Riser lifting tool
AssigneeHannon Hydraulics GP, LLC
InventorsH. Wade Reed, E. Mark Klatt, Donald E. Mullins
Life of this patent
Estimating the term…
Abstract
A lifting tool (10) is provided for supporting an oilfield riser during relocation by a crane having a support line (14). The tool body (12) has an inverted U-shaped configuration with a central opening (18) and a downwardly facing throat (20). A powered drive (26) rotates the arcuate member between the open position and the closed position.
Claims20
A lifting tool for supporting an oilfield riser during relocation by crane having a support line, comprising:
- a tool body for suspending from the support line and having an inverted U-shaped configuration, with a central opening for receiving the riser and a downwardly facing throat;
- an arcuate member supported on the tool body and rotatable about a central axis, the arcuate member having an open position wherein a spacing in the arcuate member is circumferentially aligned with the open throat of the tool body, and the arcuate member having a closed position wherein the arcuate member at least substantially closes the open throat such that the arcuate member supports the riser when positioned within the central opening of the tool body when the tool is raised by the support line;
- and
- a powered drive for rotating the arcuate member between the open position and the closed position.
A lifting tool for supporting an oilfield riser during relocation by crane having a support line, comprising:
- a tool body for suspending from the support line and having an inverted U-shaped configuration, with a central opening for receiving the riser and a downwardly facing throat;
- an arcuate member supported on the tool body and rotatable about a central axis, the arcuate member having an open position wherein a spacing in the arcuate member is circumferentially aligned with the open throat of the tool body, and the arcuate member having a closed position wherein the arcuate member closes the open throat such that the arcuate member supports the riser when positioned within the central opening of the tool body when the tool is raised by the support line, a circumferential width of the spacing in the arcuate member being substantially equal to the circumferential width of the open throat;
- and
- a powered drive for rotating the arcuate member between the open position and the closed position.
A method of supporting an oilfield riser during relocation by crane having a support line, comprising:
- suspending a tool body from the support line, the tool body having an inverted U-shaped configuration, with a central opening for receiving the riser and a downwardly facing throat;
- supporting an arcuate member on the tool body and rotatable about a central axis, the arcuate member having an open position wherein a spacing in the arcuate member is circumferentially aligned with the open throat of the tool body, and the arcuate member having a closed position wherein the arcuate member at least substantially closes the open throat such that the arcuate member supports the riser when positioned within the central opening of the tool body when the tool is raised by the support line;
- and
- powering a drive for rotating the arcuate member between the open position and the closed position.
Dependencies are inferred from the claim text.