Abstract: An anti-extrusion ring for a packer assembly comprises first and second ring portions that are divided into a plurality of discrete arcuate segments. The segments are adapted for movement between a retracted position wherein each segment is in contact with adjacent segments, and an expanded position wherein gaps are formed between the segments. At least one of the ring portions is adapted to face a resilient sealing sleeve of the packer assembly. The first ring portion is circumferentially offset from the second ring portion such that at least one of the first and second ring portions extends across the gaps during movement of the segments toward the expanded position. In this manner, extrusion of the sealing sleeve through the gaps is prevented.

Abstract: Methods of manufacturing an electrical connector for use in a downhole tool are described. The methods include placing or molding a dielectric body around a conductor, thereby forming an electrical connector. The dielectric body is composed of a composition, which itself contains a polyetherketoneketone or a derivative of polyetherketoneketone. The placement of the dielectric body around the conductor can be accomplished by molding the body around the conductor, for example, by molding techniques such as extrusion, injection molding, pressure molding, compression molding, and casting. An electrical connector for use in a downhole tool is also provided. The electrical connector contains a dielectric body and a conductor. The dielectric body includes a composition, which itself is composed of a polyetherketoneketone or a derivative of a polyetherketoneketone. The electrical connector of the invention is adapted for use in a downhole tool.

Abstract: Methods of manufacturing a sealing or an anti-extrusion component for use in a downhole tools is described. The method includes formation of the component from a composition that contains a polyetherketoneketone or a derivative of a polyetherketoneketone. The resultant component is adapted for use in a downhole tool. The invention is also a sealing or an anti-extrusion component for use in a downhole tool. The component contains a composition, which itself is composed of a polyetherketoneketone or a derivative of a polyetherketoneketone, and the component is adapted for use in a downhole tool.

Abstract: An anti-extrusion ring for a packer assembly comprises first and second ring portions that are divided into a plurality of discrete arcuate segments. The segments are adapted for movement between a retracted position wherein each segment is in contact with adjacent segments, and an expanded position wherein gaps are formed between the segments. At least one of the ring portions is adapted to face a resilient sealing sleeve of the packer assembly. The first ring portion is circumferentially offset from the second ring portion such that at least one of the first and second ring portions extends across the gaps during movement of the segments toward the expanded position. In this manner, extrusion of the sealing sleeve through the gaps is prevented.