System and method for installing or removing a seal sub from a riser
AssigneeCameron International Corporation
InventorsTerry Jason Smith, Karina Yanet Rivera, Roger David Boisjolie
Life of this patent
Estimating the term…
Abstract
A tool configured to facilitate installation or removal of a seal sub from an annular structure includes a support structure configured to be coupled to the annular structure, a shaft extending axially from the support structure, and an engaging structure coupled to the shaft. The engaging structure includes a plurality of engaging members, and each of the plurality of engaging members is configured to move in a radial direction between a retracted position that enables the engaging structure to be inserted into the seal sub and an extended position that enables the respective engaging member of the plurality of engaging members to engage the seal sub.
Claims19
A tool configured to facilitate installation or removal of a seal sub from an annular drilling or production structure, comprising:
- a support structure configured to be coupled to the annular structure;
- a shaft extending axially from the support structure, wherein the shaft is configured to rotate relative to the support structure;
- and
- an engaging structure coupled to the shaft, wherein the engaging structure comprises a plurality of engaging members and a plurality of springs, the plurality of springs are configured to bias a respective engaging member of the plurality of engaging members in respective radial directions between a retracted position that enables the engaging structure to be inserted into the seal sub and an extended position that enables the respective engaging member of the plurality of engaging members to engage corresponding recesses of the seal sub, and wherein the engaging members are configured to move in the radial directions independent of the rotation of the shaft.
A system configured to facilitate installation or removal of a seal sub from an annular drilling or production structure, comprising:
- a tool, comprising:
- a fastener configured to couple to a flange of the annular structure;
- a support structure configured to be coupled to the flange of the annular structure with the fastener;
- a threaded shaft extending along an axial axis from the support structure, wherein the threaded shaft is in a fixed position along the axial axis and is configured to rotate about the axial axis relative to the support structure;
- and
- an engaging structure threadably coupled to the threaded shaft and configured to expand along a radial axis to engage the seal sub.
A method for installing or removing of a seal sub from an annular drilling or production structure, the method comprising:
- coupling a first arm of a support structure of a tool to a flange of the annular structure with a first fastener;
- coupling a second arm of the support structure of the tool to the flange of the annular structure with a second fastener;
- driving a plurality of engaging members of the tool radially outward to engage corresponding recesses of the seal sub;
- and
- rotating an axially-extending shaft of the tool to drive the plurality of engaging members axially while the plurality of engaging members engage the corresponding recesses of the seal sub to install or to remove the seal sub from the annular structure.
Dependencies are inferred from the claim text.