An apparatus for applying a magnetic pressure to a work piece includes an inductor configured to be disposed in proximity to the work piece and a controller electrically connected to the inductor. The controller is configured to control a supply of electrical power in order to output a first voltage over a selected frequency range to determine a first frequency that provides a maximum current to the inductor or a second frequency that provides a current within a selected range of the maximum current to the inductor.

A jarring tool includes a main body having a central bore extending therein, an upper connection at a proximal end of the main body for attaching the jarring tool to wireline or slickline, a lower portion at a distal end of main body, and a reciprocating hammer fixed at a first position within the central bore of the main body. The jarring tool further includes a central aperture extending along a length of the reciprocating hammer, an electrical connector extending from the upper connection and through the central aperture of the reciprocating hammer to at least the lower portion of the main body, and a release mechanism on the main body for releasing the reciprocating hammer from the first position and allowing reciprocating movement of the reciprocating hammer along the central bore. The electrical connector is configured to break when the reciprocating hammer is released from the first position.

A jarring tool includes a main body having a central bore extending therein, an upper connection at a proximal end of the main body for attaching the jarring tool to wireline or slickline, a lower portion at a distal end of main body, and a reciprocating hammer fixed at a first position within the central bore of the main body. The jarring tool further includes a central aperture extending along a length of the reciprocating hammer, an electrical connector extending from the upper connection and through the central aperture of the reciprocating hammer to at least the lower portion of the main body, and a release mechanism on the main body for releasing the reciprocating hammer from the first position and allowing reciprocating movement of the reciprocating hammer along the central bore. The electrical connector is configured to break when the reciprocating hammer is released from the first position.

A method for installing a tool in a downhole system including running the tool to a target location within a tubular structure, creating a magnetic pulse, and urging the tool toward the tubular structure at a minimum velocity of 200 meters per second with the magnetic pulse. A method for actuating a downhole tool including creating a magnetic pulse, coupling the magnetic pulse to a workpiece and moving the workpiece with the pulse, the workpiece achieving a minimum velocity of 200 meters per second.

A method for installing a tool in a downhole system including running the tool to a target location within a tubular structure, creating a magnetic pulse, and urging the tool toward the tubular structure at a minimum velocity of 200 meters per second with the magnetic pulse. A method for actuating a downhole tool including creating a magnetic pulse, coupling the magnetic pulse to a workpiece and moving the workpiece with the pulse, the workpiece achieving a minimum velocity of 200 meters per second.

A downhole stroking tool (1) comprising a housing (2), a first chamber (3), a first tool part (4) comprising a pump unit (5) providing pressurized fluid to the chamber, a shaft (6) penetrating the chamber, and a first piston (7) dividing the first chamber into a first chamber section (8, 8a) and a second chamber section (9, 9b). The piston is connected to or forms part of the housing which forms part of a second tool part (10) and is slidable in relation to the shaft so that the housing moves in relation to the shaft, the shaft being stationary in relation to the pump unit during pressurization of the first or the second chamber section, thereby generating a pressure on the piston, wherein the shaft is fixedly connected with the first tool part, and wherein the housing is slidable in relation to the first tool part and overlaps the first tool part.

A downhole stroking tool (1) comprising a housing (2), a first chamber (3), a first tool part (4) comprising a pump unit (5) providing pressurized fluid to the chamber, a shaft (6) penetrating the chamber, and a first piston (7) dividing the first chamber into a first chamber section (8, 8a) and a second chamber section (9, 9b). The piston is connected to or forms part of the housing which forms part of a second tool part (10) and is slidable in relation to the shaft so that the housing moves in relation to the shaft, the shaft being stationary in relation to the pump unit during pressurization of the first or the second chamber section, thereby generating a pressure on the piston, wherein the shaft is fixedly connected with the first tool part, and wherein the housing is slidable in relation to the first tool part and overlaps the first tool part.

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft.

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft.

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft.