Contractable and expandable tubular wellbore system

Details Contractable and expandable tubular wellbore system Contractable and expandable tubular wellbore system

2006-12-26

2006-12-26

Gay, Jennifer H. (Department: 3672)

Wells

Expansible anchor or casing

Expansible casing

C166S242200, C166S277000, C138S118100

Reexamination Certificate

active

07152673

ABSTRACT:
A tubular system arranged in a wellbore, having an outer tube extending into the wellbore and a wall with at least one section of reduced bending stiffness, each section defining a hinge allowing the outer tube to move between a collapsed mode and an expanded mode. An inner tube extends into the outer tube and has a wall with at least one section of reduced bending stiffness, each section defining a hinge allowing the inner tube to move between a collapsed mode and an expanded mode. With the tubes in their respective expanded modes, the inner tube supports the outer tube and is oriented in the outer tube such that each hinge of the inner tube is circumferentially displaced from each hinge of the outer tube.

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patent: 99/56000 (1999-11-01), None
patent: 00/26502 (2000-05-01), None

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