Handling and recovery devices for tubular members and associated methods
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.
1. A device comprising:
a roller gripper housing having a longitudinal axis:
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 proximal end of the base member; and
at least one polar array of roller gripper elements, the roller gripper elements of each polar array of the at least one polar array being disposed in cooperative communication with at least a portion of the plurality of roller gripper element openings and at least a portion of the at least one wedge surface,
wherein, in response to insertion of the device into a drill string component in a first direction, the roller gripper elements of a first polar array of the at least one polar array of roller gripper elements are configured to be urged radially inwardly, and
wherein, with the roller gripper elements of the first polar array of roller gripper elements within the drill string component, the at least one wedge surface of the base member is configured to urge the roller gripper elements of the first polar array of roller gripper elements radially outward in response to retraction of the device in a second direction opposite the first direction, thereby coupling the device to an inner surface of the drill string component.
2. The device of claim 1 , further comprising a threaded collar configured to secure the device to a second drill string component.
3. The device of claim 1 , further comprising:
a hoisting cable eye; and
at least one radial bearing disposed between the hoisting cable eye and the roller gripper housing,
wherein the at least one radial bearing is operable to allow rotation about the longitudinal axis of the roller gripper housing.
4. The device of claim 1 , further comprising:
a hoisting cable eye; and
at least one thrust bearing,
wherein following engagement between the roller gripper housing and the drill string component, the at least one thrust bearing is configured to transfer tension between a hoist cable associated with the hoisting cable eye and the drill string component.
5. The device of claim 1 , wherein the device defines a central bore.
6. The device of claim 5 , further comprising a connection port operably connected to the central bore, wherein the central bore is configured to permit passage of fluid, and wherein the connection port is configured to facilitate at least one of water supply and fluid venting.
7. The device of claim 6 , wherein the roller gripper housing further comprises at least one fluid seal that is configured to be disposed against the inner surface of the drill string component.
8. The device of claim 1 , further comprising a biasing member that maintains the at least one polar array of roller gripper elements at an axial position corresponding to a maximum radial displacement along the at least one wedge surface of the base member relative to a central axis of the base member when the device is in an unloaded state.
9. The device of claim 1 , wherein a distance between opposing roller gripper elements in the at least one polar array of roller gripper elements is greater than an inner diameter of the drill string component when the device is in an unloaded state prior to insertion within the drill string component.
10. The device of claim 1 , further comprising a handle configured to permit manual positioning or handling of the device.
11. The device of claim 1 , wherein the at least one polar array of roller gripper elements comprises multiple polar arrays of roller gripper elements.