Handling And Recovery Devices For Tubular Members And Associated Methods

摘要

Implementations described herein include a hoisting device and method for handling, coupling and recovery of tubular members such as drill string components. The hoisting device has a self-energizing gripping means configured to releasably engage a drill string component. In one aspect, the self-energizing gripping means can be operable to increase at least one of a radial biasing force and a contact friction force applied to a drill string component, causing the gripping means to increase the overall gripping force applied to the component with minimal effort exerted by a hoisting device operator.

主权项

1. A hoisting device, comprising:
a roller gripper housing having a longitudinal axis further comprising:
a cage member having a plurality of roller gripper element openings disposed therein,a base member having an exterior surface and an elongate length extending between a proximal and a distal end, wherein at least a portion of the exterior surface defines at least one wedge surface that tapers inwardly as the wedge surface moves toward the distal end of the base member; andat least one polar array of roller gripper elements disposed in cooperative communication with the plurality of roller gripper element openings and at least a portion of the at least one wedge surface; and a means for lifting the hoisting device.