초록 ▼

A disconnect tool includes a housing that has a first segment and a second segment. A first collet is coupled to the first segment and has a first plurality of fingers, each of the first plurality of fingers is bendable between a first position in which the fingers engage the first segment and preve

A disconnect tool includes a housing that has a first segment and a second segment. A first collet is coupled to the first segment and has a first plurality of fingers, each of the first plurality of fingers is bendable between a first position in which the fingers engage the first segment and prevent relative sliding movement between the first and second segments, and a second position in which the fingers do not engage the first segment and do not prevent relative sliding movement between the first and second segments. A first piston is positioned in the housing and has a third position wherein the piston engages and prevents the fingers from bending from the first position, and a fourth position wherein the piston does not engage and prevent the fingers from bending from the first position. The disconnect tool includes means for selectively retaining the first piston in the third position and means for moving the first piston from the third position to the fourth position. On-board and surface control systems may be incorporated to permit selective active of the disconnect mechanism. In addition, couplings and connector employing shape-memory materials may be included to secure the tool to coiled tubing, and a wireline.

대표청구항 ▼

1. A coupling for connecting to an end of a member, comprising:a housing having a longitudinal bore for receiving the end of the member; a collet coupled to the housing and disposed in the bore, the collet having a plurality of bendable fingers, and each of the fingers including a projecting tooth t

1. A coupling for connecting to an end of a member, comprising:a housing having a longitudinal bore for receiving the end of the member; a collet coupled to the housing and disposed in the bore, the collet having a plurality of bendable fingers, and each of the fingers including a projecting tooth to engage the end of the member; and an annular member positioned around the plurality of fingers and being composed of a shape-memory material, the annular member being deformable in situ from a temporary shape to a permanent shape in which the annular member squeezes the plurality of fingers into engagement with the end of the member, and wherein the tooth is outwardly projecting to engage an interior of the end of the member.