Top drive operated casing running tool
AssigneeDrawWorks LP
InventorsAlbert Augustus Mullins, Matthew J. Hickl
Life of this patent
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Abstract
A casing running tool is connected to a top drive with a clutch that operates with set down weight against a spring resistive force. Setting down weight with rotation in a first direction raises an actuation member that pushes the slips out radially. The weight of the string then keeps the slips in position so that the string can be picked up and the rig floor slips removed followed by lowering the string while circulating and rotating. With slips set inside the joint and the string hanging free, rotating the top drive rotates the string as the string is lowered. With slips again supporting the string on the rig floor the top drive can be rotated in an opposed direction with weight set down to back off the slips and to remove it from the top joint.
Claims18
A top drive operated tubular running tool assembly, comprising:
- a housing supported by the top drive;
- a gear driven assembly in said housing to selectively transmit rotational input from the top drive and convert such rotation to axial movement of an actuator member operably linked to at least one slip for selective grip and release of the tubular by said slip;
- said selective transmission of rotational input comprises a clutch.
A top drive operated tubular running tool assembly, comprising:
- a housing supported by the top drive;
- a gear driven assembly in said housing to selectively transmit rotational input from the top drive and convert such rotation to axial movement of an actuator member operably linked to at least one slip for selective grip and release of the tubular by said slip;
- said selective transmission of rotational input comprises a clutch;
- said clutch is biased to a first position where rotation of the top drive will not move said actuator member axially.
Dependencies are inferred from the claim text.