Flowback tool

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 19/00 (2006.01) E21B 19/16 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2717638

In one embodiment, a flowback tool for miming a tubular string into a wellbore includes a tubular housing having a bore therethrough and a tubular mandrel. The mandrel: has a bore therethrough in communication with the housing bore, is longitudinally movable relative to the housing, is torsionally coupled to the housing, and has a threaded coupling for engaging a threaded coupling of the tubular string. The flowback tool further includes a nose: longitudinally coupled to the housing, operable to receive an end of the tubular string, and including a seal operable to engage a surface of the tubular string, thereby providing fluid communication between a bore of the tubular string and the mandrel bore. The flowback tool further includes an actuator operable to move the mandrel and the nose longitudinally relative to the housing for engaging and disengaging the tubular string.

Selon un mode de réalisation, un outil de refoulement permettant de descendre une colonne tubulaire dans un puits de forage comporte un logement tubulaire traversé dun alésage et un mandrin tubulaire. Le mandrin : est traversé d'un alésage en communication avec lalésage du logement, est mobile longitudinalement par rapport au logement, est couplé en torsion avec le logement, et possède un accouplement fileté lui permettant de s'engager dans un accouplement fileté de la colonne tubulaire. Loutil de refoulement comporte en outre un nez : couplé longitudinalement avec le logement, susceptible de recevoir une extrémité de la colonne tubulaire, et comprenant un joint susceptible de sengager dans une surface de la colonne tubulaire, assurant de cette manière une communication fluide entre un alésage de la colonne tubulaire et lalésage du mandrin. Loutil de refoulement comporte en outre un actionneur susceptible de déplacer le mandrin et le nez longitudinalement par rapport au logement pour l'engagement de la colonne tubulaire et le dégagement de celle-ci.

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