Subsea lubricator device and methods of circulating fluids...

E - Fixed Constructions – 21 – B

Patent

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E21B 33/072 (2006.01) E21B 33/076 (2006.01)

Patent

CA 2385805

Subsea lubricator device, comprising a blowout preventer assembly, a tool housing assembly and a stuffing box, intended to be located at a subsea Christmas tree, and methods of circulating fluids in a subsea lubricator. The device comprises a blowout preventer (40) and a lubricator (60). Along the entire length of the device a bypass (46, 66) is located. The bypass communicates fluid with the device via a fluid connection (72) at the upper end of the tool housing and via a valve assembly (51) at the bottom of the blowout preventer. This permits removal of gas or oil being present in the device by circulating the hydrocarbons in the well.

L'invention concerne un dispositif sous-marin de graissage, lequel comprend un ensemble obturateur anti-éruption, un ensemble logement à outils, ainsi qu'une boîte à garniture, et est conçu pour être placé au niveau d'une tête d'éruption; elle concerne également des procédés de circulation de fluides dans ce graisseur. Ce dispositif comprend un obturateur anti-éruption (40) ainsi qu'un graisseur (60). Une dérivation (46, 66) située sur toute la longueur du dispositif est en communication fluidique avec le dispositif, par l'intermédiaire d'un raccord fluidique (72) placé au niveau de l'extrémité supérieure du logement à outils et par l'intermédiaire d'un ensemble soupapes (51) monté au niveau du fond de l'obturateur anti-éruption. Ainsi, grâce à cet agencement, on peut enlever le gaz ou l'huile présents dans le dispositif, en faisant circuler les hydrocarbures dans le puits.

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