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US 2001/0011591 A1Published application
Guide device
OwnerHector F. A. Van-Drentham Susman, Kenneth R. Stewartinventors
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OwnerHector F. A. Van-Drentham Susman, Kenneth R. Stewartinventors
Estimating the term…
The present invention provides an active downhole cutting tool guide device 14 for use in a hole 17 with sides between which a hole-cutting tool 15 mounted on a drill string and provided with said device may be disposed. The guide device 14 comprises at least one elongate longitudinally extending hole-side engagement member 20 mounted on a body 19 disposable, in use of the device, in-line with the drill string, so as to be movable relative to said body 19 between a retracted position and a radially outwardly displaced position for hole-side engagement. Each engagement member 20 has pressurised-fluid operable actuator means 24 formed and arranged for driving said hole-side engagement member 20 between its retracted and hole-aide engagement positions. The guide device 14 includes preasurised fluid supply means 28,18 formmed and arranged for controlling the supply of pressurised fluid to the actuator means 28,18 for operation thereof. In use of the guide device 14 the hole-cutting tool 15 may be directed relative to the central longitudinal axis of the hole 17 in which the tool 15 is disposed.
An active downhole cutting tool guide device for use in a hole with sides between which a hole-cutting tool mounted on a drill string and provided with said device may be disposed, said device comprising at least one elongate longitudinally extending hole-side engagement member mounted on a body, which body is disposable, in use of the device, in-line with the drill string, so as to be movable relative to said body between a retracted position and a generally radially outwardly displaced position for hole-side engagement, each said at least one engagement member having presourised-fluid operable actuator means formed and arranged for driving said hole-side engagement metber between said retracted and hole-side engagement positioned said device including pressurised fluid supply means formed and arranged for controlling the supply of pressurized fluid, in use of the device, to said actuator means for operation thereof, whereby in use of the device a said hole-cutting tool may be directed relative to the central longitudinal axis of the hole in which said tool is disposed.
Dependencies are inferred from the claim text.