Expandable open-hole anchor
AssigneeWeatherford Technology Holdings, LLC
InventorsVaradaraju Gandikota, Larry A. Kendziora, Richard Lee Giroux
Life of this patent
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Abstract
The present invention generally relates to an apparatus and method for expanding an anchoring device in a borehole. In one aspect, an anchoring device is provided. The anchoring device includes an expandable tubular. The anchoring device further includes a plurality of bands disposed on an outer surface of the expandable tubular. Each band is attached to the tubular at a first connection point and a second connection point, wherein each band is configured to bow radially outward as the expandable tubular shortens in length in response to the expansion of the tubular. In a further aspect, a method of attaching an anchoring device in a borehole is provided.
Claims17
An anchoring device comprising:
- an expandable tubular;
- and
- a plurality of bands disposed on an outer surface of the expandable tubular, each band being attached to the tubular at a first connection point and a second connection point, wherein each band is configured to bow radially outward as the expandable tubular shortens in length in response to the expansion of the tubular, and wherein a first set of the plurality of bands has a length different than a length of a second set of the plurality of bands.
A method of attaching an anchoring device in a borehole, the method comprising:
- positioning the anchoring device in the borehole, the anchoring device having a tubular and a plurality of bands disposed on an outer surface the tubular, wherein a first set of the plurality of bands has a length different than a length of a second set of the plurality of bands;
- and
- reducing the axial length of the tubular by expanding the tubular radially outward, wherein the reduction of axial length of the tubular causes the plurality of bands to bow radially outward into contact with the borehole.
Dependencies are inferred from the claim text.