Canadian Fracmaster Ltd.

Lennard Sihlis

Donald A Smith

Andre Naumann

There is described an improved apparatus for azimuthal orientation of a tool in a wellbore. The apparatus comprises a tubular housing, a mandrel rotatably supported in the tubular housing and extending therefrom for connection to a tool for rotation thereof, a piston mandrel axially aligned with and connected to the mandrel, a piston longitudinally movable in an annulus between the piston mandrel and the tubular housing and being non-rotatable relative to the tubular housing, at least one pin longitudinally movable in concert with the piston arranged to track in respective helical grooves in the mandrel causing rotation of the mandrel in response to longitudinal movement of the pins, and a flow path for selective delivery of pressurized hydraulic fluid to either side of the piston for rotating the mandrel in either the clockwise or counterclockwise directions, or to both sides of the piston equally to maintain the mandrel in a fixed annular orientation.

Orienting tool for coiled tubing drilling

There is described an adjustable bent housing comprising a cylindrical housing having an uphole and a downhole end and a bore formed therethrough, the bore being divided into uphole and downhole portions axially offset to one another, and a tubular mandrel having an uphole and a downhole end, the ends being axially offset to one another. The downhole end of the mandrel is receivable along a portion of its length into the uphole portion of the bore in the housing for rotational movement relative to the cylindrical housing for varying the angle of bend between the mandrel and the cylindrical housing. Also provided is a locking mechanism comprising outer and inner concentric sleeves disposed annularly about the mandrel. The inner sleeve is axially movable relative to the mandrel in response to rotation of the outer sleeve between a first locked position wherein splines provided at one end of the inner sleeve are moved into contact with cooperating splines provided on the cylindrical housing and mandrel to prevent relative rotation therebetween, and a second unlocked position in which the splines disengage the cooperating splines on at least either the mandrel or the cylindrical housing to permit relative rotation therebetween.

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Calgary, Canada

Lennard Sihlis