Back to results
US 2026/0286802 A1Published application
Anti-extrusion device with integral plate and lattice for casing hanger annular seal
AssigneeBaker Hughes Pressure Control LLC
InventorsRyan Joseph Parsley, Brian N. Munk, Xichang Zhang, Warren P. Jones, Andre Reyes
Life of this patent
Estimating the term…
Abstract
System and methods are disclosed herein for an anti-extrusion device for oil and gas equipment. The anti-extrusion device may include an annular lattice structure and an annular plate integrated with the annular lattice structure. The anti-extrusion device may be used with an elastomer annular seal so that, when the elastomer annular seal is energized, the annular lattice structure is to deform and is to prevent the elastomer annular seal from extruding into extrusion gaps of the oil and gas equipment.
Claims24
A wellhead system comprising a slip hanger, wherein the slip hanger comprises:
- a slip bowl;
- a top plate;
- an elastomer annular seal configured to be disposed axially between the slip bowl and the top plate;
- an anti-extrusion device comprising:
- an annular plate configured to be positioned toward the slip bowl or positioned toward the top plate;
- and
- an annular lattice structure configured to be disposed axially between the elastomer annular seal and the annular plate, wherein the anti-extrusion device is configured to be deformed when the elastomer annular seal is energized to facilitate blocking the elastomer annular seal from extruding into adjacent-extrusion gaps in the wellhead system;
- a fastener configured to secure the top plate and the elastomer annular seal to the slip bowl such that the fastener is configured to be tightened to axially compress the elastomer annular seal between the top plate and the slip bowl to energize the elastomer annular seal;
- and
- a gland plate configured to be disposed axially between the top plate and the elastomer annular seal or axially between the elastomer annular seal and the slip bowl such that the fastener extends axially therethrough, wherein the fastener is configured to be tightened to compress the gland plate directly against the elastomer annular seal and the annular plate of the anti-extrusion device.
7 more elements
-22. (canceled)
-25. (canceled)
A system for oil and gas equipment, comprising:
- an anti-extrusion device comprising an annular lattice structure;
- and
- an annular plate integrated with the annular lattice structure, wherein the anti-extrusion device is used with an elastomer annular seal and wherein, when the elastomer annular seal is energized, one or more of the annular lattice structure or the annular plate is to deform and is to prevent the elastomer annular seal from extruding into extrusion gaps of the oil and gas equipment, wherein the annular plate comprises segments to reduce a load required to energize the elastomer annular seal.
-29. (canceled)
A wellhead system comprising a slip hanger, wherein the slip hanger comprises:
- a slip bowl;
- a top plate;
- an elastomer annular seal configured to be disposed axially between the slip bowl and the top plate;
- and
- an anti-extrusion device configured to be positioned along an outer circumference of the elastomer annular seal, wherein the anti-extrusion device comprises:
- an annular plate configured to be positioned toward the slip bowl or positioned toward the top plate;
- and
- an annular lattice structure configured to be disposed axially between the elastomer annular seal and the annular plate, wherein the anti-extrusion device is configured to be deformed when the elastomer annular seal is energized to facilitate blocking the elastomer annular seal from extruding into adjacent-extrusion gaps in the wellhead system;
- and
- another anti-extrusion device configured to be positioned along an inner circumference of the elastomer annular seal, wherein the another anti-extrusion device comprises:
- another annular plate configured to be positioned toward the top plate or the slip bowl;
- and
- another annular lattice structure configured to be disposed axially between the elastomer annular seal and the another annular plate, wherein the another anti-extrusion device is configured to be deformed when the elastomer annular seal is energized to block the elastomer annular seal from extruding into other adjacent extrusion gaps in the wellhead system.
10 more elements
A wellhead system comprising a slip hanger, wherein the slip hanger comprises:
- a slip bowl;
- a top plate;
- an elastomer annular seal configured to be disposed axially between the slip bowl and the top plate;
- and
- an anti-extrusion device comprising:
- an annular plate configured to be positioned toward the slip bowl or positioned toward the top plate;
- and
- an annular lattice structure configured to be disposed axially between the elastomer annular seal and the annular plate, wherein:
- the anti-extrusion device is configured to be deformed when the elastomer annular seal is energized to facilitate blocking the elastomer annular seal from extruding into adjacent-extrusion gaps in the wellhead system;
- and
- the anti-extrusion device is configured to be disposed within a notch in the elastomer annular seal that is formed:
- along an upper end of an outer circumference of the elastomer annular seal;
- along another upper end of an inner circumference of the elastomer annular seal;
- along a lower end of the outer circumference of the elastomer annular seal;
- or
- along another lower end of the inner circumference of the elastomer annular seal.
13 more elements
Dependencies are inferred from the claim text.