Apparatus and method for selectively locking a downhole...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 49/00 (2006.01) E21B 34/12 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2227350

A downhole tool apparatus (34) comprising a housing (42) adapted to be connected in a pipe string (30), the housing (42) having a generally cylindrical bore (44) defined therein, an operating assembly (112) disposed within the cylindrical bore (44) of the housing (42) having open and closed positions and a mandrel (142) slidably received in the cylindrical bore (44) of the housing (42) and adapted to be selectively telescoped between first and second axial positions relative to the housing (42) to manipulate the operating assembly (112) and selectively rotated between first and second circumferential positions relative to the housing (42) to selectively lock the mandrel (142) in an axial position relative to the housing (42).

Appareil pour outil fond de trou (34) avec logement (42) adapté pour être raccordé à une colonne de tubes (30), le logement (42) comprenant un alésage généralement cylindrique (44) défini dans le logement, un ensemble de manoeuvre (112) disposé à l'intérieur de l'alésage cylindrique (44) du logement (42) ayant des positions ouverte et fermée ainsi qu'un mandrin (142) installé par coulissement dans l'alésage cylindrique (44) du logement (42) et adapté pour être sélectivement télescopé entre une première et une deuxième positions axiales par rapport aulogement (42) pour manipuler l'ensemble de manoeuvre (112) et tourné sélectivement entre une première et une deuxième positions périphériques par rapport au logement (42) afin de verrouiller sélectivement le mandrin (142) dans une position axiale par rapport au logement (42).

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