Elevator apparatus and method for running well bore tubing

E - Fixed Constructions – 21 – B

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Details

E21B 19/06 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2430254

An elevator apparatus (10) for manipulating well bore tubing (12) includes a circular body (16) having a top (18) and a central cavity (26) around a body axis (28). The cavity (26) has a diameter allowing the collar portion (14) of the tubing (12) to pass longitudinally therethrough. A plurality of cavity restricting members (36) above the body (16), supported on and spaced apart around the top (18) of the body (16), have proximal (38) and distal portions (40) in respect to the cavity (26). One or more actuators (60) are operatively associated with the petal plates (36) for moving the proximal portion (38) of each cavity restricting member (36) into the cavity (26) an extent sufficient, in combination with the other cavity restricting members (36) so moved, to prevent passage of the collar portion (14) of the tubing (12) through the cavity (26), thereby to hold the tubing (12) with the elevator (10).

L'invention concerne un appareil élévateur pour manipuler une tige de puits de forage, qui comprend un corps circulaire possédant un sommet et une cavité centrale située autour d'un axe du corps. Cette cavité possède un diamètre permettant à la partie collier de la tige de passer longitudinalement à travers elle. Une pluralité d'éléments de limitation de la cavité situés au-dessus du corps, soutenus par le sommet du corps et espacés autour de ce dernier, possèdent des parties proximale et distale par rapport à la cavité. Au moins un actionneur fonctionne avec les plaques pétales pour déplacer la partie proximale de chaque élément de limitation de la cavité dans la cavité à une distance suffisante pour empêcher, avec les autres éléments de limitation de la cavité ainsi déplacés, le passage de la partie collier de la tige à travers la cavité, maintenant ainsi la tige avec l'élévateur.

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