E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/02 (2006.01) E21B 17/04 (2006.01) F16L 19/06 (2006.01)
Patent
CA 2122957
There is described a method and apparatus for connecting the end of coiled tubing to a downhole tool string, comprising a first tubular housing having a first uphole and a second downhole end and a bore formed therethrough for a length of coiled tubing, a second tubular housing adapted for releasable connection to the downhole end of the first housing, the second housing having a first uphole and a second downhole end and a bore formed therethrough for receiving the length of coiled tubing at least partially into the second housing, slips adapted to at least partially surround the coiled tubing and having on an inner surface thereof raised projections for penetrating a contiguous surface of the coiled tubing for connection thereto, the slips additionally including connectors to interlock with cooperating connectors on the second housing for a non-rotatable torque transmitting connection therebetween, and a force transmitting member disposed between the slips and the first housing to maintain the slips in compressive contact with the coiled tubing.
Cette invention concerne un dispositif de raccordement de tube enroulé à un train de forage, lequel dispositif comporte un premier manchon tubulaire présentant une extrémité supérieure, une extrémité inférieure et, entre les deux, un alésage pouvant loger le tube enroulé, un deuxième manchon tubulaire présentant une extrémité supérieure, une extrémité inférieure et, entre les deux, un alésage dans une partie au moins duquel le tube enroulé peut être logé, le deuxième manchon pouvant être raccordé à volonté à l'extrémité inférieure du premier manchon, des coins entourant au moins partiellement le tube enroulé et dont la face interne porte des saillies destinées à pénétrer dans la surface contiguë du tube enroulé pour le saisir, lesdits coins comportant également des éléments s'imbriquant dans des éléments correspondants du deuxième manchon tubulaire pour réaliser une prise capable de transmettre un couple et, enfin, un élément de transmission d'effort entre les coins et le premier manchon tubulaire, conçu pour presser les coins contre le tube enroulé.
Canadian Fracmaster Ltd.
Moffat & Co.
LandOfFree
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