FIELD: oil and gas industry.
SUBSTANCE: borehole tool for the use in drilling of the subterranean borehole includes a torque actuator, containing the outer casing and the inner mandrel, having at least one longitudinal disposed recess, each of which includes the dog and the linear bearing, contacting with substantially parallel opposite sides of the dog and providing the possibility of the radial dog displacement and due to this the selective provision of the possibility and prevention of relative rotation between the inner mandrel and the outer housing.
EFFECT: reduction of the frictional engagement with parallel sides of the dogs.
24 cl, 12 dwg
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