Dual string elevators

Details Dual string elevators Dual string elevators

E - Fixed Constructions

21

B

255/14.2

E21B 19/00 (2006.01) E21B 19/07 (2006.01)

Patent

CA 1138418

DUAL STRING ELEVATORS Abstract of the Disclosure A dual string elevator having a body with a pair of tapered bowls extending vertically therethrough, lifting projections extending outward from the body in positions aligned with the bowls to prevent bending of a string supported in one of the bowls, a set of gripping slips for each bowl, an actuator for each set of gripping slips, each actuator being mounted in a recess in the body aligned with and spaced outward from the bowls and means for connecting the actuators to their set of gripping slips whereby the slips are moved out of the bowls and lowered into the bowls into pipe gripping position responsive to the movement of the actuators.

364016

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