Abstract: A bearing assembly for an electrical motor of an ESP pump assembly comprising an outer bearing sleeve with an inner surface and an anti-rotation device rotationally coupling the outer sleeve to a stator and an inner bearing sleeve with an outer surface and an anti-rotation device coupling the inner bearing sleeve to a drive shaft. A fluid film gap located between the outer surface and the inner surface generates a high pressure zone and a low pressure zone in response to a rotational motion of the inner bearing sleeve relative to the outer bearing sleeve. The high pressure zone generates a fluid exit zone and the low pressure zone generates a fluid inlet zone for the working volume of fluid within the fluid film gap. A fluid supply path with ports at the sides of the bearing can exchange a volume of cooling fluid with the volume of working fluid within the fluid film.

Abstract: Stators in downhole ESP motors often are used in the sorts of high temperature operations in which rigid, inorganic insulation may prove useful. However, such rigid insulation materials may have inherent manufacturability issues which can limit usage, for example in elongated motors of the sort often used with downhole electrical submersible pumps. Disclosed embodiments provide solutions for effectively insulating conductor portions in the slots of a stator lamination in an ESP motor, and for effectively manufacturing, managing inventory for, and assembling improved stators.

Abstract: Rotor bearings for ESP motors can include anti-rotation tabs configured to engage, for example between a bearing bushing and a stator of the ESP motor. For example, prior to insertion of the rotor bearing within the stator, the anti-rotation tabs may be held in place within axial slots in the outer surface of a bearing bushing using one or more retaining plates. The retaining plates and the bearing bushing may be configured to allow for axial insertion of the retaining plates onto the bearing bushing and then rotation of the retaining plate with respect to the bearing bushing to retain the anti-rotation tab on the bearing bushing. Such systems and methods may be particularly useful for ceramic bearing bushings.

Abstract: Disclosed rotor assemblies can be configured to address differential thermal expansion in the rotor assembly during ESP motor use. Some rotor assembly embodiments can employ an improved stacking technique to minimize differential thermal expansion issues by removing certain components from the axial stack of supporting components of the rotor assembly. Alternatively, or in conjunction, some rotor assembly embodiments can use a biasing element which is configured to compensate for the differential axial thermal expansion, tolerance stack-up, and/or gravity.

Abstract: A seal mechanism for an electric submersible pump (ESP) assembly comprising a graphite ring installed on a first component with an installation configuration and a sealing configuration. The graphite ring is installed on an external sealing surface of a first component. An internal sealing surface of a second component is aligned with the graphite ring. An activation force transitions the graphite ring from the installation configuration to a sealing configuration wherein the graphite ring forms a seal to the external sealing surface of the first component and the internal sealing surface of the second component.

Abstract: A connector assembly comprising a pin connector assembly, a socket connector assembly, and an insulating member. The pin connector assembly comprises a generally cylindrical shape with an outer surface, an inner spring, and mechanically coupled to an electrical cable. The socket connector assembly comprises a generally cylindrical in shape with an inner surface, an outer spring, and mechanically coupled to an electrical cable. The contact surface stress between the pin connector and socket connector can be increased by the inner spring, the outer spring, or both. The contact resistance of the connectors is reduced by the increase in contact surface stress via the spring force. The insulating member can be threadingly coupled to the mated connectors.

Abstract: A bearing assembly for an electrical motor of an ESP pump assembly comprising an outer bearing sleeve with an inner surface and an anti-rotation device rotationally coupling the outer sleeve to a stator and an inner bearing sleeve with an outer surface and an anti-rotation device coupling the inner bearing sleeve to a drive shaft. A fluid film gap located between the outer surface and the inner surface generates a high pressure zone and a low pressure zone in response to a rotational motion of the inner bearing sleeve relative to the outer bearing sleeve. The high pressure zone generates a fluid exit zone and the low pressure zone generates a fluid inlet zone for the working volume of fluid within the fluid film gap. A fluid supply path with ports at the sides of the bearing can exchange a volume of cooling fluid with the volume of working fluid within the fluid film.

Abstract: An electric submersible pump (ESP) electric motor. The ESP electric motor comprises a drive shaft; a first metal compliance ring located around the drive shaft; a second metal compliance ring located around the drive shaft; a first bearing sleeve located around the drive shaft, located around the first metal compliance ring, and located around the second metal compliance ring, wherein there is an interference fit between the inside of the first bearing sleeve and the first metal compliance ring and between the inside of the first bearing sleeve and the second metal compliance ring; and a second bearing sleeve located around the first bearing sleeve and located inside an inner bore of a stator of the electric motor.

Abstract: The present invention relates to a method of increasing a measure of a production trait in a non-ruminant animal by administering a red seaweed of Asparagopsis species to the animal.

Abstract: The present invention is concerned with boosting innate immunity in animals with an immune system that includes an alternative complement pathway in which they are fed an effective amount of a red seaweed of Asparagopsis species.