One illustrative method disclosed herein includes positioning a first tubular adjacent a second tubular, wherein one of the first and second tubulars includes a plurality of radially deflectable fingers formed in an end thereof, mating the first and second tubulars into mated engagement with one another, wherein, during the mating of the first and second tubulars, the radially deflectable fingers deflect in a radial direction, and expanding the first and second tubulars by forcing an expansion mandrel through the mated first and second tubulars such that the expanded first and second tubulars have an expanded inside diameter that is greater than an initial inside diameter of the first and second tubulars.

Apparatus and method for sealingly connecting tubular members in a wellbore. In an arrangement where a portion of a tubular member is radially expanded into sealing contact within a second tubular member, and the second tubular member has circumferential recesses on an inner surface, a resilient member protrudes from a side wall of the recesses. The resilient member is acted on by the portion of the tubular member during expansion and maintains sealing contact to the portion after expansion.

Apparatus and method for sealingly connecting tubular members in a wellbore. In an arrangement where a portion of a tubular member is radially expanded into sealing contact within a second tubular member, and the second tubular member has circumferential recesses on an inner surface, a resilient member protrudes from a side wall of the recesses. The resilient member is acted on by the portion of the tubular member during expansion and maintains sealing contact to the portion after expansion.

An interference apparatus is provided for a motor shaft transmission assembly. The interference apparatus may include split-ring shells and a retaining device. The interference apparatus may be mounted to an intermediate sleeve of the motor shaft transmission assembly. The interference apparatus is configured to prevent the loss of certain motor shaft transmission assembly components downhole in the event of a failure of the motor transmission due to dynamic loads.

A modular foundation support system includes modular foundation support components including self-aligning and torque transmitting coupler features wherein a plurality of\elongated ribs are aligned with a plurality of elongated grooves to rotationally interlock the modular foundation support components to one another.

A modular foundation support system includes modular foundation support components including self-aligning and torque transmitting coupler features wherein a plurality of\elongated ribs are aligned with a plurality of elongated grooves to rotationally interlock the modular foundation support components to one another.

A axial retention connection for a downhole tool is disclosed. The connection includes a drill string component including a socket having a plurality of walls and a top surface. The connection additionally includes a downhole tool coupled to the socket, the downhole tool including a male-type connector having an outer perimeter and a top surface. The connection further includes a seal between the drill string component and the downhole tool. The connection further includes a chamber formed by the plurality of walls and the top surface of the socket and the top surface of the male-type connector; and a fluid filling the chamber.

A axial retention connection for a downhole tool is disclosed. The connection includes a drill string component including a socket having a plurality of walls and a top surface. The connection additionally includes a downhole tool coupled to the socket, the downhole tool including a male-type connector having an outer perimeter and a top surface. The connection further includes a seal between the drill string component and the downhole tool. The connection further includes a chamber formed by the plurality of walls and the top surface of the socket and the top surface of the male-type connector; and a fluid filling the chamber.

A universal joint, having a first joint member with longitudinally extending arms, each arm having one or more contact surfaces and a second joint member with longitudinally extending arms, where each arm includes one or more contact surfaces. The universal joint also includes one or more independent contact objects disposed between a contact surface of the first joint member and a contact surface of the second joint member. The universal joint also includes a load rod disposed in an axial channel between the first joint member and the second joint member.

A universal joint assembled in a drill string transfers torque between two components where rotation of the components may not be completely aligned. The universal joint includes upper and lower members with radial teeth connected by a serpentine retainer. As the joint rotates the members can pivot within the confines of the serpentine retainer to accommodate misalignment of the components. Axial force can be transferred through a bearing member between the members.