Abstract: A welding tool consisting of a tubular body having a lateral end and a pin end. The pin end has external threads disposed around an external circumferential surface of the pin end. The lateral end comprises an inner wall defining an orifice. Additionally, a heat proof shell is disposed circumferentially around the lateral end. The welding tool further includes a battery housing. The battery housing encloses a plurality of batteries which store energy. The welding tool further includes a welding element disposed on an inner surface of the orifice and an electric line. The electric line is coiled within the tubular body and physically contacts the welding element and is electrically connected to the plurality of batteries. The welding tool further includes a controller. The controller is capable of receiving and parsing mud pulse signals and controlling the release of stored energy from the batteries to the electric line.

Abstract: A mandrel assembly secures to a mandrel and drill pipe to start the drill pipe through the RCD. The mandrel assembly attaches to different drill pipe configurations via an attachment finger. The attachment finger secures the mandrel to the drill pipe. The attachment finger inserts into the attachment aperture of the mandrel and the drill pipe to secure the mandrel with the drill pipe. Once attached, the user removes the mandrel by pulling the mandrel away from the drill pipe via removal apertures.

Abstract: An oil or gas well fishing tool (60). The downhole fishing tool (60) has a receptacle (61) that is open at one end. The tool also has deployment tool engaging means (62), located on the opposite end of the receptacle (61) to the one end. The tool further has a layer of an alloy (64) provided on the interior surface of the receptacle (61). The alloy is a eutectic alloy and/or a bismuth alloy. The tool further comprises heating means (65) to heat the alloy (64) so that it melts and can flow over any object received within the receptacle (61).

Abstract: A handling tool includes a body having a high-stress location, a pocket formed in the high stress location, and a sensor adhered to a surface of the pocket and oriented along an axis of the body. The sensor is configured to measure at least one of stress, strain, load, and fatigue applied to the high-stress location and is at least partially covered by a protective coating having a surface profile that matches a surface profile of the high-stress location. The sensor comprises a transmitter/receiver unit configured to communicate measurement data with a feedback unit via wired or wireless communication.

Abstract: A tool for delivery of a testing element to a limited access location within a nuclear containment includes a rotation apparatus having a connection element that is configured to have an aperture that is formed generally centrally therein. A submersible machine is structured to carry the tool to a limited access location within a nuclear containment. The submersible machine includes a mount apparatus configured to be movably clamped onto a steam dam of a nuclear reactor apparatus and to drive the submersible machine circumferentially along the steam dam to inspect a plurality of jet pumps or other limited access locations of the nuclear reactor apparatus. The improved submersible machine advantageously further includes an adjustment table between the mount apparatus and a frame that carries the tool to enable rapid accurate positioning of the frame, and thus the tool, once the submersible machine has been mounted to the steam dam.

Abstract: A guide has an open end and a finger structure preferably of a shape memory alloy. The guide is run in small-diameter configuration through a restriction with a fishing tool, such as an overshot, above it. Once through the restriction, power to heaters on the fingers takes the material past its transition temperature to allow the guide lower end to fan out and surround a skewed fish that is in a slanted position and leaning on a wall of a surrounding tubular that has a larger dimension than the restriction. The bottomhole assembly is then advanced until the fish is captured by the fishing tool and pulled out of the hole. The fingers are forcibly retracted as the assembly is pulled back through the restriction. The guide can use retained fingers with an outward bias to flare out after passing through a restriction, thus acting as a fish guide.

Abstract: A grapple device is secured to a mill to allow relative rotation between them. The grapple has an outward bias to allow it to grip the packer bore or an extension from the packer. The mandrel has a wedge adjacent its lower end and torque fingers that fit between grapple segments when relative longitudinal movement occurs between the mandrel and the grapple assembly. The grapple assembly has a left hand thread so that it comes out of the packer if the mandrel engages the grapple assembly in a manner for tandem rotation. The torque fingers on the wedge on the mandrel support the grapple fingers over their length as rotation to the right removes the grapple assembly from the packer bore. Reverse circulation takes away the cuttings into the mill bore where they are separated from the reverse circulating fluid.

Abstract: A pipe retriever for retrieving an unsecured pipe has a head connectable to a drilling pipe and defines a longitudinal axis. The longitudinal axis of the head is arranged substantially parallel to a longitudinal axis of the drilling pipe when connected. A tail extends from the head at an angle with respect to the longitudinal axis. The tail defines a hook shape having inward and outward surfaces. The inward hook surface defines a pipe recess sized to receive the unsecured pipe.

Abstract: A retrieval tool and method for retrieving a remote tool with a threaded connection from a remote location. The retrieval tool includes a rotational drive member which rotates an attachment sub having a complimentary threaded portion. An articulated shaft assembly permits the attachment sub to move laterally and angularly with respect to the axis of the rotational drive member. A fluid conduit supplies fluid pressure for releasing the remote tool.

Abstract: A selectably operable passive gripping device for gripping tubular materials has an elastomeric element which is provided with integrally bonded segmented end rings to prevent the extrusion of the elastomer when it is subjected to high compressive loads. The elastomeric element is molded so that its as-molded gripping surface interferes with the surface of tubular objects to be gripped. The elastomeric gripping element is mounted and supported by a structural element or housing and allows axial flow communication through the gripped tubular objects. The gripping device is used to lift tubular objects such as a tubular string used in oil field applications.

Abstract: A mechanism to enhance disengagement of release assembly portions from one another when disposed in a well. The mechanism may be disposed at an internal rod of the release assembly and configured to prevent frictional resistance to shifting of the rod. Thus, actuation of release may be assured, for example, in spite of any axial pull on the assembly which may tend to direct radial forces on the rod. As such, controlled separation of release assembly portions may be assured so as to aid in removal of a line coupled to the assembly from the well.

Abstract: Present embodiments are directed to a gripping device configured to cooperate with a pipe drive system or top drive to provide a sealed engagement with drillpipe elements. The gripping device includes a housing configured to extend over and at least partially around a distal end of the drillpipe element. Further, the gripping device includes a seal area positioned along an inner perimeter of the housing such that, when a seal is inserted in the seal area, the seal is arranged to engage with a face of the distal end of the drillpipe element and a face of the gripping device. Further, the gripping device includes engagement features configured to extend inwardly from the inner perimeter to facilitate coupling of the gripping device with an outer circumferential area of the drillpipe element.

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 head assembly includes a spear head assembly and a latching system which are coupled together. The spearhead assembly includes a spear point having a proximal end pivotally coupled about a pivot axis and a sleeve that is biased in a direction toward a pointed end of the spear point. The sleeve is coupled with the spear point so that the spear point and the pivot axis can move axially relative to the sleeve. The latching system includes a latch body and two latch dogs which are coupled to the latch body and movable between a latching position where the latch dogs extend from the latch body and can engage a latching mechanism, and a release position where the latch dogs retract inwardly. The latching system is configured to enable the latch dogs to move parallel to each other rather than pivot when moving between the latch and release positions. The spear head assembly enables the head assembly to be coupled to an overshot to enable tripping through a drill string.

Abstract: A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector.

Abstract: A mill is configured to have large debris passages disposed among a series of radially extending blades. The mill center is adapted to accept a retention nut that supports a tool that secures the downhole tool being milled out, such as a packer. Reverse flow takes cuttings into the large open area between the blades to pass up in an annular space around a support for the retention nut. The passage then opens up to a maximum dimension leaving only the tubular wall needed for structural strength to support the mill and conduct cuttings into a debris removal tool.

Abstract: A grapple device is secured to a mill to allow relative rotation between them. The grapple has an outward bias to allow it to grip the packer bore or an extension from the packer. The mandrel has a wedge adjacent its lower end and torque fingers that fit between grapple segments when relative longitudinal movement occurs between the mandrel and the grapple assembly. The grapple assembly has a left hand thread so that it comes out of the packer if the mandrel engages the grapple assembly in a manner for tandem rotation. The torque fingers on the wedge on the mandrel support the grapple fingers over their length as rotation to the right removes the grapple assembly from the packer bore. Reverse circulation takes away the cuttings into the mill bore where they are separated from the reverse circulating fluid.

Abstract: A release device includes a first sub, a second sub, and a connector separably connecting the first and the second sub, wherein the connector includes a shear member disposed with the first sub and a collar connected between the second sub and the shear member.

Abstract: This invention comprises a system for measurement of temperature and pressure in oil wells. It comprises a single hybrid mandrel housing a double pressure and temperature optical sensor, capable of measuring temperature and pressure both in the ring and in the production tubing of an oil well and an insertable venturi tube inserted in the direction of a pressure differential optical sensor, capable of taking flow rate measurements, the installation aspects of which are substantially simplified. With the proposed construction, it is possible for one single hybrid mandrel (30) to read the pressure and temperature in the ring and tubing and the flow rate. With this, changes of flow rate are also possible, without the need to stop production for long periods for the hybrid mandrel (30) to be replaced, the mere replacement of the insertable venturi (12) sufficing, by means of an insertion and extraction GS tool (17), which is an operation requiring a much shorter time.

Abstract: A tubular gripping system and a top drive drilling system with such a tubular gripping system, in at least some aspects, the gripping system beneath the top drive unit and, in at least some aspects, the gripping system having a body with four spaced-apart grippers movably connected thereto and piston/cylinder devices movably interconnected with each gripper for moving the grippers to clamp the tubular.

Abstract: The present invention is an improved swivel joint for use as part of a cable-guided fishing assembly. The swivel joint contains a bearing assembly comprising a series of ball bearings partially encased by an inner and outer race. During a cable-guided fishing operation, the inner and outer race exert a shearing, rather than compression, force on the ball bearing due to the unique configuration of the bearing assembly. This unique configuration increases the strength of the bearing assembly, and the corresponding strength of the swivel joint, without necessitating an increase in the outer diameter of the swivel joint.

Abstract: A jointed spearhead assembly can include a base portion that is adapted to be connected to a down-hole object and a spearhead portion having a first end and a second. The second end includes a follower tab with a non-convex first follower interface. The spearhead portion can be pivotally coupled to the base portion.

Abstract: Embodiments of the present invention generally relate to signal operated tools for milling, drilling, and/or fishing operations. In one embodiment, a mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked position to the unlocked position in response to receiving the instruction signal.

Abstract: A spearhead assembly (10) comprises a base (12) having an outer surface (14), a slot (16), a spear point (18) and a guard (20). The slot (16) is formed in the base (12) and has an opening (22) that opens onto the outer surface (14). A proximal end of the spear point (18) is located in the slot (16) and pivotally coupled about a pivot axis (26) to the base (12). The spear point (18) can pivot about axis (26) between two positions that are angularly spaced by 180°. The guard (20) is coupled to the proximal end of the spear point (18) and configured to at least partially occupy the opening (22) when the spear point is in a location at or between the two spaced apart positions. The guard (20) acts to minimise the risk of an operator's hand or glove worn by the operator from being pinched or caught in the slot (16) between the spear point (13) and base (12) as the spear point (18) is pivoted between the two positions.

Abstract: An apparatus for gripping a down hole tubular includes a body element defining a central cavity along a longitudinal axis. Disposed within the body element is at least one engaging member. In one aspect, the engaging member has an upper gripping element and a lower gripping element. The gripping elements are designed to be movable with respect to one another. A rod is pivotally attached to the engaging member. The rod moves the engaging member radially inward or outward with respect to the longitudinal axis of the central cavity. In one embodiment, a slewing device is coupled to one end of the body element. The slewing device is moveable with respect to the body element along the longitudinal axis. The rod includes a first end and a second end. The first end is slidably and rotatably connected to the stewing device, such that the first end is radially moveable relative to the longitudinal axis as the stewing device is moved along the longitudinal axis from a first position to a second position.

Abstract: An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by hydraulically expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish and the latch mechanism together, as the tool is lowered, until the latch mechanism latches onto the fish.

Abstract: A well pipe extraction apparatus for removing a groundwater monitoring well consisting of PVC pipe from the ground. The well pipe extraction apparatus includes a wire rope, a soft eye formed at an upper end of the wire rope and knurled brass rod attached to the opposite end of the wire rope. The knurled brass rod is lowered to the bottom end of the well casing. An operator pours sand particles down the well casing. The sand particles wedge in-between groves within the brass rod and the interior surface of the well casing locking brass rod to the well casing which allows the operator to extract the PVC pipe from the ground.

Abstract: A well pipe extraction apparatus for removing a groundwater monitoring well consisting of PVC pipe from the ground. The well pipe extraction apparatus includes a wire rope, a soft eye formed at an upper end of the wire rope and knurled brass rod attached to the opposite end of the wire rope. The knurled brass rod is lowered to the bottom end of the well casing. An operator pours sand particles down the well casing. The sand particles wedge in-between groves within the brass rod and the interior surface of the well casing locking brass rod to the well casing which allows the operator to extract the PVC pipe from the ground.