Trolley and traveling block system

Details Trolley and traveling block system Trolley and traveling block system

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) E21B 19/02 (2006.01) E21B 19/22 (2006.01)

Patent

CA 2322917

A trolley hoisting system for use in a rig has a derrick mounted to the rig, a winch line extending from an upper end of the derrick, and a traveling block located at one end of the winch line. An injector trolley has at least one cavity for allowing the winch line passage therethrough and is adapted to engage the traveling block so that the winch line may be used to raise and lower the injector trolley along the derrick. A lock arrangement for fixing the injector trolley to the derrick at an upper end thereof allows the traveling block to extend below the injector trolley for performing other desired tasks on the rig.

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