Abstract: An example apparatus for controlling the direction of drilling a borehole includes a housing and a radially offsetable drive shaft at least partially within the housing. The apparatus may further include one or more pusher extendable from the housing. The one or more pusher may be extendable in response to a radial offset in the offsetable drive shaft with respect to a longitudinal axis of the housing.

Abstract: An example apparatus for controlling the direction of drilling a borehole includes a housing and a radially offsetable drive shaft at least partially within the housing. The apparatus may further include one or more pusher extendable from the housing. The one or more pusher may be extendable in response to a radial offset in the offsetable drive shaft with respect to a longitudinal axis of the housing.

Abstract: An example apparatus for controlling the direction of drilling a borehole includes a housing and a radially offsetable drive shaft at least partially within the housing. The apparatus may further include one or more pusher extendable from the housing. The one or more pusher may be extendable in response to a radial offset in the offsetable drive shaft with respect to a longitudinal axis of the housing.

Abstract: A cutter for a drill bit includes a substrate defining a hole at least partially through the substrate. A diamond table including a protrusion is received within the hole such that a gap is defined between the protrusion and the substrate ranging between 0.001 and 0.010 inches when the substrate and diamond table are at standard temperature and pressure (STP). A braze alloy couples the diamond table to the substrate at an interface between the diamond table and the substrate. At least a portion of the braze alloy is disposed in the gap in compression between the protrusion on the diamond and the hole in the substrate.

Abstract: An example apparatus for controlling the direction of drilling a borehole includes a housing and a radially offsetable drive shaft at least partially within the housing. The apparatus may further include one or more pusher extendable from the housing. The one or more pusher may be extendable in response to a radial offset in the offsetable drive shaft with respect to a longitudinal axis of the housing.

Abstract: A string stretcher has a body with a stretcher axis of rotation about which to rotate the string stretcher when positioned transverse to the fingerboard. At least one support member has an upwardly facing support surface for selectively urging and holding the selected string above the fingerboard. A first stretching member has a first stretching surface spaced from the stretcher axis of rotation for contacting the selected string at a first string location to urge the selected string across the fingerboard in a first direction during rotation. A second stretching member has a second stretching surface oppositely facing with respect to the first stretching surface, for contacting the selected string at a second string location opposite the stretcher axis of rotation from the first stretching surface to urge the selected string across the fingerboard in a second direction substantially opposite the first direction.