Abstract: A method of servicing a wellbore in contact with a subterranean formation comprising placing an aqueous composition comprising a mud displacement fluid and a clay inhibitor into the wellbore. An aqueous composition for servicing a wellbore comprising a mud displacement fluid and a clay inhibitor. A method of servicing a wellbore comprising introducing an aqueous wellbore servicing fluid comprising a clay inhibitor, thereby inhibiting the swelling of an argillaceous subterranean formation penetrated by the wellbore.

Abstract: Apparatus and methods are provided for a cementing operation for use with a drilling with casing application. In one embodiment, an apparatus is provided for stage cementing using a full opening stage tool. In another embodiment, an apparatus is provided for reverse cementing of the casing.

Abstract: A system and method for perforating and fracturing at least one of a casing or a sleeve proximate to the casing in a wellbore are perforated to form one or more apertures therein. The apertures are operable to allow passage of fluids between an interior of the casing and earth surrounding the wellbore. The earth surrounding the wellbore can be fractured through the apertures. The sleeve can be moved to selectively close one or more of the apertures and substantially seal against passage of fluids therethrough.

Abstract: In a system and method of fracturing a subterranean formation, fluid for perforating is received in a downhole tool through a tubing string, the downhole tool residing in a wellbore. A wall of the wellbore is perforated proximate the downhole tool. A fluid for fracturing is received in the downhole tool through the tubing string. The subterranean formation proximate the downhole tool is fractured. The operations of receiving a fluid for perforating, perforating, receiving a fluid for fracturing, and fracturing are performed while keeping at least a portion of the downhole tool in the wellbore.

Abstract: Corrosive effects arising during oilfield treatment applications are inhibited and/or prevented by introducing into an oil or gas well at least one compound of formula I: wherein: R1 is independently H, —[—CnH2nO—]a—H, or an alkyl group having from 1 to about 24 carbon atoms; R2 is independently H or —[—CnH2nO—]b—H, R3 is independently —[—CH2]c—, or —CdH2d—[—OCnH2n—]e—, R4 is independently H or —[—CnH2nO—]f—H, R5 is independently H or —[—CnH2nO—]g—H, a is from about 1 to about 8; b+f+g is between 0 to about 30; c is from about 1 to 6; d is from about 1 to 6; e is from about 1 to about 8; and n is 2 or 3. Such corrosive effects are especially inhibited in the treatment of sour wells where H2S corrosion is a potential problem as well as conduits used during the treatment of subterranean formations.

Abstract: Some embodiments of the present invention provide methods of stabilizing a portion of a subterranean formation or reducing the production of particulates from a portion of a subterranean formation comprising contacting the portion of the subterranean formation with a pre-flush fluid; contacting the portion of the subterranean formation with a consolidation fluid comprising a resin and an aqueous dissolvable solvent; and, contacting the portion of the subterranean formation with an after-flush fluid.

Abstract: A wellbore cleaning tool system includes a plurality of brushes and scrappers supported by or mounted to a casing body to clean an interior wall of a wellbore. The cleaning tool system includes selectively actuated high-velocity jet sprays to aid the cleaning of the interior wall of a wellbore by enhance the loosening and releasing of mud cake, oily residue, cement sheath, and pipe scale. The jet sprays also aid in the cleaning operation performed by and efficiency of the brushes and scrappers by spraying, loosening and releasing matter (mud cake, oily residue, cement sheath, and pipe scale) adhering to or sticking on the brushes and scrapers.

Abstract: A method for preparing to move a floating structure away from a wellbore drilled below the bottom of a body of water includes filling a riser extending from the bottom of the body of water to the floating structure with water. The water in the riser is displaced to a selected first depth below the water surface. The riser is sealed at a second selected depth shallower than the first selected depth. The portion of the riser above the second selected depth is withdrawn onto the floating structure.

Abstract: An apparatus is disclosed for handling a tubular segment, coupling the tubular segment with a tubular string, and handling the tubular string in a well bore. The apparatus has a tubular engagement assembly, which connects to a drive shaft of a top drive. The tubular engagement assembly has a self-engaging ball and taper assembly that releasably engages the tubular segment. When the tubular engagement assembly connects to the drive shaft and the ball and taper assembly engages the tubular segment, any rotation in the drive shaft results in rotation of the tubular segment. This rotation allows the tubular segment to engage the tubular string.

Abstract: An apparatus and method for facilitating the connection of tubulars using a top drive and is, more particularly but not exclusively, intended for facilitating the connection of a section or stand of casing to a string of casing.

Abstract: A releasable connector (10) for joining tubular members in a well bore. The connector (10) is a mating screwthread (38, 58) which is terminated on each member by abutting projections (24, 64), operating as a ratchet. This ensures torque is transmitted between the members in a uni-directionaly manner so that make-up torque is never applied to the screwheads when torque is applied to the members. A running tool (12) and a method of setting a liner in a well bore is also described which incorporate the connector (10) so that the liner may be part of a drill string and is left cemented in place in the well, after drilling is complete.

Abstract: A method and apparatus for removing tubulars from a wellbore is disclosed. A lifting member grips the tubular and applies a lifting force. The lifting force is then transferred to a first surface. The lifting member is monitored and when the capacity of the first surface is reached a force transfer assembly is activated. The force transfer assembly transfers the lifting load between the first surface and a second surface. The lifting member and force transfer assembly are then adjusted to maximize the amount of lifting force applied to the tubular.

Abstract: An apparatus that is usable with a well includes an power converter and a controller. The power converter translates electrical power into hydraulic power downhole in the well to generate a first hydraulic signal to cause a downhole tool to transition to a first state and a second hydraulic signal to cause the tool to transition to a different second state. The controller responds to stimuli that are communicated from the surface of the well to cause the actuator to generate one of the first and second hydraulic signals.

Abstract: A system allows for sequential treatment of sections of a zone. Access to each portion can be with a sliding sleeve that has a specific internal profile. Pump down plugs can be used that have a specific profile that will make a plug latch to a specific sleeve. Pressure on the plug when latched allows a sequential opening of sleeves while zones already affected that are below are isolated. The pump down plugs have a passage that is initially obstructed by a material that eventually disappears under anticipated well conditions. As a result, when all portions of a zone are handled a flow path is reestablished through the various latched plugs. The plugs can also be blown clear of a sliding sleeve after operating it and can feature a key that subsequently prevents rotation of the plug on its axis in the event is later needs milling out.

Abstract: A sealing system for sealing a tubular conduit is described. The sealing system includes a housing, with at least one annular seal surrounding the outer surface of the housing. The sealing system further includes at least one seal back-up mounted on the housing outer surface, adjacent the at least one annular seal. The at least one seal back-up has an anchor surface for engaging with the tubular conduit. Seal and anchor energising means are also provided for urging the annular seal and the anchor surface into contact with the tubular conduit in response to an actuation force. Once energised, a first portion of the annular seal forms a contact seal with the tubular conduit and a second portion of the annular seal presses the anchor surface to maintain contact between the anchor surface and the tubular conduit.

Abstract: A composite multi-layer horseshoe. The horseshoe has a shoe for wear and shock attenuation. A pad on the shoe bears against the hoof. It also attenuates the shock of impact on the ground. The shoe and pad are made from different polymers with different attenuation properties.

Abstract: The combination of a coulter mounting and a coulter, the coulter mounting including an S-tyne spring, one end of which is securable to the coulter and the other end of which is securable to a support such that the angle between said other end of the spring and the horizontal is 36°±7°; and the coulter including a coulter tip having a width not greater than 12 millimetres.

Abstract: A single-piece tractor weight (M) comprising an upper surface (1), a base (2), two surface oriented transversely relative to the advancing direction of the tractor and two side surfaces having a transverse eye bolt or pin (7, 8) constituting an engagement element for lifting the tractor; the weight (M) includes at least one housing (L1, L2) emerging on the outside and oriented so as to receive at least one lifting branch (B1, B2) of a load handling device and to enable the weight to be lifted and handled through co-operation between the housing and the lifting branch.

Abstract: A cutting implement comprises a substrate having a cutting edge, and plurality of hardfacing beads deposited on the substrate transverse to the edge of said substrate.

Abstract: In a torque-limiting device, a first end engages a fastener, a second end receives an applied torque, and a magnetic torque limiter transmits the applied torque from the second end to the first end to rotate the first end in conjunction with the second end when the applied torque is less than a predetermined limit.

Abstract: A water hammer using a drive rod is provided.

Abstract: A battering ram usage training device includes a support frame and a ram impact-receiving device mounted thereon having at least one piston rod support collar and a main piston rod slidably mounted in the support collar. A striking plate is mounted on the forward end of the main piston rod and at least one biasing spring biases the main piston rod forwards. A piston rod stop is mounted on the support frame to restrict rearward motion of the main piston rod. Finally, the ram impact-receiving device is operative to receive an impact from a battering ram on the striking plate and be slidably moved rearwards via the impact, the biasing springs biasing the main piston rod to slow, stop and reverse its rearward motion and return the main piston rod generally to its pre-impact position whereby the ram impact-receiving device is again ready to receive an impact.

Abstract: A hand-held power tool includes a chuck (3) for receiving an axially displaceable, within limits, percussion working tool (2) and mounted on the tool work spindle (4) having a coaxial die (5) located in its interior for imparting blows to the percussion working tool (2), and at least one cooling air channel (7) extending in the outer housing (6) radially outwardly of the work spindle and opening into a free space (8) of the chuck (3) which adjoins the work spindle (4), communicates with the interior of the work spindle through an opening (10, 10?) formed in the work spindle, and flowtight sealed from outside by a seal.

Abstract: There is disclosed a wall plate for a wiring device. The wall plate has a single opening for receiving one or a gang of two or more wiring devices within the single opening. The wall plate has along its vertical axis, a surface of positive first differential and zero second differential, comprised of a combination of splines drawn between points of varying distance from a datum plane. The surface has zero second differential when the rate of height increase of individual splines is constant. The wall plate, when composed of non-conducting material, has a conductive coating on its front surface, on its back surface or on both its front and back surfaces. When the wiring device is a switch, the surface of the switch face follows that of the wall plate. When the wiring device is a receptacle, the surface along the receptacle face is flat in one plane to allow for the proper seating of an inserted plug.

Abstract: A sheet metal housing is disclosed for housing measurement and control devices. The sheet metal housing comprises a cover plate, a baseplate, two lateral walls and a back wall, to accommodate rail-mounted, plug-in modules, the front panels of which are embodied to together form a closed front. The housing can be made up of two identical, essentially C-shaped housing shells and the back wall. The cover plate and the baseplate are both of double-wall construction and can form an inner and an outer plate, separated from each other, whereby the inner plates comprise means for accommodating guide rails. Each inner plate and each outer plate of opposing walls can be components of the same housing shell.

Abstract: A wire management system is provided to neatly and efficiently assembly the many wires of an electronic component system such as a personal computer without tangling and intertwining. The system utilizes a container having axially aligned upright posts with hooks at their upper ends to keep wires wound around the posts in the wound position. A preferred embodiment utilizes axially aligned slots and movable and lockable posts in the slots to change the wiring configuration depending on the wire to be taken up. Clips may also be utilized to secure the wire in the container. Female and male mating flanges allow the user to connect one or more containers increasing the capacity of the wire management system. Another system uses pairs of posts with a space therebetween so that the wire can be wound around the outside of the posts or threaded through the space and also around the posts.

Abstract: A ceiling fitting or cover for covering a connection of an electrical cord to a ceiling surface includes a hollow body having upper and lower circumferential edges. The body has an over-all configuration tapering from the upper to the lower edge, with an inner surface facing an inner space defined within the body. The lower edge defines an aperture into the inner space. A plurality of elastically bendable elongated members, each having a length exceeding the width of the aperture and each having a proximal end and a distal end, is disposed in the body. The proximal ends of the elongated members are located at the inner surface of the body above the aperture, and the elongated members are orientated pointing to the aperture, the distal ends of the elongated members defining a free opening therebetween having a width less than the aperture width.

Abstract: The present invention provides a splice closure for covering an elongate cable splice including a splice cover sheet having opposed longitudinal ends. The sheet is wrapped about the cable splice with the ends being overlapped. A sealant strip is positioned to overlie the cable splice and the one end of the cover sheet.

Abstract: An electrical wire and a method of making an electrical wire are disclosed. The electrical wire comprises a conductor and a covering. The covering comprises a thermoplastic composition comprising a poly(arylene ether), a polyolefin and a polymeric compatibilizer. The thermoplastic composition may further comprise a flame retardant.

Abstract: A flame retardant thermoplastic composition comprising a poly(arylene ether), a block copolymer, a liquid polyolefin, and a flame retardant additive composition. The flame retardant additive composition comprises a metal hydroxide, an organic phosphate, and a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, melem polyphosphate, melam polyphosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide, and combinations of two or more of the foregoing. The block copolymer comprises a block that is a controlled distribution copolymer having terminal regions that are rich in alkylene units and a center region that is rich in aryl alkylene units. The flame retardant composition may be used in the production of covered conductors.

Abstract: A halogen-free, flame-resistant wrapping foil, characterized in that the wrapping foil is composed of polyolefin and contains more than 120 phr of metal hydroxide, preferably aluminum hydroxide and more preferably magnesium hydroxide.

Abstract: A telecommunications enclosure for housing lines of a telecommunications cable. The telecommunications cable includes a sheath surrounding the telecommunications lines. The enclosure includes a housing for retaining telecommunication lines therein, the housing including at least one inlet/outlet port to receive a telecommunications cable. The enclosure further includes a cable gripping device disposed in the housing. The cable gripping device includes a cable clamp and a high friction gripping surface. In one aspect, the high friction gripping surface includes a flexible abrasive material that surrounds a substantial portion of a perimeter of the telecommunications cable and is disposed between the cable sheath and the cable clamp. In other aspects, the high friction gripping surface comprises an integrally formed roughened inner band surface portion that includes a plurality of sharp protrusions. The cable gripping device can secure the cable against a pulling force of at least 100 lbs.

Abstract: An apparatus for securing a line such as, for example, a cable or the like, thereto is described. In an exemplary embodiment, the apparatus is coupled to an electrical box into which the cable extends.

Abstract: In a printed circuit board and its heat dissipating metal surface layout, a layer of copper foil is coated onto the printed circuit board for dissipating heat, and the surface of the copper foil is covered by an insulating coating, and a bare copper is formed on the surface of copper foil which is not covered by the insulating coating, and the bare copper is arranged in a cross shape, or in the shape of “#”, so that when the printed circuit board goes through a soldering furnace, the cohesion of solder is even instead of aggregating at a same position or the center, so as to obtain a larger protruding area and facilitate dissipating heat and transmitting current.

Abstract: In accordance with the present invention, it has been discovered that the addition of one or more cationic catalyst(s), such as onium salts as defined herein, provides improved flux compatibility of underfill formulations in the presence of flux, flux residues and/or reaction products thereof. Accordingly, there are provided methods for improving the flux compatibility of underfill formulations in the presence of flux, flux residues and/or reaction products thereof. In accordance with another embodiment of the present invention, there are provided methods for improving HAST performance of underfill formulations, especially in the presence of flux, flux residues and/or reaction products thereof. In accordance with another embodiment of the present invention, there are provided methods for preparing underfill formulations having improved flux compatibility, especially in the presence of flux, flux residues and/or reaction products thereof.

Abstract: Two symmetrical pieces form an escutcheon that seals the gap between a pipe or conduit and the surface through which it penetrates and support the pipe or conduit. The device is surface mounted with threaded mechanical fasteners which can be adjusted to vary the compression of the sealing gaskets. The escutcheon can be installed without requiring any manipulation of the pipe or conduit. The escutcheon can be removed and reinstalled repeatedly without any degradation in function.

Abstract: A drive collar is disclosed for use in a percussion drilling apparatus of the type for boring into the earth. Embodiments of the drive collar include a generally tubular, one-piece body further having an inner surface, an outer surface, a first end and a second end. Embodiments further include a threaded section on the outer surface, a retention mechanism on the inner surface, a plurality of splines on the inner surface; and a shoulder on the outer surface.

Abstract: A core drill assembly with replaceable fluid nozzles permitting effective total flow area adjustment (TFA), substantial optimization of hydraulic force at the cutting face to improve rate of penetration (ROP) and core quality. At least one seal assembly to restrict drilling fluid flow while permitting mutual rotation between the core head ID and the lower shoe is disposed in an annulus defined therebetween.

Abstract: A technique provides a drilling system and method in which a drilling assembly is delivered downhole on coiled tubing. The drilling assembly comprises a drill bit and a motor to rotate the drill bit for drilling of a borehole. A steerable system is used to steer the drill bit, thereby enabling formation of deviated boreholes.

Abstract: A system for pumping fluid (e.g., but not limited to, drilling fluid), the system having pump apparatus with a pumping section and a motor section, the pumping section having an inlet and an outlet, the motor section having a shaft for reciprocating in and out of the pumping section to alternately suck fluid into the inlet and pump fluid out the outlet, and the motor being a permanent magnet linear motor for moving the shaft in a reciprocating motion, e.g., but not limited to, vertically or horizontally; and methods for using such a system.

Abstract: A safety joint that allows disconnection from a downhole section of a drill string without rotating the drill string. In an example class of embodiments, the innovative safety joint includes a sleeve with a j-slot that fits to a lug attached to the mandrel. A piston is attached to the sleeve. The safety joint is disconnected by first pulling up on the string to shear a set of shear pins, the upward movement also lifting the sleeve and piston. As the piston lifts, a passage through a part of the piston allows fluid to move from an upper chamber to a lower chamber. A valve prevents fluid from moving back up into the upper chamber, so that the lower chamber acts as a stop to prevent the piston and sleeve from lowering again. Downward pressure on the drill string forces a lug against the j-slot, causing the sleeve to rotate until the lug is aligned with a vertical slot of the j-slot.

Abstract: A drill bit for drilling a borehole in earthen formations. In an embodiment, the bit comprises a bit body having a bit face comprising a cone region, a shoulder region, and a gage region. In addition, the bit comprises at least one primary blade disposed on the bit face, wherein the at least one primary blade extends into the cone region. Further, the bit comprises a plurality of primary cutter elements mounted on the at least one primary blade in the cone region. Still further, the bit comprises a plurality of backup cutter elements mounted on the at least one primary blade in the cone region, wherein the at least one primary blade has a cone backup cutter density and a shoulder backup cutter density, and wherein the cone backup cutter density of the at least one primary blade is greater than the shoulder backup cutter density of the at least one primary blade.

Abstract: A roller cone drill bit having a bit body with at least one support arm extending from the bit body. Each support arm may have an interior surface and exterior surface with an associated spindle extending from the interior surface. A respective cone assembly may be rotatably disposed on each spindle. A gap formed between interior portions of each cone assembly and exterior portions of the associated spindle with a fluid seal disposed in the gap to block fluid flow therethrough. Each cone assembly includes a generally circular back surface disposed adjacent to the interior surface of the associated support arm. A flow diverter groove formed in the interior surface of each support arm spaced from the associated spindle. Each diverter groove having a variable geometry to enhance the flow of fluid containing downhole debris away from the associated real assembly, and each diverter groove having a variable geometry.

Abstract: The present invention relates to an apparatus in tools for down the hole drilling, which comprises a pilot drilling bit (10), a reamer (8) and a pilot body (1) which is disposed to support the reamer (8) and the pilot drilling bit (10) at the end of a casing tube (2), with the reamer (8) on the one hand in a closed position in which the parts of the tool are concentric with one another and displaceable through the casing tube (2), and on the other hand, an open position in which at least a part of the reamer (8) is located radially outside the casing tube (2), the pilot body (1) being provided with a male portion (7) which extends through the reamer (8) and is in engagement with the pilot drilling bit (10) for transferring rotation and percussion energy to at least the pilot drilling bit (10).

Abstract: A power slip that utilizes modified SDXL slips and regular drilling bowls that fits to the pin drive master bushings of the rotary table and utilizes the depth of the drive pin holes as part of the actuators, thus allowing the power slip to set lower for added clearance and safety during drilling operations. Cables are anchored to a base plate and slip linkages and slip connectors are pivotally mounted to the slips and to the top plate so that, when the lift cylinders are actuated, the slips are moved to the released position. This two-stage linkage and cable design maximizes the movement of the slip assemblies with minimum vertical movement of the power slip's housing.

Abstract: Capacitive force-measuring device based load sensing platform is disclosed. In one embodiment, a load sensing platform includes a sensor surface to have one or more capacitive force-measuring devices arranged in an array, a base surface placed on top of the sensor surface to provide a contact surface of a load applied to the load sensing platform, and a control module to process data of the one or more capacitive force-measuring devices when the load is applied to the base surface. Moreover, the load sensing platform includes a communication module of the control module to communicate the weigh, position, temperature, humidity, or vibration of the load through a wired channel and/or a wireless channel. The load sensing platform may further include an alert module to generate an alert signal when a change in the position of the load exceeds a threshold value.

Abstract: A circuit for an acoustic wave switch or sensor having a resonant acoustic wave cavity detects a touch or sensed event using a time domain approach. The circuit includes a controller that drives an acoustic wave transducer to generate a resonant acoustic wave in the acoustic wave cavity during a first portion of a sampling cycle. In a second portion of the sampling cycle, the controller monitors the time that it takes for the acoustic wave signal from the transducer to decay to a predetermined level. Based on the decay time, the controller detects a sensed event, such as a touch on the acoustic wave switch/sensor.

Abstract: A vehicular body panel energy generator system is disclosed. An illustrative embodiment of the system includes a vehicle body and a plurality of body panels forming the vehicle body. At least one of the body panels comprises a vehicular solar panel. A method of generating and utilizing electrical power in a vehicle is also disclosed.

Abstract: A motorized wheelchair having right and left motorized rear wheels, and fixed front wheels in which a plurality of rollers rotatable in a direction orthogonal to an alignment direction of wheels are disposed therearound, comprises transmission rollers to transmit the rotation of the rear wheels to the front wheels while being disposed at a transmission position between circumferential surfaces of front and rear wheels in order to easily perform the switching to the four-wheel drive as necessary, a roller supporting arm for rotatably and oscillatingly supporting the transmission rollers in the front-rear direction of the wheelchair, and transmission roller pressure-contact springs for urging the roller supporting arm in a direction of the transmission position so as to be pressure-contacted with the circumferential surfaces of the wheels at the transmission position.

Abstract: This invention generally relates to traction assemblies for use as wheel replacements generally for heavy and/or large vehicles and also to components therefor. The traction assembly generally comprises a sprocket wheel adapted to be mounted to one of the axles of the vehicle, a frame adapted to be pivotally mounted to the vehicle, idlers wheels mounted at the fore and at the aft of the frame and road wheels mounted therebetween and a traction band mounted around the sprocket wheel, the idlers wheels and the road wheels and cooperating therewith for propulsion.