Abstract: According to one embodiment of the invention, a hole misalignment compensation system includes an outer bushing having a first outside diameter approximately equal to a diameter of a first hole in a first part and a first inside diameter eccentric to the first outside diameter, and an inner bushing having a second outside diameter approximately equal to the first inside diameter and a second inside diameter eccentric to the second outside diameter. The inner bushing is adapted to be positioned such that an axis of the second inner diameter approximately aligns with an axis of a second hole in a second part.

Abstract: Two embodiments of an improved tool, which may be used as a running tool or a pulling tool for well tools. The improved structures provide running pulling tools which may be jarred upwardly on or jarred downwardly on as long as required after engaging a tool set in well pipe and may be released from the well tool when desired. When the running pulling tools are jarred downwardly, they will operate to release if either the tool mandrels or tool skirts contact with well tool. Each tool skirt is positioned in contact with external dog shoulders, providing increased impact area and eliminating costly precision machining of tool parts. Both improved tools may be manually released from a well tool on surface. One embodiment may be prepared for further use with the aid of hand tools. The other embodiment may be prepared for further use almost by hand.

Abstract: A seal assembly for use on a downhole well tool such as a wireline locking mandrel. The seal assembly includes a center element, multiple v-rings, wire mesh backup rings, and minimum clearance metal backup rings. The v-rings are manufactured from asbestos yarn impregnated with an elastomer and wrapped with tetrafluorethylene-propylene copolymer or terpolymer.

Abstract: An improved running pulling tool utilizing dogs for engaging an internal fishing neck on a well tool. The dogs are locked in fishing neck engaging position on the tool mandrel and are unlocked by jarring downwardly, upwardly and again downwardly and moved to a position on the mandrel retracting the dogs and releasing the improved tool from the fishing neck. The improved structure provides a tool which may be jarred upwardly on or jarred downwardly on as long as required and which may be released from the well tool fishing neck when desired. When the tool is jarred downwardly on, it will operate to release if either the tool skirt or mandrel contact the well tool. The skirt may be positioned to contact shoulders on the dogs and eliminate costly precision machining and provide more area to absorb jarring impact on the tool. On surface the improved tool can be manually released from a fishing neck and manually prepared for further use.