Canrig Drilling Technology Ltd.

Friedhold Brost

Douglas Andrew Hunter

Larry M Fikowski

Glenda Fikowski, Legal Representative

Martin Thieme

A pipe-handling apparatus adapted to move pipe to and from a drilling floor of a drilling rig including a ramp extendable between a main support structure and the drilling floor, a pipe carrier mounted on the main support structure configured to move between lower and elevated positions over the ramp, a lift arm including a first end and a second end and being pivotally connected at its first end adjacent the far end of the carrier and operable below the carrier to lift and support the carrier's far end to an elevated position, a track on the main support structure for supporting the carrier and the lift arm, and a drive system that pivots or moves the lift arm up about a track stop to lift the far end of the carrier and moves the near end up and over the ramp.

Pipe-handling apparatus and methods

An oilfield tubular torque wrench and a tong therefore is described. In one aspect, a torque wrench is described including an upper tong including a recess for accepting an oilfield tubular positioned along an axis passing through the recess; a lower tong including a recess positioned below the recess of the upper tong so that the axis passes therethrough; pipe gripping dies in the recesses of the upper tong and the lower tong drivable toward and away from the axis; a swivel bearing between the upper tong and the lower tong permitting the upper tong and the lower tong to swivel relative thereto while the recesses remain positioned with the axis passing therethrough, the swivel bearing including a first partial ring mounted to one of the upper tong and the lower tong and a second partial ring mounted on the other of the upper tong and lower tong, the second partial ring being interengaged at a bearing surface to ride along a length of a bearing surface of the first partial ring; and a retainer ring positioned adjacent one of the first partial ring and the second partial ring to act against lateral disengagement of the second partial ring from the first partial ring. In another aspect, dissimilar materials are selected for the first ring and the second ring to avoid galling. In another aspect a tong with adjustable dies is described.

Oilfield tubular torque wrench

A pipe-handling apparatus for moving a pipe to and from a drilling floor of a drilling rig includes a main support structure, a ramp extendable between the main support structure and the drilling floor, a pipe carrier mounted on the main support structure for moving relative thereto between a lower position and an elevated position over the ramp, the carrier including a ramp end adjacent the ramp, an far end, and an elongate indentation on its upper surface to accommodate a pipe therein, a lift arm including a first end and a second end, the lift arm being pivotally connected at its first end adjacent the far end of the carrier and operable below the carrier to lift and support the carrier's far end to an elevated position, a track on the main support structure for supporting axial sliding motion of the carrier and the lift arm therealong, the track including a stop for limiting axial movement of the second end of the lift arm along the track toward the ramp, and a drive system for pulling the carrier from the lower position to ride along the ramp to an elevated position, the drive system capable of pulling the lift arm along the track until it is stopped against the stop in track and to continue pulling to cause the lift arm to be pivoted up about the stop to lift the far end of the carrier.

Growing community of inventors

Sidney, Canada

Friedhold Brost