Abstract: A fibre composite rod fishing tool includes a ring base with an axis and provided with peripherally arranged, axially extending radially resilient arms with slips with a common axial bore being tapered-off towards a rod receiving aperture opposite of said ring base, said common axial bore provided with teeth of common radial cutting depth, said teeth's engaging edge having the tapering off of the common axial bore, so as for the outer set of teeth's engaging edge to be most blunt, and each consecutive set of teeth's engaging edge extending higher and being sharper inwards toward the common axis, as counted in the direction away from said rod receiving aperture.

Abstract: A coupler includes a first hollow sleeve, a plurality of tapered clamps and a second hollow sleeve. The first hollow sleeve is formed with a first inner threaded portion on the inner face of one end while the other end thereof a tapered face. The diameter of tapered face increases toward the first inner threaded portion. The outer face of each tapered clamp is formed with a second tapered face, which contacts the first tapered face. The inner face of each tapered clamp has a plurality of teeth conforming to one end portion of the first bar. One end of the second hollow sleeve is formed with a first outer threaded portion and the first outer threaded portion conforms to the first inner threaded portion. The second hollow sleeve is formed with a second inner threaded portion, which matches a second outer threaded portion of the second bar.

Abstract: An improvement in a gripping tool having a grip surface carried by movable grip elements and cam linkages to radially move the grip surface from a retracted to an extended position. The improvement involves a tri-cam linkage with cam pairs supporting bi-rotary to axial stroke activation and further cam linkages to cause radial stroke of the tool grip surface as a function of axial stroke.

Abstract: A standing valve retrieval tool for coupling to a standing valve to allow removal of the standing valve with a tap type puller or a fishing tool. The tool comprises a coupler having a first end and a second end, the first end removably connected to a standing valve within a downhole pump barrel and the second end oriented towards a movable downhole assembly also located within the downhole pump barrel above the standing valve. The coupler has a threaded opening extending within the second end for optionally receiving a tap type puller connector to remove the standing valve and a laterally projecting collar located along the second end for optionally receiving a fishing tool connector to remove the standing valve. The coupler also includes drainage openings extending through the second end for draining debris within the fluid to prevent the threaded opening from becoming plugged.

Abstract: A three-ring seal assembly is provided to seal across extrusion gaps of varying size when used during down hole fishing operations.

Abstract: A gripping tool includes a body assembly and gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement. A linkage is provided to act between the body assembly and the gripping assembly which, upon relative rotation in at least one direction, of the body relative to the grip surface results in relative axial displacement of the grip surface to activate the gripping elements. This tool was developed for use on drilling and service rigs having top drives, and supports rapid engagement and release, hoisting, pushing, and rotating.

Abstract: A gripping tool includes a body assembly and gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement. A linkage is provided to act between the body assembly and the gripping assembly which, upon relative rotation in at least one direction, of the body relative to the grip surface results in relative axial displacement of the grip surface to activate the gripping elements. This tool was developed for use on drilling and service rigs having top drives, and supports rapid engagement and release, hoisting, pushing, and rotating.

Abstract: An overshot tool includes a grapple, a torque sub rotationally fixed to the grapple and a deformable member in operable communication with the torque sub. The torque sub is responsive to torsional movement thereof. A method for retrieving a fish with the tool is also included.

Abstract: Overshot fishing tools for retrieving objects, i.e., “fish” lodged within a wellbore are disclosed. The overshot fishing tool comprises a housing having a housing bore with at least one recess disposed along the inner wall surface of the housing bore. A slip is disposed within each of the recesses. Each slip has a gripping profile for engaging and securing the fish. Each slip also has a length and a width such that the slip, when actuated, provides circumferential loading on the housing. In specific embodiments, each slip includes two or more different gripping profiles to facilitate retrieval of different types and sizes of fish.

Abstract: An apparatus and method for removing an object from a drain for includes a pair of arms each having a first end, a second end, a medial portion, a first side and a second side. Each of the first sides is convexly curved. A pivot member extends between and is pivotally attached to the medial portions so that the first sides facing each other. A slide member engages each of the first sides and urges the first ends toward each other as the slide member moves toward the pivot member. An actuator is configured to selectively move the slide member toward or away from the pivot member. A connector is attached to the actuator and is configured to releasably couple the actuator to a drain snake. Rotation of the drain snake actuates the actuator to grip the object when the first ends are adjacent to the object.

Abstract: A U-shaped elevator having no doors is provided with first and second latching mechanisms which when contacted by the tubular to be entrapped within the elevator move from a closed position to an open position and which then return to a closed position as soon as the tubular is entrapped within the elevator. The latching mechanisms have a safety catch which prevents the tubular from being inadvertently removed from the elevator. The safety latch mechanism can only be activated by a handle which is manipulated by hand by personnel working on the derrick utilizing the elevator. The elevator has an open throat to receive tubulars that have couplers or other features with a lower flange surface for lifting a pipe string. The throat access has blocking members that are movable to allow tubulars to move out of the gap unless the blocking members are locked to prevent such movement. The blocking members have latches biased toward a position to immobilize the members.

Abstract: An elevator apparatus for manipulating well bore tubing includes a circular body having a top and a central cavity around a body axis. The cavity has a diameter allowing the collar portion of the tubing to pass longitudinally therethrough. A plurality of cavity restricting members above the body, supported on and spaced apart around the top of the body, have proximal and distal portions in respect to the cavity. One or more actuators are operatively associated with the petal plates for moving the proximal portion of each cavity restricting member into the cavity an extent sufficient, in combination with the other cavity restricting members so moved, to prevent passage of the collar portion of the tubing through the cavity, thereby to hold the tubing with the elevator.

Abstract: There is referred to a process for retrieving equipment (70, 72, 90) which is stuck, from a bore hole, where the equipment is connected to a tool and is brought to the surface, and the method is characterised in that a tool is lowered in the bore hole, such as mounted to the lower end of a string or the like, said tool comprising a stationary grip part (14, 44) which is arranged substantially enclosingly about the equipment residue (70, 72, 90) between its outer wall and the wall of the bore hole, after which a central axially movable grip part (16) of the tool is caused to be forced downwards for fixing the equipment residue against the stationary grip part. There is also disclosed a device for accomplishing the method.