Abstract: An isolator (200) has an outer housing (224) comprising an outer housing bore (234), an inner member (240) received coaxially within the outer housing (224), a precompressed compression compliance component (CCC) (230) disposed between the outer housing (224) and the inner member (240), the CCC (230) being configured to bias the inner member (240) in an axial direction, and a precompressed rebound compliance component (RCC) (232) disposed between the outer housing (224) and the inner member (240), the RCC (232) being configured to bias the inner member (240) in an opposite axial direction.

Abstract: A riser tensioner system has a riser support device, an actuator, and a bearing assembly disposed between the riser support device and the actuator. The bearing assembly is configured to provide at least five degrees of freedom of movement of the riser support device relative to the actuator.

Abstract: Systems and methods are disclosed that include providing an isolating mule shoe having an integrated axial isolator coupled to a landing sleeve of a drill string at an upper end of the axial isolator. The axial isolator includes an elastomeric component that is coupled between a first component and a second component. The first component and the second component are configured to displace axially with respect to one another as a result of a force imparted upon the landing sleeve to provide vibration control.

Abstract: An isolator (200) has an outer housing (224) comprising an outer housing bore (234), an inner member (240) received coaxially within the outer housing (224), a precompressed compression compliance component (CCC) (230) disposed between the outer housing (224) and the inner member (240), the CCC (230) being configured to bias the inner member (240) in an axial direction, and a precompressed rebound compliance component (RCC) (232) disposed between the outer housing (224) and the inner member (240), the RCC (232) being configured to bias the inner member (240) in an opposite axial direction.

Abstract: Embodiments relate generally to gimbal bearings for installation of a riser string. Gimbal bearing embodiments comprise a top ring and a bottom ring, with a plurality of high capacity laminate bearings located therebetween, the high capacity laminate bearings comprising at least one of natural rubber and a marker layer. Each high caparity laminate bearing might comprise alternating layers of steel shims and elastomeric elements bonded together via adhesive. Embodiment designs provide for improved gimbal bearing characteristics, which may improve the effective lifespan of such gimbal bearings.

Abstract: A fluid conduit connection system includes a bearing assembly comprising a bearing pipe comprising a fluid flow path, and a bearing element stack located exterior to the bearing pipe and disposed substantially annularly about the bearing pipe, wherein the bearing element stack is configured to receive a compressive force from the bearing pipe and wherein the bearing element stack is configured to allow rotation of the bearing pipe about a center of rotation of the bearing assembly.

Abstract: Systems and methods are disclosed that include providing an isolating mule shoe having an integrated axial isolator coupled to a landing sleeve of a drill string at an upper end of the axial isolator. The axial isolator includes an elastomeric component that is coupled between a first component and a second component. The first component and the second component are configured to displace axially with respect to one another as a result of a force imparted upon the landing sleeve to provide vibration control.

Abstract: A torsional isolator (200, 300, 400) designed to reduce vibrations and shock experienced by electronics used during directional drilling is disclosed. The torsional isolator allows the drillstring electronics to oscillate at a slower rotational velocity than the data acquisition rate of associated sensors, such that the sensors record an average value of the azimuth heading thereby allowing for a higher accuracy measurement of the azimuth heading. The sample rate of the sensors is such that the sensors maximum error is reduced by the torsional isolator, as the output angular displacements are lower than the input angular displacements.

Abstract: A coupling suitable for transmitting torque applied to a first input to a second input shaft wherein the coupling accommodates angular changes between the input shafts. Additionally, the disclosure describes an improved mud motor transmission incorporating the coupling.

Abstract: An isolator has a force input component, a force output component, a first shear unit connected between the force input component, and a second shear unit connected between the force output component, wherein the first shear unit and the second shear unit are connected in series with each other along a force path between the force input component and the force output component.