Downhole backup system and method
AssigneeBaker Hughes Incorporated
InventorsDavid S. Bishop, Marc N. Samuelson
Life of this patent
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Abstract
A downhole backup system includes, a tubular positionable within a downhole structure such that an annular space exists between the tubular and the downhole structure. The downhole backup system also includes, a plurality of wedges that are radially movably positioned within the annular space, and 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.
Claims19
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 each of the plurality of wedges having wings on opposing longitudinal ends and oriented in opposite directions, 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.
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 with wings on opposing longitudinal ends oriented in opposite directions disposed at each of the plurality of wedges.
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 each of the plurality of wedges with wings oriented in opposite directions.
Dependencies are inferred from the claim text.