Abstract: A composition including a high temperature thermoplastic polymer and a filler material is disclosed. A method for forming a coating upon a wellbore tool includes forming a powder composition comprising a thermoplastic polymer and a filler material and applying the composition on the body surface. Wellbore tools having components coated with such compositions are also disclosed.

Abstract: A composition including a high temperature thermoplastic polymer and a filler material is disclosed. A method for forming a coating upon a wellbore tool includes forming a powder composition comprising a thermoplastic polymer and a filler material and applying the composition on the body surface. Wellbore tools having components coated with such compositions are also disclosed.

Abstract: A diamond bearing assembly comprises a support ring having at least one diamond bearing segment attached thereto. A plurality of bearing pads are disposed on the diamond bearing segment. The plurality of bearing pads have a plurality of flow micro-channels between the bearing pads. A flow channel is disposed in the support ring proximate the bearing segment, wherein the flow channel has a fluid flowing therethrough for cooling the bearing segment. In another aspect, a method of cooling a diamond bearing comprises disposing a plurality of bearing pads on a diamond bearing segment. The diamond bearing segment are attached to a support ring. A fluid flows through a substantially radial channel in the support ring to cool the diamond bearing segment.

Abstract: A diamond bearing assembly comprises a support ring having at least one diamond bearing segment attached thereto. A plurality of bearing pads are disposed on the diamond bearing segment. The plurality of bearing pads have a plurality of flow micro-channels between the bearing pads. A flow channel is disposed in the support ring proximate the bearing segment, wherein the flow channel has a fluid flowing therethrough for cooling the bearing segment. In another aspect, a method of cooling a diamond bearing comprises disposing a plurality of bearing pads on a diamond bearing segment. The diamond bearing segment are attached to a support ring. A fluid flows through a substantially radial channel in the support ring to cool the diamond bearing segment.

Abstract: A thrust bearing comprises at least one diamond bearing segment, wherein the segment has a front surface and a back surface. A plurality of bearing pads extend a predetermined distance from the front surface, each of the plurality of bearing pads has a load surface substantially parallel to the front surface. The plurality of bearing pads act cooperatively to provide a load bearing surface area. The bearing pads are shaped and arranged in a predetermined pattern to enhance the load carrying surface area, and the predetermined pattern creates a plurality of flow micro-channels between the bearing pads. In another aspect, a thrust bearing comprises a diamond bearing surface, and a predetermined pattern of cavities formed in the diamond bearing surface for providing a fluid reservoir for lubricating and cooling the load surface.