Tools and methods for hanging and/or expanding liner strings

Details Tools and methods for hanging and/or expanding liner strings Tools and methods for hanging and/or expanding liner strings

E - Fixed Constructions

21

B

E21B 43/10 (2006.01)

Patent

CA 2722608

Embodiments of the invention generally relate to tools and methods for hanging and/or expanding liner strings. In one embodiment, a method of hanging a liner assembly from a previously installed tubular in a wellbore includes running the liner assembly and a setting tool into the wellbore using a run-in string. The setting tool includes an isolation valve and the liner assembly includes a liner hanger and a liner string. The method further includes sending an instruction signal from the surface to the isolation valve, wherein the isolation valve closes in response to the instruction signal and isolates a setting pressure in the setting tool from the liner string; and increasing fluid pressure in the setting tool, thereby setting the liner hanger.

Dans des modes de réalisation, la présente invention concerne généralement des outils et des procédés pour suspendre et/ou agrandir des trains de colonnes perdues. Dans un mode de réalisation, un procédé pour suspendre un ensemble colonne perdue à partir dun élément tubulaire installé auparavant dans un forage consiste à insérer lensemble colonne perdue et un outil de mise en place dans le forage à laide dun train de tiges dentraînement. Loutil de mise en place comprend une soupape disolation et lensemble colonne perdue comprend un dispositif de suspension de colonne perdue et un train de colonne perdue. Le procédé consiste en outre à envoyer un signal dinstruction de la surface à la soupape disolation, la soupape disolation se fermant en réponse au signal dinstruction et isolant une pression de mise en place dans loutil de mise en place à partir du train de colonne perdue ; et à augmenter la pression dans loutil de mise en place, pour ainsi mettre en place le dispositif de suspension de colonne perdue.

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