System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing
AssigneeSchlumberger Technology Corporation
InventorsYouel G. Hilsman, Herve Ohmer, Dinesh R. Patel, Stephane Hiron
Life of this patent
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Abstract
The invention is a system and method used to seal between an open wellbore and a tubing by bringing the wellbore wall inwardly so as to enable sections of earth from the wellbore wall to create the required seal against the tubing. The earth sections that make up the seal can be created by collapsing the relevant parts of the wellbore wall inwardly or by causing the relevant parts of the wellbore wall to swell inwardly.
Claims26
A method to seal between a subterranean open wellbore wall and an interior tubing, comprising selectively bringing earth material of the subterranean wellbore wall inwardly towards the tubing to form a seal between the wellbore wall and the tubing.
A method to seal between a subterranean open wellbore wall and an interior tubing, comprising bringing the wall inwardly towards the tubing to form a seal between the wellbore wall and the tubing by mechanically unloading a section of the wellbore.
A system for sealing between a subterranean open wellbore wall and an interior tubing, comprising a sealing unit adapted to move a wall of earth material inwardly towards the tubing to form a seal between the wellbore wall and the tubing.
Dependencies are inferred from the claim text.