A tubing injector

Details A tubing injector A tubing injector

E - Fixed Constructions

21

B

E21B 19/22 (2006.01)

Patent

CA 2463321

A tubing injector for injecting tubing (4) into a pipeline or bore or the like comprises: an annular piston for moving the tubing (4); a collet for gripping the tubing on movement of the piston in an injecting direction, the collet (14) and the tubing being movable with the piston, and the collet being releasable from the tubing (4) on movement of the piston in another direction, and a ratchet collet for preventing the tubing from being ejected.

La présente invention concerne un injecteur à cuvelage servant à injecter du cuvelage (4) dans une conduite, un alésage ou analogue. Cet injecteur comporte un piston annulaire servant à déplacer le cuvelage (4), un collet pour saisir le cuvelage pendant le déplacement du piston selon le sens de l'injection, le collet (14) et le cuvelage étant mobile en même temps que le piston, le collet restant capable de se dégager du cuvelage (1) à l'occasion du déplacement du piston dans l'autre sens, et un collet à cliquet pour empêcher au cuvelage d'être éjecté.

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