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US 2010/0147535 A1Published application
Expandable Liner Hanger
AssigneeRead Well Services Limited
InventorsAndrew Gorrara, Peter Wood, Paul Hazel
Life of this patent
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AssigneeRead Well Services Limited
InventorsAndrew Gorrara, Peter Wood, Paul Hazel
Estimating the term…
A downhole expandable liner hanger apparatus for extending the length of an existing tubular such as a casing or liner string is described. The apparatus comprises a tubular portion and a securing and/or sealing means for securing the tubular portion to the existing tubular such as a casing string to thereby extend the length of the existing tubular and preferably simultaneously provide a sealed coupling between the tubular portion and the existing tubular. A first part or a length of the tubular portion preferably comprises a first sidewall thickness and a second part or length of the tubular portion is located adjacent the first part, where the second part comprises a second sidewall thickness, said first sidewall thickness being less than the second sidewall thickness.
An apparatus for extending the length of an existing tubular, the apparatus comprising a tubular portion and a securing and sealing means for securing the tubular portion to the existing tubular to thereby extend the length of the existing tubular and simultaneously provide a sealed coupling between the tubular portion and the existing tubular.
A method of extending the length of an existing tubular, comprising the steps of:
A method according to, wherein the method further comprises radially expanding the tubular portion and the adjacent existing tubular such that there is residual interfacial contact between the tubular portion and the existing tubular once the pressure is removed.
An apparatus for sealing a tubular portion to another tubular, the apparatus comprising:
Dependencies are inferred from the claim text.