Abstract: A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are preformed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.

Abstract: A tubing string assembly for fluid treatment of a wellbore includes substantially pressure holding closures spaced along the tubing string, which each close at least one port through the tubing string wall. The closures are openable by a sleeve drivable through the tubing string inner bore.

Abstract: A formation tester tool can include a longitudinal probe drill collar having a surface, a formation probe assembly located within the probe drill collar, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the probe drill collar surface, the piston being slidingly retained within a chamber, a seal pad located at an end of the piston, the seal pad including an outer surface defining a partial cylindrical surface. The piston includes an outer surface having non-circular cross-sectional shape and the chamber includes an inner surface having a non-circular shape similar to the shape of the piston outer surface. The formation tester tool can include interchangeable draw down assemblies and a flow bore having a curving path.

Abstract: Improved methods for well stimulation and completion are provided. More particularly, the methods relate to stimulating and completing well bores while controlling formation sand migration and proppant flowback. One embodiment provides a method comprising: providing a subterranean formation penetrated by a well bore wherein the subterranean formation comprises at least one fracture; placing proppant coated with a tackifying agent into the far-well bore area of the fracture, wherein the far-well bore area of the fracture is an area within the fracture at least about 2 feet from the well bore in a direction substantially orthogonal to the well bore axis; and placing an agent capable of controlling particulate flowback into the well bore or near-well bore area of the fracture.

Abstract: Provided herein are methods for controlling the migration of particulates within a portion of a subterranean formation that comprise aqueous tackifying treatment fluids, curable resin compositions, and/or noncurable resin compositions.

Abstract: An apparatus to protect the mounting area of casing when subsequently attaching a tubular is disclosed. A sleeve that defines a sealed cavity having a loose incompressible material inside covers the mounting location on the casing. The cementing of the casing takes place through the sleeve. After the cementing, the sleeve is drilled out and the incompressible material is removed to the surface with the drill cuttings. A tubular is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. At the end of expansion, the run in shoe on the tubular is retrieved.

Abstract: A flow completion system for controlling the flow of fluid from a well bore comprises a tubing spool which is positioned over the well bore, a tubing hanger which is landed in the tubing spool, a first pressure-containing barrier which is secured to the tubing hanger and which comprises a portion that sealingly engages the tubing spool, and a second pressure-containing barrier which is secured to the tubing hanger and which comprises a portion that sealing engages the tubing spool. In addition, each of the first and second pressure-containing barriers is capable of isolating the well bore from the environment during the production mode of operation of the flow completion system.

Abstract: A method for producing gas from a well with low pressure involves running a bottom hole pressure test to graph a P-Q curve. The operator computes a frictional pressure drop due to friction of the gas flowing through the production tubing to the surface. A packer is set above perforations in the well. A screw pump is selected that has a capacity equal to the sum of the frictional pressure drop plus a desired wellhead pressure. The screw pump has a flow rate capacity determined from the P-Q curve. The operator may vary the frequency of a downhole motor to achieve the desired wellhead pressure.

Abstract: An actuator operatively coupled to a wellbore tool is activated upon receiving fluid that a predetermined applied pressure. When the fluid string reaches the predetermined applied pressure, the actuator undertakes a specified action such as longitudinal movement, rotation, expansion, etc. that actuates or operates the wellbore tool. Premature actuation of the wellbore tool is prevented by applying a resistive force to the actuator that, alone or in cooperation with another mechanism, arrests movement of the actuator. This resistive force is generated by applied pressure of the fluid in the work string.

Abstract: There is disclosed an improved expandable centraliser (20;120;220;320), which may optionally also be adjustable, and a related downhole assembly and a method of completing a well. Previous art has suffered from a number of problems and essentially attempted to mitigate the effect of pipe expansion, i.e. using tension caused in the centraliser body. The centraliser (20;120;220;320) of the invention uses the expansion of the tubing to cause compressive forces, which are exerted over known distances to energise blades of the centraliser by using relative motion caused by said expansion. The expandable centraliser (20;120;220;320) comprises at least one first member (30;130;230;330), and at least one second member (35;135;235;335), wherein, in use, relative circumferential motion of the at least one first and second members (30,35;130,135;230,235;330,335) causes radial motion of at least one portion (40;140;240;340) of the expandable centraliser (20;120;220;320).

Abstract: An apparatus for performing a downhole operation in a wellbore comprises a tool string deployed on a slickline into the wellbore, where the tool string comprises a controller and a tool. A motion detector is disposed in the controller and senses motion of the tool string and generates a first signal in response thereto. A device disposed in the controller detects a downhole parameter of interest and generates a second signal in response thereto. A processor in the controller acts according to programmed instructions to activate the tool when the first signal is below a first preset threshold for at least a preset time interval, and the second signal exceeds a second preset threshold. A method of using the apparatus is also provided.

Abstract: A flexile shoe to protect a horse's hoof, made of a moldable composition, and reinforced throughout with pliant metal, and further reinforced with a hard wear insert at the toe of the shoe. A method of molding the shoe, and of bonding the shoe to the hoof with adhesive.

Abstract: A two-stage hydraulic pressure fire protection sprinkler piping system includes a metal pipe section and a plastic pipe section. The metal pipe section may be connected to a high pressure water supply source while the plastic pipe section delivers water of a predetermined pressure level to spray sprinkler heads to provide a selected fire extinguish water spray pattern in a floor area of a multi-storey building. The high pressure in the metal pipe section is reduced to the predetermined level by a pressure reducing valve connected between the metal pipe section and the plastic pipe section to prevent occurrence of distorted water spraying pattern and pre-matured strain aging of the plastic material of the plastic pipe section.

Abstract: A hybrid fire extinguisher includes a solid propellant gas generator. The properties of the solid propellant selected for the gas generator can provide a predetermined discharge profile. Fire extinguisher discharge characteristics can be tailored for unique applications. In one embodiment, the discharge of the fire suppressant is controlled to be substantially constant throughout the duration or, at least, the majority of the discharge period.

Abstract: A thermal detector for creating an actuation signal in response to an elevated temperature condition includes an energy storage system having a movable member movable between a first position and a second position and a biasing member for urging the movable member to the second position. A thermal sensor includes a degradable member positioned holding the movable member in the first position against a bias of the biasing member. The degradable member is selected to degrade in response to an elevated temperature.

Abstract: The present invention relates to ordnance which is dropped by an aircraft over a forest fire to snuff out the available oxygen fuel supply to the fire. More specifically, the invention relates to ordnance which is comprised of a dispenser, missile or rocket containing a plurality of submunitions. Each submunition is actuated to detonate over the target zone at a preset elevation via altimeter actuators on the fuze and each dispenser is triggered to dispense the payload of submunitions based on the geographical positioning of the ordnance.

Abstract: A soil conditioning device having a series of peripheral ridge members having a leading and trailing prow shaped surface circumscribing a disc, wheel or drum and a method of use. Optionally the prow shaped peripheral ridge members are joined by sub-ridge members forming a single ridge of varying heights circumscribing the disc, wheel or drum.

Abstract: A pneumatic power tool in which a throttle valve controls the rate at which the pressurized air within the tool may be released. By doing so, the rotatable motor may not only be quickly accelerated through the use of the pressurized air but, furthermore, may be quickly decelerated by using the same pressurized air. The subject invention is also directed to a method for controlling the speed of a rotating pneumatic power tool by blocking the flow of the exhaust air.

Abstract: A vibration drill unit capable of obtaining an intensive drilling force. The vibration drill unit includes a first ratchet, anon-rotatable second ratchet having a claw engageable with the claw of the first ratchet, and a main body frame for accommodating a motor, a spindle, the first ratchet and the second ratchet. The respective claws of the first ratchet and the second ratchet include the first inclined surfaces formed so as to be engaged in the rotation direction by rotations of the first ratchet and so as to be separated from each other, the second inclined surfaces 34a-2 and 35a-2 having greater inclination in the reversed direction than the first inclined surfaces, top parts that link the upper parts of both inclined surfaces to each other, and flat parts that link the bottom parts of both inclined surfaces to each other.

Abstract: As system for clamping an rotary tool accessory disc or blade to an output shaft of a rotary tool comprising a cam clamping mechanism and a clutch assembly wherein the cam clamping mechanism comprises: a head element threadably engageable with the output shaft at a location axially outward of the accessory disc; a cam rotatably connected to the head element and rotatable between a clamped and unclamped position, wherein the clamped position the cam exerts a compression force axially inward against the accessory disc or blade; and wherein the clutch assembly comprises: at least one first type of disc located coaxially on and keyed to the output shaft; at least one second type of disc located coaxially on the output shaft and in planar parallel contact with the first type disc; and an inner washer having an internal bore, the inner washer located coaxially on the output shaft, axially outward of and surrounding the first type disc and the second type disc, the inner washer keyed at the internal bore to the seco

Abstract: The invention is based on a power tool, in particular an angle grinder, having a motor and a gear. It is proposed that the motor and/or the gear is embodied as a mountable function module.

Abstract: A non-metallic electrical wiring box having a fast set screw mounting socket for mounting electrical devices inside the box. The box includes a pair of side walls, a pair of end walls, a back wall, a front opening and one or more fast set screw mounting sockets in each end wall, or connected to each end wall, for receiving a mounting screw. Each socket includes: a socket wall, preferably a cylindrically-shaped wall, an interior wall surface, a first end, a second end and a mid-region. The first end corresponds to the front opening of the box and the mid-region is between the first and second ends of the fast set screw mounting socket. Each socket also has a center slot in the socket wall, which preferably bisects the socket wall and extends from about the mid-region to the second end of the socket and defines two or more flexible socket wall sections.

Abstract: This invention pertains to an electrical box assembly for securing to a stud using an adhesive. The assembly comprises an electrical enclosure, a bracket and at least one pair of opposed pads. The bracket is affixed to the enclosure and defines a stud-receiving cavity extending along an edge of the enclosure. The at least one pair of opposed pads are substantially disposed within the cavity and have a portion thereof for engaging the stud. The pads are sized and configured to receive the adhesive on the portion.

Abstract: To provide a flat cable clamp which can not only prevent breakage of a hinge but also limit a bending direction of the hinge, First and second protective protrusions 36, 43 are disposed in the vicinity of both side edge surface 26, 27 of first and second thin-walled hinges 14, 15 so as to be opposed to the both side edge surfaces 26, 27 of the first and second thin-walled hinges 14, 15, respectively. The first and second hinge protective protrusions 36, 43 limit bending directions of the first and second thin-walled hinges 14, 15, on the occasion that first and second covers 12, 13 engage with a clamp main body 11 so as to clamp down a flat cable 60 between the first and second covers 12, 13 and the clamp main body 11.

Abstract: The invention is an outdoor electrical cord connection protector. A pair of mated covers is at least partially hinged along a common access. Each mated cover provides a snap together wire entrance at one end and a wire exit at the other end of the snap together covers. Each wire entrance and wire exit opens to a snap together plug opening adapted to hold at least two mated plugs of an outdoor string of decorative lights. A seal can be affixed to each of the entrances of the protector. The seals help keep the protector water tight and well as protect against other environmental hazards such as dirt, bugs, etc.

Abstract: One embodiment of the invention comprises an improved via structure for use in a printed circuit board (PCB), and method for fabricating the same. The via allows for the passage of a signal from one signal plane to another in the (PCB), and in so doing transgresses the power and ground planes between the signal plane. To minimize EM disturbance between the power and ground planes, signal loss due to signal return current, and via-to-via coupling, the via is shielded within two concentric cylinders, each coupled to one of the power and ground planes.

Abstract: A circuitized substrate which includes a high temperature dielectric material in combination with a low temperature conductive paste, the paste including an organic binder component and at least one metallic component. The flakes of the metallic component are sintered to form a conductive path through the dielectric when the dielectric is used as a layer in the substrate.

Abstract: A circuitized substrate which includes a conductive paste for providing electrical connections. The paste, in one embodiment, includes a binder component and at least one metallic component including microparticles. In another embodiment, the paste includes the binder and a plurality of nano-wires. Selected ones of the microparticles or nano-wires include a layer of solder thereon. A method of making such a substrate is also provided, as are an electrical assembly and information handling system adapter for having such a substrate as part thereof.

Abstract: In one embodiment, a laminated printed circuit board translator is provided. In some embodiments, the translator includes a receiving board adapted to receive a pin, the receiving board includes a plated via extending through the receiving board and has a hole for receiving a pin. An interface board laminated with the receiving board has a controlled depth via extending through it to contact a conductive trace. The conductive trace extends between the receiving board and the interface board to connect the plated via of the receiving board with the controlled depth via of the interface board. The controlled depth via is configured so that it is capable of being plated through a single sided drilled opening in the interface board. Some embodiments have a pad on the interface board connected to the controlled depth via.

Abstract: A press-fit pin for making electrical contact with a via is a self-supporting pin having a serpentine shape. The pin may have at least two bends therein, so as to make contact with the via at multiple pairs of contact points separated longitudinally along the length of the pin. This use of a single-member contact with the via may allow use of smaller vias. In a direction longitudinally down the pin, successive pairs of contact points may be on opposite sides of the pin, so as to provide normal forces on opposite sides of the via and the pin, thus tending to provide some degree of balance in forces between the pin and the via. The pin may have rounded, coined corners and a tapered tip, in order to facilitate insertion of the pin into the via, without undue force, and without damage to either the pin or the via.

Abstract: An electromagnetic wave shielding sheet comprises a transparent substrate 11 and a metal layer 15 provided on one surface of the transparent substrate 11 through an adhesive layer 13. The metal layer 15 includes a mesh part 103 and a frame part 101 surrounding the mesh part 103. The frame part 101 includes at least one transparent part 105 that is a metal-layer-free area. Preferably, the transparent part 105 includes a metallic portion 105a in a geometric pattern. Light transmitted by or reflected from the transparent part 105 is detected, thereby the transparent part 105 can be used as a register mark for detecting the position of the mesh part 103.

Abstract: In an electromagnetic shield an electromagnetic sealing system is provided comprising an aperture (3) defined by a jamb (6) in a fixed wall (2), a movable closing element (4) defined by a frame (7) designed to close said aperture (3), a conductive contact element (5) disposed between the jamb (6) and the frame (7) so as to create a continuous electrical contact between the fixed wall (2) and the movable closing element (4), when the movable closing element is in the closed position, and operating means (10) designed to act on the conductive contact element (5) to bring it from a position not providing an electromagnetic seal in which a continuous electric contact between the fixed wall (2) and the mobile closing element (4) is not created, to an electromagnetically sealing position in which a continuous electrical contact is created between the fixed wall (2) and the movable closing element (4).

Abstract: A sealing member includes an elastomeric interior portion and a rigid exterior portion. At least one passage extends through the elastomeric interior portion from a first end to a second end of the sealing member. The passage is configured to receive at least one longitudinal member therein. The elastomeric interior portion is configured for sealing engagement with the longitudinal member extending therethrough, and the rigid exterior portion is configured for sealing engagement with an entry port of an enclosure.

Abstract: The invention relates to a method for controlling rock drilling, and a rock drilling arrangement At least one feed channel (37) of a feed actuator (3, 33) is pro-vided with a restrictor (46), which causes a pressure drop if the penetration rate increases and, consequently, a flow through the restrictor increases. A pressure difference and an increase in the penetration rate can be detected by sensing the pressure before the restrictor and after the restrictor. When the feed rate increases, a hydraulic system is arranged to decrease a percussion pressure.

Abstract: Method of impact loosening of thread joints at rock drilling, whereby vibrations from a drill string (1) are sensed at the same time as a rock drilling machine (2) exerts the drill string (1) to impacts without feeding the drill string (1) against a ground (3), that the sensed vibrations are supplied to an analysis tool (4), that the sensed vibrations are compared with known vibration patterns by the analysis tool and that a signal is sent to a control system (5) for controlling the rock driling machine (2) for stopping the impact device of the rock drilling machine when the analysis tool detects that the sensed vibrations correspond to the known vibration pattern which marks that the thread joints have been loosened by impact.

Abstract: An APD Device provides a pressure differential in a wellbore to control dynamic pressure loss while drilling fluid is continuously circulated in the wellbore. A continuous circulation system circulates fluid both during drilling of the wellbore and when the drilling is stopped. Operating the APD Device allows wellbore pressure control during continuous circulation without substantially changing density of the fluid. The APD Device can maintain wellbore pressure below the combined pressure caused by weight of the fluid and pressure losses created due to circulation of the fluid in the wellbore, maintain the wellbore at or near a balanced pressure condition, maintain the wellbore at an underbalanced condition, reduce the swab effect in the wellbore, and/or reduce the surge effect in the wellbore. A flow restriction device that creates a backpressure in the wellbore annulus provides surface control of wellbore pressure.

Abstract: An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel cell and inverter, or multiple fuel cells with synchronized inverters. , are used to power an electric motor controller and electric motor. The electric motor operates hydraulic pumps used to advance a drill string and downhole tool through the earth and operate various machine functions. Mechanical functions of the drilling machine may also be satisfied through the use of electric rotary actuators (e.g., motors) and linear actuators (e.g., linear motors and solenoids).

Abstract: A cutting device for downhole operations comprises a first cutting structure, and a second cutting structure, wherein at least the second cutting structure is selectively presentable for operation. A method of performing a downhole cutting operation comprises running into a well bore a cutting device comprising a plurality of cutting structures, performing a first cutting operation with a first cutting structure of the cutting device, selectively presenting a second cutting structure of the cutting device, and performing a second cutting operation with at least the second cutting structure. The method may further comprise aligning the cutting device to allow the second cutting structure to be selectively presented.

Abstract: A controlled leakage seal assembly having a first stationary portion adapted to be connected in substantially fluid-tight relation to a source of drilling fluid and a second portion adapted to be connected in substantially fluid-tight relation to a rotary portion including a washpipe. The seal includes a first housing and a stack of radially inwardly extending, spaced apart annular stators, and a second seal housing and stack of spaced apart radially outwardly extending annular rotors interleaved with one another. The seal assembly, a cartridge, permits the first and second housings to rotate relative to each other in substantially fluid-tight relation except for the drilling fluid entering an outlet region at greatly reduced pressure. In a preferred embodiment, the seal is held by a sleeve that permits the cartridge to be removed and replaced while the fluid connections to the sleeve remains.

Abstract: There is provided a down hole hammer having a drive sub or chuck (10) having splines (11), and a drill bit (13) having longitudinal splines (23) extending toward a bit head (15) having a bit face (16) bounded by a series of gauge row mounting portions (17), each of which has a carbide button insert (20). The bit shank splines (23) cooperate with chuck splines (11) to rotate the bit (13), the respective splines (23), (11) being proportioned to allow hammer motor exhaust air to pass down the splines. Drillings (37) are drilled from the termination of the spline milling, through to intersect with fluid passage (33) extending from sample recovery bore (22) to the bit face (16). A bore seal (32) is formed by milling a plurality of circumferential grooves (36), fed by a plurality of transverse holes (35) intersecting the air passage (33). Fluid passage (33) may be altered to fine tune the airflow to suit specific ground conditions, by effecting a change in diameter at point (38).

Abstract: A method serves to process output signal of a measuring transducer in a force-measuring device, in particular in a balance, wherein the measuring transducer produces a measuring signal representative of a load acting on the device and the measuring signal is filtered in a variable analog filter and/or, after processing in an analog/digital converter, the measuring signal is filtered in a variable digital filter, in order to remove unwanted signal components that are caused by disturbances affecting the force-measuring device, in particular by changes in the weighing load.

Abstract: An installation for filling receptacles by weight, the installation comprising a platform having secured thereto at least one filler spout and a weighing device which is vertically below the filler spout and which comprises a receptacle support member associated with a weighing member. The installation is distinguished in that the weighing device includes a link member between the support member and the weighing member, the link member enabling the support member to be moved relative to the weighing member between a high position in which the filler spout is engaged in the receptacle, and a low position in which the filler spout is disengaged from the receptacle, and in that the weighing device includes a locking member for locking the link member with the support member in its high position.

Abstract: A luggage weight measuring device for integration into a luggage case, or between the luggage case and handle or for mounting to the luggage case handle. In one embodiment at least one electronic load measuring sensor is mounted directly between the handle and the luggage case, for example to a deformable member which deforms as the handle is lifted to take up the load carried by the luggage case. Deformation is mathematically related to the load. A processor determines the load corresponding to the deformation as detected by the sensors and displays the load on a user viewable display on the luggage case or handle.

Abstract: The invention relates to a non-encased weighing cell which with a view to resistance to environmental influences and high measuring accuracy has been improved to the effect that at least the predominant part of the surface (12) and/or of the surface (14) is inclined such that in the installed state, as intended, of the weighing cell any water hitting the weighing-cell body (1) can flow away, wherein the angle ?1 between the inclined part of the surface (12) and the perpendicular circumferential surface of the trunk (3) and/or the angle ?2 between the inclined part of the surface (14) and the circumferential surface of the foot (4) is larger than 90°, and in particular is between 93° and 120°. Furthermore, a non-encased weighing cell is stated in which the balancing electronics are provided in one of the transverse holes (7).

Abstract: A method serves to optimize the behavior of an electronic force-measuring device, in particular a balance that comprises a measuring transducer through which a measuring signal is formed which is representative of a load applied to the force-measuring device, which measuring signal is delivered to a signal-processing unit that is supported by at least one processor and at least one memory storage unit and serves to process digital signals.

Abstract: An advanced control for a powered hand truck. The powered hand truck includes an electric motor, a power source, a programable motor controller, and a transaxle, which are adaptable to existing hand trucks, or may be integrated into a new powered hand truck. The motor controller controls the motor to provide consistent speed independent of load weight or incline, and further provides regenerative braking. The advanced control may be wired or wireless and provides a touch sensitive circuit to command stop if the operator is not holding the handle, and an electronic potentiometer. The wireless control further includes a unique code for validating speed commands and initiates deceleration if the control signal is lost.

Abstract: A multi-position support mechanism for an implement that employs an elongate member pivotably mounted at one end to the tongue of the implement and having a hook on the opposing end. The pivotable connection between the tongue and the elongate member provides a plurality of generally fixed positions, at least one where the hook supports the vehicle pto coupler, at least one for supporting hydraulic hoses, and at least one storage position where the elongate member and the hook are not in use.

Abstract: An off-road emergency vehicle includes an operator compartment with an environmentally controlled atmosphere and wireless communication devices. The modified, extended all-terrain vehicle frame supports an enclosed equipment compartment having a top and sides. The equipment compartment is large enough to enclose a full-length stretcher for someone in need of care in an off-road area. The equipment compartment also contains a bench for an emergency technician and storage. The vehicle includes a secondary power source used to supply power to the lighting system and equipment of the equipment compartment.

Abstract: A fuel cell vehicle includes: a vehicle body; a floor panel provided in the vehicle body that has a floor tunnel that bulges in substantially a center in the width direction of the vehicle body; a pair of front seats each having a seating surface and a seat back and disposed on the floor panel outside of the floor tunnel in the width direction of the vehicle body; seat rails provided between the front seats and the floor panel and adapted to be able to move the front seats in the longitudinal direction of the vehicle body; and a fuel cell stack having a plurality of unit fuel cells stacked in the longitudinal direction of the vehicle body, being disposed under the floor tunnel so as to be substantially parallel with the seat rails.

Abstract: In compact drive, spiroid gear unit, and method for manufacturing a drive unit that includes at least an electric motor, a brake, a gear unit, and a frequency converter, the output shaft of the gear unit and the rotor shaft are positioned in parallel to each other, and the shaft-center distance is determined by at least one gear stage. The first gear stage includes a first toothed member connected to the rotor shaft, and a second toothed member, which engages with the first toothed member and is connected to an intermediate shaft, the brake, including at least a brake-rotor shaft, being integrated in the housing of the compact drive, the brake-rotor shaft being parallel to the rotor shaft, and the brake-rotor shaft being connected to a toothed member, which engages with the second toothed member.