A downhole tool for use in a wellbore

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 34/08 (2006.01) E21B 21/10 (2006.01) E21B 23/04 (2006.01)

Patent

CA 2486682

The present invention provides a method and an apparatus for use in a wellbore tool. The apparatus includes a body (115) and a sliding member (155), wherein the sliding member and a mechanical portion (250) moves between a first position and a second position. A valve assembly (210) causes the sliding member and mechanical portion to shift to its second position at a predetermined flow rate of fluid through the body. The invention also provides an apparatus for a downhole tool that includes a mandrel and a sliding member disposed on the mandrel. The sliding member including a plurality of fingers (285) and a plurality of heads (275), wherein the plurality of fingers are slideably recessed within a plurality of longitudinal grooves (355). The invention further provides a collet assembly that includes a body and at least two extendable members (275), whereby as the members extend outward, the members are rotated.

La présente invention a trait à un procédé et un appareil pour utilisation dans un outil de fond de puits de forage. L'appareil comporte un corps (115) et un organe coulissant (155), dans lequel l'organe coulissant et une partie mécanique (250) se déplacent entre une première position et une deuxième position. Un ensemble de soupapes (210) fait passer l'organe de coulissement et la partie mécanique vers la deuxième position à un débit prédéterminé de fluide à travers le corps. L'invention a trait également à un appareil pour un outil de fond qui comporte un mandrin et un organe de coulissement disposé sur le mandrin. L'organe de coulissement comporte une pluralité de doigts (285) et une pluralité de têtes (275), dans lequel la pluralité de doigts peuvent se rétracter en coulissement au sein d'une pluralité de rainures (335). L'invention a trait en outre à un ensemble de pinces qui comporte un corps et au moins deux organes extensibles (275), et lors du déploiement des organes vers l'extérieur, le organes sont entraînés en rotation.

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