Abstract: An assembly including a flexible sinker bar (24) including an electrically conductive wire (30) for use in the well drilling industry, particularly oil wells, and more particularly for use in assisting introduction into the wellbore, through the drill pipe or tubing, various types of logging tools and other completion assemblies securable to a tool connector (T), such as chemical cutters, string shots, free point indicators, jet cutters, metal severing tools, split shot cutters, radial cutting torches, pipe recovery logs, temperature logs, noise logs, and perforating guns. Conductive wire 30 is used to send electric power to operate or trigger the various logging tools.

Abstract: A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line 62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools 64 from a well head.

Abstract: An assembly including a flexible sinker bar (24) including an electrically conductive wire (30) for use in the well drilling industry, particularly oil wells, and more particularly for use in assisting introduction into the wellbore, through the drill pipe or tubing, various types of logging tools and other completion assemblies securable to a tool connector (T), such as chemical cutters, string shots, free point indicators, jet cutters, metal severing tools, split shot cutters, radial cutting torches, pipe recovery logs, temperature logs, noise logs, and perforating guns. Conductive wire 30 is used to send electric power to operate or trigger the various logging tools.

Abstract: A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line 62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools 64 from a well head.

Abstract: A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line 62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools 64 from a well head.

Abstract: Apparatus for recovering logging tools and the like from a wellbore as part of a drilling operation such as for oil wells, irrigation systems and the like. The apparatus includes the use of a flexible connector member in the form of a flexible wire rope, or strand, or cable, or a series of short, bar-like members having lengths of about a couple of inches, or longer, which may be connected together by, for example, hinge pins, or U-joint connectors, or heavy chain-like links, or short lengths of wire-rope. The flexible connector members are provided with socket members attached with resin or by being swaged or crimped to the flexible member. The apparatus takes the place of the conventional rigid sinker bar assembly that typically may be approximately 20 feet in length and causes safety concerns when used with a top drive housing.

Abstract: A heavy duty clamp for cables or wires, and the like, said clamp having increased strength and resistance to distortion or breakage. Two overlying clamp plates, or segments, are held against relative movement by one of the plates having a shoulder member that engages with a portion of the other plate. The plates contain a split, tubular gripping member and the plates have increased longitudinal strength by having extended ends of the plates to provide protection against shearing forces created by the split tubular gripping member against the adjacent ends of the clamp plates.

Abstract: A retrievable float valve hanger tool assembly provides a hanger sub having a first upper connection for attaching the hanger sub, for example, threadably, to a drill string or work string. A second lower connection means on the sub provides both external and internal threaded (for example) connections, which allow the sub to be connected on its inner threads to a float valve canister and at its external threads to an extension which forms a protective housing about the float valve and its valve canister during operation. The device places the float valve below the joint of the sub and the extension so that an explosive charge can be detonated at the joint allowing easy removal of the float valve from the drill string in the event that the drill pipe becomes stuck. A continuous bore through the assembly allows fluid circulation through the tool in the work string and also allows the explosive charge to be lowered by wireline, for example, to the tool assembly at the appropriate joint.

Abstract: A retrievable float valve hanger tool assembly provides a hanger sub having a first upper connection for attaching the hanger sub, for example, threadably, to a drill string or work string. A second lower connection means on the sub provides both external and internal threaded (for example) connections, which allow the sub to be connected on its inner threads to a float valve canister and at its external threads to an extension which forms a protective housing about the float valve and its valve canister during operation. The device places the float valve below the joint of the sub and the extension so that an explosive charge can be detonated at the joint allowing easy removal of the float valve from the drill string in the event that the drill pipe becomes stuck. A continuous bore through the assembly allows fluid circulation through the tool in the work string and also allows the explosive charge to be lowered by wireline, for example, to the tool assembly at the appropriate joint.