Apparatus comprising expandable bistable tubulars and methods for their use in wellbores
First Claim
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1. A system of expandable tubulars, comprising:
- a first bistable expandable tubular;
a second bistable expandable tubular; and
a connector system coupling the first bistable expandable tubular to the second bistable expandable tubular, the connector system having a plurality of interlocking extensions comprising receiving extensions and insertion extensions, each receiving extension having a connector opening with a narrow outer portion and a wider inner portion to interlockingly receive a corresponding insertion extension.
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Abstract
At least a first expandable tubular and a second expandable tubular are connected to each other by a connector system. The connector system is expandable and utilizes a plurality of extensions that may be used to create an interlocking engagement. The system design enables both the tubulars and the connector system to be expanded to an increased diameter.
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Citations
20 Claims
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1. A system of expandable tubulars, comprising:
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a first bistable expandable tubular; a second bistable expandable tubular; and a connector system coupling the first bistable expandable tubular to the second bistable expandable tubular, the connector system having a plurality of interlocking extensions comprising receiving extensions and insertion extensions, each receiving extension having a connector opening with a narrow outer portion and a wider inner portion to interlockingly receive a corresponding insertion extension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for use in a wellbore, comprising:
an expandable tubular having a plurality of bistable cells and an expandable connector end formed with a plurality of extensions, wherein the expandable tubular comprises a threaded connector end generally opposite the expandable connector end. - View Dependent Claims (11)
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12. A method of expanding tubulars, comprising:
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forming a first tubular from a plurality of bistable cells; coupling the first tubular by a plurality of interlocking extensions; and radially expanding the plurality of interlocking extensions during expansion of the first tubular and the second tubular. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of expanding tubulars, comprising:
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forming a first tubular and a second tubular from a plurality of bistable cells; coupling the first tubular to the second tubular by a plurality of interlocking extensions; and radially expanding the plurality of interlocking extensions during expansion of the first tubular and the second tubular, wherein the coupling comprises axially moving the plurality of interlocking extensions into engagement and rotating the second tubular with respect to the first tubular.
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19. A system for expanding tubulars, comprising:
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means for coupling a first bistable tubular to a second bistable tubular with a plurality of interlocking extensions that automatically interlock upon linear movement of the first bistable tubular into engagement with the second bistable tubular; and means for radially expanding the plurality of interlocking extensions during expansion of the first bistable tubular and the second bistable tubular. - View Dependent Claims (20)
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Specification