Abstract: A downhole tool includes an outer tubular member and an inner tubular member. The outer tubular member may have one or more screens coupled thereto, a packer coupled thereto, and a shunt tube isolation valve coupled thereto. A first sleeve may be coupled to the packer and move from a first position to a second position. The packer may actuate into a set state when the first sleeve is moved to the second position, and the packer may isolate first and second portions of an annulus from one another when in the set state. A shunt tube may be coupled to the packer and provide a path of fluid communication from the first portion of the annulus, through the packer, and to the second portion of the annulus when the packer is in the set state.

Abstract: Methods, fluids, and compositions are provided for treating subterranean formations. The fluids can be servicing or drilling fluids including a base fluid and a particulate agent or biocide precursor particulate agent. The particulate agent can seal flow paths in the subterranean formation and subsequently can be degraded to allow flow to resume. The particulate agent may be a reaction product of a urea containing compound and an aldehyde containing compound. An example of such a reaction product is a methylene urea.

Abstract: The flow of well treatment fluids may be diverted from a high permeability zone to a low permeability zone within a fracture network within a subterranean formation by use of a mixture comprising a dissolvable diverter and a proppant. At least a portion of the high permeability zone is propped open with the proppant of the mixture and at least a portion of the high permeability zone is blocked with the diverter. A fluid is then pumped into the subterranean formation and into a lower permeability zone of the formation farther from the wellbore. The diverter in the high permeability zones may then be dissolved at in-situ reservoir conditions and hydrocarbons produced from the high permeability propped zones of the fracture network. The mixture has particular applicability in the enhancement of production or hydrocarbons from high permeability zones in a fracture network located near the wellbore.

Abstract: Methods of controlling flow into a formation through the use of a stimulation valve in a tubular assembly installed in a well. Fluid is pumped into the formation through one or more ports in the stimulation valve. The stimulation valve defines a conduit for flow of fluids through the stimulation valve. The ports are adapted to allow flow of fluids between the conduit and the exterior of the stimulation valve and to receive a ball sealer for shutting off flow of fluids through the ports. The ports then are closed by introducing a plurality of ball sealers into the fluid. The fluid carries the ball sealers into the valve where they seat on and shut off flow of the fluid through the ports.

Abstract: A cement slurry composition is described as having cement, water, and organic polymer particles. The composition also includes non-ionic surfactants, which may contain ethoxylate groups or contain both ethoxylate groups and propoxylate groups in the hydrophilic part. The non-ionic surfactant acts to disperse the hydrophobic polymeric particles in the slurry, thereby reducing mixing time. The cement slurry composition is prepared and then pumped into the subterranean well and placed in a zone of the subterranean well. Time is then allowed for the cement slurry composition to set and form a solid mass in the zone.

Abstract: A firing assembly for a wellbore perforating gun or other downhole tool includes; one or more casings connected together to form a firing head containment body, the firing head containment body is in fluid communication with a firing assembly that includes a click pressure firing module that allows the wellbore to be pressurized to high pressures required for pressure testing the well casing one or more times without firing the gun or actuating a certain downhole tool, and after a predetermined number of pressure increase events, allows the subsequent high pressure activation to reach the firing pin or actuation device and fire the gun or activate the tool without further activity from the surface other than applying the pressure.

Abstract: The invention relates to the in-situ generation of chlorine dioxide for the treatment of hydrocarbon processing systems. The composition comprises a source of chlorite, a source of persulfate and water. Under the specified conditions of temperature and/or halide catalyst, chlorine dioxide is generated at an increased rate, thereby effectively treating down-hole hydrocarbon recovery systems.

Abstract: An automatic drilling apparatus having a tool body, a motive device connected to the tool body, and a drill bit connected to the tool body. The apparatus also includes a setting tool connected to the body, at least one sensor disposed on the tool body, and a computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor.

Abstract: The present invention concerns the use of a novel additive as an agent for inhibiting the swelling of clays, in particular in the field of boreholes. More specifically, the present invention concerns the use of a specific diamine and diacid salt as an agent for inhibiting the swelling of clays in an aqueous medium, and a drilling or hydraulic fracturing fluid composition comprising the salt according to the invention and methods for drilling or hydraulic fracturing implementing said salt.

Abstract: A well treatment fluid includes an aqueous-based fluid, a crosslinked CMHEC polymer, and a crosslinker. The CMHEC polymer exhibits a DS of 0.2 to 0.6 and a MS of 2.0 to 2.5. The well treatment fluid exhibits a viscosity of at least about 100 cP. A well treatment method includes crosslinking a CMHEC polymer in an aqueous-based fluid at a pH of at least about 6. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP. A well is treated with the well treatment fluid at a temperature of at least about 200° F. Another well treatment method includes forming a well treatment fluid from produced water that has a TDS content of at least about 150,000 ppm. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP.

Abstract: A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.

Abstract: A tool string carrying an external tool, such as a liner hanger, on a release mechanism is lowered into the wellbore. Interlocking lugs and J-slot profile, defined between the exterior surface of the mandrel and interior surface of the release mechanism, allow relative movement of release mechanism and mandrel without releasing the release mechanism. The relative movement allows mechanical operation of a valve or other tool positioned below the release mechanism. Weight-down and rotation of the tool string and mandrel actuates the lower valve assembly by turning a sleeve into alignment with cooperating members of the mandrel. The sleeve, no longer constrained, moves longitudinally in response to a biasing mechanism. Movement of the sleeve allows closure of the valve. After actuation of the valve tool, further weight-down releases the release mechanism from the carried tool.

Abstract: A vertical oil storage system includes an oil tank for storing oil and water, an oil caisson coupled to the top of the oil tank, a water caisson coupled to the bottom of the oil tank, a containment saucer positioned and floating substantially at the interface between the oil and the water stored in the oil tank, a water pipe extending from an upper water sump in the center well to the water caisson, a water passageway extending from the center well to the water caisson, and an oil pipe extending front the topside facility to the oil caisson. A corresponding method to displace water with oil and to separate oil from displaced water in the vertical oil storage system includes loading oil from a topside facility into an oil caisson via an oil pipe, offloading water from water caisson into an upper water sump in a center well via a water pipe, and offloading water from the center well is a water passageway and discharging it back to open water via a water outlet at the keel of the platform.

Abstract: An apparatus for controlling the injection pressure of an aqueous polymer solution in a subsea oil wellhead, includes a linear pressure reducer in the form of a tube connected in series to the main injection line that is capable of absorbing the majority of the pressure drop and a choke that is capable of being regulated in order to enable a pressure control between 0 and 10 bar. Also, a process of offshore enhanced oil recovery by injection of an aqueous polymer solution uses the apparatus.

Abstract: A method of separating a riser, comprising providing a riser having an inner and an outer surface, a circumference of said outer surface, a longitudinal axis and a first end and a second end; radially surrounding said riser with an explosive shaped charge material, wherein said shaped charge explosive material is capable of generating a high-velocity plasma jet in response to an activation signal, and wherein said explosive material comprises an electrically conductive layer; transmitting said activation signal to said explosive material; generating said high-velocity plasma jet; and separating said riser into a first portion comprising said first end and a second portion comprising said second end when said high-velocity plasma jet penetrates said outer surface of said riser and exits said inner surface of said riser.

Abstract: The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2?CF—O—Rf (I) wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

Abstract: An actuation device comprises a housing comprising one or more ports, a magnetic valve component, and a central flowbore. The central flowbore is configured to receive a disposable member configured to emit a magnetic field, and the magnetic valve component is configured to radially shift from a first position to a second position in response to interacting with the magnetic field.

Abstract: An oil well control device automatically shuts in a well responsive to the removal of a work string (or other removable structure—ball retarding structure) from the device. The device is placed in the well as a section of the well casing. The device provides a pair of bores, one that aligns with the well bore or well casing, the other being a branch flow line containing a ball structure that will close the well if the drill pipe or drill string is removed. While conducting normal well activity (e.g. drilling, work over or the like) the ball retarder (e.g. work string) prevents entry of the ball structure into the main flow channel.

Abstract: According to one aspect of the disclosure, a hydraulic cycle opening sleeve includes a valve assembly and an opening assembly. The valve assembly includes at least one valve chamber and valve piston positioned to move in response to fluid pressure. The opening assembly includes a sliding piston to selectively open or close the hydraulic cycle opening sleeve.

Abstract: Downhole tools, such as MWD modules (or components), may be coupled together with a coupler (or coupling device) having a shall housing with slidable electrical connectors disposed at each end. The electrical connectors may each be supported in connector housings disposed with springs or other movable devices. In a first position, the electrical connectors may extend past the ends of the shaft housing. The slidable connector housings allow the electrical connections to he made before the sleeves connecting (or mechanically connecting) the MWD modules with the coupler are begun to be threadedly attached with the coupler. Each of the connector housings may have a key configuration on their exposed end. The shaft housing may also have key configurations on its ends. The key configurations of the connector housings and the shaft housing may he configured to mate with compatible ends of MWD modules.

Abstract: A tubular joint elevator includes a ringed portion configured to lift a tubular joint. The elevator includes an elevating mechanism disposed adjacent to the ringed portion, and configured to elevate the tubular joint. In some embodiments, the elevator includes first, second, and third doors. The elevator includes a first locking member, and the first door includes a first locking recess. The first locking member is axially displaceable between an advanced position and a retracted position such that it is either received in or separated from the first locking recess. The third door includes a locking pin, and the first door comprises a locking hole. The third door is longitudinally displaceable between a first position and a second position such that the locking pin is either separated from, or received in, the locking hole. Methods of using the same are also included.

Abstract: Rotating wellhead hanger assemblies are provided. In one embodiment, a wellhead hanger assembly includes a casing hanger and a casing hanger running tool coupled to the casing hanger. An exterior surface of the casing hanger includes a recess and the casing hanger running tool includes a dog that extends inward from the casing hanger running tool into the recess of the exterior surface of the casing hanger. Engagement of the dog with the recess of the casing hanger facilitates synchronous rotation of the casing hanger and its running tool. Additional systems, devices, and methods are also disclosed.

Abstract: A well tool adapted to be connected with and disconnected from a well tubing using a power tong device having a pair of tongs, a gripping span between the pair of tongs, and a maximum clearance diameter for an object passing through the tongs. The well tool includes a tubular mandrel. The tubular mandrel has a maximum mandrel diameter which is no greater than the maximum clearance diameter. The tubular mandrel includes a first mandrel connector which is adapted for connecting the tubular mandrel with a first well tubing in order to provide a first connection. The tubular mandrel is configured so that when the power tong device grips a tong gripping surface on the tubular mandrel and the first well tubing in order to connect the tubular mandrel and the first well tubing, the first connection is located within the gripping span.

Abstract: A tubing anchor for anchoring and catching well equipment in a well conduit to arrest movement in both longitudinal directions and rotation in a first direction. A mandrel connected to the equipment has in one embodiment C or reverse C-shaped grooves when viewed in front elevation for slideably receiving respective pins from a drag body on the mandrel. A slip retainer on the mandrel houses slips for selectively engaging and disengaging the conduit. An initial pull of the mandrel causes the pins to move the drag body toward the slip retainer driving the slips outward to grip the conduit. Rotation of the mandrel in the first direction sets the anchor to arrest movement. Further pulling and a reversed turn of the mandrel maintains the set position. A spring biases the slips outward to maintain their set to catch the well equipment in the event of a break in the string above the anchor.

Abstract: An annular barrier (1) for providing a barrier between a casing (3) and a borehole (5) or between a casing and a surrounding casing, comprising:—a tubular part (6) for forming part of the casing, having an axial extension,—an expandable metal sleeve (7) connected with and surrounding the tubular part and defining an expandable space (13), and—an opening (11) fluidly connected with the expandable space for letting fluid from within the tubular part to the expandable space to expand the sleeve, wherein the annular barrier further comprises a tubular metal element (20, 20A) connecting the sleeve with the tubular part, having an extension in the axial extension and a first end part (21) connected with the tubular part and a second end part (22) connected with the expandable sleeve, and wherein the first end part is arranged closer to the opening along the axial extension of the tubular part than the second end part.

Abstract: An electromagnetic chemical adhesive pipe plugging system is provided, including an elongated hollow injection quill, said quill having a plurality of circumferentially spaced magnetic jaws, a plurality of circumferentially spaced shoes, and a plurality of circumferentially spaced magnetic heads, wherein the magnetic jaws, shoes, and magnetic heads are capable of being pushed radially outward into gripping engagement with the inner diameter of a pipe assisted by chemical adhesive bonds against the pressure forces acting thereon, and the magnetic heads are capable of creating an intense magnetic field. Methods and means of deploying, positioning, maintaining, controlling, and operating the system are also provided and include insertion through the BOP primary exit line or choke and kill lines within a BOP device.

Abstract: The present invention relates to sole support pad for hoofed animals but more particularly to sole support pad for horses with laminitis or other foot problems. Said sole support pad comprises a curable resin-coating tiny expandable polystyrene balls which can be placed directly to the foot with or without shoes in a matter of seconds. It further relates to a process of producing said sole support pad comprising the steps of; coating polystyrene balls with poly-isocyanate prepolymer under dry atmosphere; allowing isocyanate and polyol to react; hardening the resin upon wetting with tertiary amine or organic peroxide solutions, and packaging coated balls in impervious package to prevent contact with atmospheric pressure.

Abstract: A fire suppressant mixture comprising: an organic or supplemental organic fire suppressant compound; a halogen element, and an organic compound, wherein the organic fire suppressant compound, the halogen element and the organic compound are combined such that a boiling point of the mixture is lower than the boiling point of the organic fire suppressant. In some embodiments, the organic fire suppressant compound is FK 5-1-12 and the organic compound is carbon dioxide. In other embodiments, the mixture is supplemented with an additional organic compound such as CF3I or 2,2-Di-chloro-1,1,1-trifluoroethane (R123), or an halogen element. In some embodiments an inorganic pressurizing gas, such as nitrogen, is also added.

Abstract: A fire safety control system includes a storage container with an agent; a valve on the storage container for releasing the agent; a control head on the valve for actuating the valve; and a connection sensor on the control head for sensing whether the control head is connected to the valve and for producing a connection status signal.

Abstract: Fire extinguisher apparatus comprising at least one vessel containing a fire extinguishing medium and adapted to release said fire extinguishing medium when a fire or potential fire is identified characterised in that said fire extinguishing medium comprises an aqueous suspension of expanded vermiculite.

Abstract: A self-centering pivot assembly for an agricultural implement having a tool bar is provided. The self-centering pivot assembly includes at least one spring, a bar segment operatively connected to one or more working tools of the agricultural implement, and a mounting assembly operatively connected between the tool bar and the bar segment. The self-centering pivot assembly further includes a pivot operatively connected to the bar segment and the at least one spring such that as the agricultural implements travels over the ground and the bar segment deviates laterally from a neutral position, the at least one spring temporarily compresses and urges the bar segment back towards the neutral position.

Abstract: A soil working tool for an agricultural machine includes a carrier that comprises a cutting region having a cutting edge, and one or more hard-material elements being arranged in the cutting region. The hard-material element is a cutting element that forms at least a part of the cutting edge.

Abstract: In a programmable torque control method for sensing locking element, at least one sensing locking element and a power torque tool are provided. A s sensed strain signal produced by the sensing locking element is transmitted to a controller of the power torque tool when the sensing locking element is driven by a power torque tool to a desired position and forward and backward rotations of a driving motor of the power torque tool are controlled by the controller, and the forward or backward rotation of the driving motor is determined according to the s sensed strain signal to control a programmable continuous motion until the tightening torque or clamping force reaches to a predetermined target torque value.

Abstract: Illustrative embodiments of impact tools are disclosed. In at least one illustrative embodiment, an impact tool may comprise an impact mechanism including a hammer and an anvil. The hammer may be configured to rotate and to move between a disengaged position in which the hammer does not impact the anvil when rotating and an engaged position in which the hammer impacts the anvil when rotating, and the anvil may be configured to rotate when impacted by the hammer. The impact tool may further comprise an electronic controller configured to cause the hammer to (i) rotate in the disengaged position until reaching a threshold rotational speed and (ii) move from the disengaged position to the engaged position in response to the hammer achieving the threshold rotational speed.

Abstract: A method is provided for setting a fastener in a workpiece. The method includes: monitoring a parameter of the power tool during operation of the power tool, where the parameter is indicative of the placement of a fastener being driven by the power tool in relation to the workpiece; detecting, a change in the parameter, where the detected change in the parameter indicates that the power tool became disengaged with the fastener; modifying operation of the power tool in response to the detected change in the parameter; subsequently detecting a second change in the parameter; and interrupting transmission of torque to the output spindle in response the detected second change in the parameter, thereby properly setting the placement of the fastener in relation to the workpiece.

Abstract: An apparatus for accessing longitudinal bores which includes: a length of resilient tube configured to be extendible along at least a portion of its length; wherein one end of the resilient tube includes a utility head thereon; and wherein the other end of the tube is configured to directly or indirectly connect to, and receive a force from, a physical energy source.

Abstract: The invention relates to a connection for releasably connecting two parts of an electro-mechanical device, the connection including: a first connecting portion associated with a first part, and a second connecting portion associated with a second part, such that engagement of the first and second connecting portions imparts bias between the two parts, and a retention means suitable for maintaining the bias between the two parts.

Abstract: To provide an electric working machine, in which a brushless motor is mounted, in order to improve energy efficiency. An electric working machine includes: a disk motor including a rotor having a permanent magnet pole, an output shaft fixed to the rotor and serving as a rotation center of the rotor and a stator configured to generate a magnetic field with respect to the rotor; and a housing configured to accommodate the rotor therein and to rotatably support the output shaft. The stator includes: a magnetic yoke facing the rotor; and a coil board provided on a surface of the yoke facing the rotor. The stator is fixed to the housing side. The coil board has an extension portion on an outer circumferential edge thereof. Electric circuit elements for a motor driving circuit are mounted on the extension portion.

Abstract: A powered hammer includes a housing having a proximal end and a distal end. The distal end includes an opening for a tool to pass through. The powered hammer further includes a shroud member coupled to the housing and configured to surround an outer surface of the distal end of the housing. The shroud member includes an opening on a lower surface thereof. The opening is configured to allow the tool to pass through. The shroud member is made from a ceramic material with a layer of fiber glass disposed adjacent to the outer surface of the distal end of the housing. The shroud member is configured to reduce heat transfer to the housing from an ambient environment proximate the distal end of the housing.

Abstract: An impact driver includes a motor, a spindle rotated by the motor, a hammer that is movable forward and rearward with respect to the spindle and that has an inner peripheral portion facing the spindle, and an anvil struck in a rotational direction by the hammer. A grease supply path is provided to supply grease to the inner peripheral portion of the hammer.

Abstract: An impact tool performs a processing operation on a workpiece by carrying out an impact operation on a tool bit in a longitudinal axis direction. The impact tool includes a motor having a rotor and a stator, a tool main body housing the motor, a drive shaft parallel to a longitudinal axis of the tool bit and rotatably driven by the motor, and an oscillating member that is supported by the drive shaft and that carries out an oscillating movement in the axial direction of the drive shaft based on the rotational motion of the drive shaft. A tool drive mechanism is coupled to the oscillating member so that the oscillating movement of the oscillating member linearly moves the tool bit in the longitudinal axis direction. The motor is an outer rotor motor in which the rotor is disposed on an radially outer side of the stator.

Abstract: A power cable (C1), or power umbilical, comprising a number of electric high power cables (10) for transfer of large amounts of electric power/energy; filler material (2, 3, 4, 5, 6) in the form of stiff elongate plastic elements; the number of electric high power cables (10) and stiff elongate plastic elements (2, 3, 4, 5, 6) being gathered in a twisted bundle by means of a laying operation; a protective sheath (1) that encompasses the electric cables and the filler material; and at least one longitudinally extending channel (6) is provided for forced flow transportation of a cooling agent through said power cable/umbilical in order to cool down the electric high power cables (10) and their insulation material from a critical temperature value of about 90° C.

Abstract: The present disclosure describes a cable designed to minimize values for resistance, inductance, and capacitance, without the trade-offs of typical designs. The cable includes a plurality of conductors for each signal or leg, which may be configured as a braid of three subsets of braids of bonded pairs of insulated conductors. The bonded pairs may be twisted or untwisted, in close proximity such that inductance is reduced via magnetic field cancellation. Each leg may be separate and parallel, rather than interwoven or braided together, increasing the distance between the two signals and reducing capacitance. The legs may be positioned close to each other, such that their magnetic fields cancel to further reduce inductance.

Abstract: A cable or cord management device comprises a sheath or enclosure that surrounds the cable or cord that facilitates organization and handling of the cable or cord. The management device can include a stiffener, such as a wire, to permit easier installation of cable or cords in the device and adjustment of the length of the cable or cords. The sheath can have an elongate opening closed by a zipper extending along one side of the sheath and another shorter elongate opening extending along the opposite side of the zipper.

Abstract: A cable termination device includes a housing further including a termination cap, a screw unit and an insertion opening for cable in order to terminate the cable end in an electrical-shock-proof manner. The termination cap interacts with the screw unit. The insertion opening is provided in the screw unit and has at least one core. At least one elongate receiving pocket is provided in the housing to receive at least one core.

Abstract: There is provided an electric wire holder for holding electric wires connected to terminal fittings at end portions of the wires, the holder configured to attach to a shielding pipe to cover an edge of the shielding pipe into which the electric wires are inserted and from which the terminal fittings and a portion of the electric wires are drawn out to an outside of the shielding pipe, the holder comprising: a first holding piece configured to hold the portion of the electric wires that is drawn out from the shielding pipe and to fix a draw-out position of the terminal fittings.

Abstract: Disclosed is a shield wire for a wiring harness improving workability for wiring, and a method of the shield wire for a wiring harness. Forming of a shield part by winding a strip-like shield member outside of an electric wire allows work for inserting the electric wire into the shield part to be omitted, which improves workability for wiring. Forming of overlap portion where the shield part overlaps with each other in a radial direction allows the electric wire not to be exposed even if the shield electric wire for a wiring harness is bent, which prevents leak or penetration of electromagnetic wave.

Abstract: An optical-electric composite cable includes an optical fiber, an inner tubular cover enclosing the optical fiber, a plurality of electric wires arranged outside the inner tubular cover, a binding member collectively bundling the plurality of electric wires, and an outer tubular cover covering an outer periphery of the binding member. A gap exists between the binding member and the outer tubular cover.

Abstract: High-voltage insulation systems are simplified and can have a thinner design by the use of an electrically conductive PTFE fabric, wherein the thermal conductivity is also improved.

Abstract: A pole part for medium voltage use, with an insulating coverage made of duroplastic or thermoplastic material, and a method for manufacturing the pole part are provided. To enhance the manufacturing of pole parts, such that the manufactured pole part could be more easily released out of the mold, and additionally that the interface between elements made of different materials are tightly closed, in order to generate reproducible dielectric withstand performance in the manufacture, the transition area between different elements of the pole part are commonly flat in such a way that rounded edges and/or steps are avoided.