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US 2010/0071908 A1Published application
Downhole backup system and method
AssigneeBaker Hughes Incorporated
InventorsDavid S. Bishop, Marc N. Samuelson
Life of this patent
Estimating the term…
Abstract
A downhole backup system including, a tubular positionable within a downhole structure such that an annular space exists between the tubular and the downhole structure, and a plurality of wedges that are radially movably positioned within the annular space, each of two opposing ends of the plurality of wedges are configured to completely cover the annular space at all possible radial positions of the plurality of wedges.
Claims20
A downhole backup system, comprising:
- a tubular positionable within a downhole structure such that an annular space exists between the tubular and the downhole structure;
- a plurality of wedges being radially movably positioned within the annular space, each of two opposing ends of the plurality of wedges being configured to completely cover the annular space at all possible radial positions of the plurality of wedges;
- and
- a plurality of ramps in operable communication with the plurality of wedges such that axial movement of the plurality of ramps causes the plurality of wedges to move radially.
1 more element
A method of backing up seals at a downhole tool, comprising;
- moving a plurality of ramps axially;
- moving a plurality of wedges radially;
- and
- covering perimetrical gaps between adjacent wedges on both longitudinal ends with wings disposed at the plurality of wedges.
1 more element
A method of occluding a downhole annular space, comprising:
- axially moving a plurality of ramps;
- radially moving a plurality of wedges positioned in the downhole annular space;
- and
- occluding the downhole annular space at both opposing ends of the plurality of wedges.
1 more element
Dependencies are inferred from the claim text.