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US 2026/0266145 A1Published application
Casing running tool multi-gripper
AssigneeNabors Drilling Technologies USA, Inc.
InventorGustav ETUKUDO
Life of this patent
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Abstract
The present disclosure provides a gripper for a casing running tool. The gripper includes an inner mandrel, which has a profile suitable for torque load transfer and a recessed portion having shoulders, and a split sleeve configured to be installed in the recessed portion of the inner mandrel. The split sleeve, which is configured to mate with the inner mandrel, includes an outer profile having a plurality of ramps. Each ramp of the outer profile of the split sleeve is configured to include a roller thereon such that each roller exhibits a radial force when the split sleeve is subjected to a downward force.
Claims25
A gripper for a casing running tool, comprising:
- an inner mandrel comprising opposing first and second end portions, the first end portion comprising a first profile suitable for torque load transfer at the first end portion of the inner mandrel and the second end portion comprising a second profile suitable for torque load transfer at the second end portion of the inner mandrel;
- wherein the inner mandrel comprises a recessed portion located between the first profile and the second profile;
- wherein the recessed portion comprises a plurality of shoulders;
- and
- a split sleeve configured to be installed in the recessed portion of the inner mandrel;
- wherein the split sleeve comprises an inner profile configured to mate with (1) the first profile and the second profile of the inner mandrel and (2) the plurality of shoulders of the recessed portion of the inner mandrel;
- wherein the split sleeve is split longitudinally into at least two pieces wherein the at least two pieces of the split sleeve are configured to be longitudinally fastened together;
- wherein the inner mandrel and split sleeve are in rotational communication when the at least two pieces of the split sleeve are longitudinally fastened together and the split sleeve is installed in the recessed portion of the inner mandrel;
- and
- wherein the split sleeve comprises an outer profile comprising a plurality of ramps, wherein each ramp comprises one or more rollers thereon, and wherein the outer profile is configured such that the one or more rollers exhibit a radial force when the split sleeve is subjected to a downward force.
7 more elements
(canceled)
A gripper for a casing running tool, comprising:
- an inner mandrel comprising opposing first and second end portions, the first end portion comprising a first profile suitable for torque load transfer at the first end portion of the inner mandrel and the second end portion comprising a second profile suitable for torque load transfer at the second end portion of the inner mandrel;
- wherein each of the first and second profiles comprises an octagonal profile;
- wherein the inner mandrel comprises a recessed portion located between the first profile and second profile;
- and
- wherein the recessed portion comprises 20 to 30 shoulders;
- and
- a split sleeve configured to be installed in the recessed portion of the inner mandrel;
- wherein the split sleeve comprises an inner profile configured to mate with (1) the first profile and the second profile of the inner mandrel and (2) the 20 to 30 shoulders of the recessed portion of the inner mandrel;
- wherein the split sleeve is split longitudinally into two semicircular pieces having substantially the same outer perimeter and configured to be longitudinally fastened together with a first screw near the first profile and a second screw near the second profile;
- wherein the split sleeve comprises an outer profile comprising a plurality of ramps, wherein each ramp comprises one or more rollers thereon, and wherein the outer profile is configured such that the one or more rollers exhibit a radial force when the split sleeve is subjected to a downward force;
- and
- wherein the inner mandrel and split sleeve are in rotational communication when the two semicircular pieces of the split sleeve are longitudinally fastened together and the split sleeve is installed in the recessed portion of the inner mandrel.
9 more elements
A casing running tool, comprising:
- an actuator configured to be attached to a top drive and transfer torque from the top drive to a gripper;
- and
- a gripper for the casing running tool wherein the gripper comprises:
- an inner mandrel comprising opposing first and second end portions, the first end portion comprising a first profile suitable for torque load transfer at the first end portion of the inner mandrel and the second end portion comprising a second profile suitable for torque load transfer at the second end portion of the inner mandrel;
- wherein the inner mandrel comprises a recessed portion located between the first profile and second profile;
- wherein the recessed portion comprises a plurality of shoulders;
- and
- a split sleeve configured to be installed in the recessed portion of the inner mandrel;
- wherein the split sleeve comprises an inner profile configured to mate with (1) the first profile and the second profile of the inner mandrel and (2) the plurality of shoulders of the recessed portion of the inner mandrel;
- wherein the split sleeve is split longitudinally into at least two pieces configured to be longitudinally fastened together;
- wherein the inner mandrel and split sleeve are in rotational communication when the at least two pieces of the split sleeve are longitudinally fastened together and the split sleeve is installed in the recessed portion of the inner mandrel;
- and
- wherein the split sleeve comprises an outer profile comprising a plurality of ramps, wherein each ramp comprises one or more rollers thereon, and wherein the outer profile is configured such that the one or more rollers exhibit a radial force when the split sleeve is subjected to a downward force.
10 more elements
(canceled)
A process of using a casing running tool, comprising:
- providing a casing running tool for making up tubular connections, wherein the casing running tool comprises:
- an actuator configured to be attached to a top drive and transfer torque from the top drive to a gripper;
- and
- a gripper for the casing running tool wherein the gripper comprises:
- an inner mandrel comprising opposing first and second end portions, the first end portion comprising a first profile suitable for torque load transfer at the first end portion of the inner mandrel and the second end portion comprising a second profile suitable for torque load transfer at the second end portion of the inner mandrel;
- wherein the inner mandrel comprises a recessed portion located between the first profile and second profile;
- wherein the recessed portion comprises a plurality of shoulders;
- and
- a split sleeve having a diameter wherein the split sleeve is configured to be installed in the recessed portion of the inner mandrel;
- wherein the split sleeve comprises an inner profile configured to mate with (1) the first profile and the second profile of the inner mandrel and (2) the plurality of shoulders of the recessed portion of the inner mandrel;
- wherein the split sleeve is split longitudinally into at least two pieces configured to be longitudinally fastened together;
- wherein the inner mandrel and split sleeve are in rotational communication when the at least two pieces of the split sleeve are longitudinally fastened together and the split sleeve is installed in the recessed portion of the inner mandrel;
- and
- wherein the split sleeve comprises an outer profile comprising a plurality of ramps, wherein each ramp comprises one or more rollers thereon, and wherein the outer profile is configured such that the one or more rollers exhibit a radial force when the split sleeve is subjected to a downward force;
- selecting the diameter of the split sleeve such that the diameter facilitates the making up of the tubular connections;
- and
- making up tubular connections using the casing running tool.
14 more elements
A gripper for a casing running tool, comprising:
- an inner mandrel comprising opposing first and second end portions, the first end portion comprising a first profile suitable for torque load transfer at the first end portion of the inner mandrel and the second end portion comprising a second profile suitable for torque load transfer at the second end portion of the inner mandrel;
- wherein the inner mandrel comprises a recessed portion located between the first profile the second profile;
- wherein the recessed portion comprises a plurality of shoulders;
- and
- a split sleeve configured to be installed in the recessed portion of the inner mandrel;
- wherein the split sleeve comprises an inner profile configured to mate with (1) the first profile and the second profile of the inner mandrel and (2) the plurality of shoulders of the recessed portion of the inner mandrel;
- wherein the inner mandrel and sleeve are in rotational communication when the sleeve is installed in the recessed portion of the inner mandrel;
- and
- wherein the split sleeve comprises an outer profile comprising a plurality of ramps, wherein each ramp comprises one or more rollers thereon, and wherein the outer profile is configured such that the one or more rollers exhibit a radial force when the split sleeve is subjected to a downward force.
6 more elements
(canceled)
Dependencies are inferred from the claim text.