peut être dépassé pendant une condition de surcharge, et peut être réinitialisé dans un emplacement sous-marin in situ. Pendant le fonctionnement normal, une douille de pince est destinée à coopérer de manière coulissante avec une pince comprenant un ou plusieurs doigts permettant d'accoupler de manière amovible un premier élément à un second élément. Lors d'une condition de surcharge, un piston de surcharge agissant sur le fluide dans un réservoir de surcharge provoque une pression de surcharge et une rupture ou une autre libération de fluide par le biais d'un élément de pression de surcharge, provoquant l'affaissement au moins partiel du réservoir de surcharge. L'affaissement permet au système de se déployer et aux doigts de s'ouvrir afin de libérer le second élément du premier élément. Lorsque le symptôme de surcharge est rectifié, le réservoir de surcharge peut être réinitialisé et l'élément de pression de surcharge réinitialisé ou remplacé sans nécessiter de réparations au-dessus de la surface de la mer.

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