Abstract: Combined injection, production and transportation method for a production well and an injection well of a hydrocarbon-bearing formation and flow line system for surface transportation of a product stream includes introducing a mixture of surfactant, co-surfactant and carrier fluid into each of the wells so that the mixture flows into porous media surrounding the wells; holding the reservoir mixture in the production well in the presence of water for a time sufficient to form water film on surfaces of the porous media surrounding the production well; injecting injection fluid into the injection well while producing from the production well, whereby hydrocarbons flow from the porous media around the injection well toward the production well, introducing an injection mixture of a surfactant and carrier fluid into a desired point in tubing of the production well so that the tubing injection mixture mixes with the production stream forming an emulsion, and producing the emulsion.

Abstract: An apparatus for combustion steam generation is provided, which includes a combustion chamber having an inlet end and an outlet end; a manifold at the inlet end configured to introduce a fuel and an oxidizer into the combustion chamber; an outer casing defining a coolant chamber between the outer casing and the combustion chamber; and a plurality of converging coolant inlets for conducting coolant from the coolant chamber into the combustion chamber at or near the outlet end of the combustion chamber. The converging coolant inlets are radially disposed around the combustion chamber and preferably configured to produce a converging-diverging nozzle from the coolant conducted into the combustion chamber. The device may be used in systems and methods for enhanced recovery of subterranean hydrocarbons, by deployment into and operation in a wellbore, where the produced steam and combustion gases are injected into a hydrocarbon formation to enhance hydrocarbon recovery.

Abstract: The present invention relates to the use of crude glycerol (CG) as a constituent of a formulation for mineral oil production and to a process for producing mineral oil from mineral oil deposits having inhomogeneous permeability. The inventive use of crude glycerol (CG) makes it possible to modify the rheological properties of the inventive formulations (F) within wide ranges, and makes it possible to adjust them to the geotechnical parameters, the environmental conditions and the nature of the mineral oil in different mineral oil deposits.

Abstract: The present invention relates to formulations (F) based on crude glycerol (CG), cellulose ether and urea, to a process for producing mineral oil from mineral oil deposits having inhomogeneous permeability and to a process for producing formulations (F) comprising crude glycerol (CG). The rheological properties of the inventive formulations (F) are modifiable within wide ranges, and can be adjusted to the geotechnical parameters, the environmental conditions and the nature of the mineral oil in different mineral oil deposits.

Abstract: A shunt tube entry device comprises one or more inlet ports, a shroud disposed at least partially about a wellbore tubular, and a shunt tube in fluid communication with the chamber. The shroud defines a chamber between the shroud and the wellbore tubular, and the chamber is in fluid communication with the one or more entry ports.

Abstract: Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids.

Abstract: Casing assemblies and methods of using the casing assemblies to isolate selected sections of a subterranean wellbore are provided. Also provided are methods of fabricating the casing assemblies. The casing assemblies comprise one or more water-swellable tubular collars disposed around the exterior surface of a conduit, such as a wellbore casing. The water-swellable collars are formed from a material comprising sodium bentonite, a swelling inhibitor and reinforcing fibers.

Abstract: A method and apparatus are presented for actuating a differential pressure firing head to actuate a perforating gun at a downhole location in a subterranean wellbore adjacent a formation. An exemplary method includes positioning the perforating gun and the differential pressure firing head at a downhole location on a tubing string and then communicating an applied fluid pressure to a wellbore annulus, a first chamber which communicates the applied fluid pressure to a low-pressure side of the firing head assembly, and a second fluid chamber which communicates the applied fluid pressure to a high-pressure side of the firing head assembly. The applied fluid pressure is then trapped within the second fluid chamber. When the applied pressure in the annulus is subsequently removed, a pressure differential is created across the firing head by the low pressure in the first chamber and the trapped applied pressure in the second chamber.

Abstract: A system for use with a subterranean well can include a fluid oscillator which discharges pulsating fluid from a tubular string in a direction at least partially toward an end of the tubular string proximate a surface of the earth. A method can include discharging a fluid from the tubular string, thereby applying a reaction force to the tubular string, which reaction force biases the tubular string at least partially into the well. Another method can include discharging a pulsating fluid from a fluid oscillator in a direction at least partially toward an end of the tubular string, and drilling into an earth formation with a drill bit connected at an opposite end of the tubular string in the well.

Abstract: An apparatus for servicing a wellbore comprising a housing defining an axial flowbore and comprising high-pressure ports, high-volume ports, and a mandrel slidably positioned within the housing, the mandrel defining a mandrel axial flowbore and being alternatingly movable from a first position to a second position and to a third position, wherein, when the mandrel is in the second position, a route of fluid communication via the high-pressure ports is provided and a route of fluid communication via the high-volume ports is obstructed, wherein, when the mandrel is in the third, position, a route of fluid communication via the high-volume ports is provided, and wherein the apparatus is transitionable from the second position to the third position without communicating an obturating member to the apparatus, without removing an obturating member from the apparatus, or combinations thereof.

Abstract: A device is provided for fracturing a geological hydrocarbon reservoir including two packers defining between them a confined space in a well drilled in the reservoir; a pump for increasing the pressure of a fluid in the confined space; an apparatus for heating the fluid; at least one pair of two electrodes arranged in the confined space; and an electric circuit for generating an electric arc between the two electrodes, the circuit including at least one voltage source connected to the electrodes and an inductance between the voltage source and one of the two electrodes. The device permits improved fracturing of the reservoir.

Abstract: A method is provided for fracturing a geological hydrocarbon reservoir, including the static fracturing of the reservoir by hydraulic pressure, and the electrical fracturing of the reservoir by generating an electric arc in a well drilled into the reservoir. This enables the improved fracturing of the reservoir.

Abstract: A method for fracturing a downhole formation, includes: preparing an energized fracturing fluid including mixing gaseous natural gas and a fracturing base fluid in a mixer; injecting the energized fracturing fluid through a wellhead and into a well; and continuing to inject the energized fracturing fluid until the formation is fractured. An apparatus for generating an energized fracturing fluid for use to fracture a downhole formation, the apparatus includes: a fracturing base fluid source; a natural gas source; and a mixer for accepting natural gas from the natural gas source and fracturing base fluid from the fracturing base fluid source and mixing the natural gas and the fracturing base fluid to generate the energized fracturing fluid.

Abstract: The device is based on the principle of downhole shut-in of oil producing wells that do not flow to surface self-powered but require the injection of gas to lighten the fluid column and thus enable the well to produce. This downhole shut-in device comprises a check valve, an anchoring system, a seal system; an untethering system, a shock absorber and a sleeve for the protection of pressure and temperature memory probes. The objective of the downhole shut-in device is to obtain characteristic information of the fluid-rock system from variations in the pressures recorded in order to obtain the dynamic characterization of the reservoir.

Abstract: A riser and a method for reducing the risk of failure of a riser system comprising a riser (100) arranged between an installation and a subsea well the riser (100) having a bore (116) for conveying fluids therebetween, the method comprising the step of providing at least one vortex shedding member (111) in said bore (116) of said riser (100) and flowing the fluid between the subsea well and the installation.

Abstract: A method of evacuating hydrocarbons from a plurality of nested tubulars of a well pipe that extends from an underwater well tree includes an initial step of attaching a fluid transmission line to the underwater well tree, the fluid transmission line having one end portion forming the attachment to the tree and the other end portion attached to a pump that forces fluid under pressure to the tree and attached nested tubulars. Openings are formed through one or more tubulars of the nested tubulars at a selected location. A specially configured fitting is attached to the tubulars. The fitting seals the openings. The fitting has an expandable seal that is expandable responsive to rotation of a rotating member that rotates upon a saddle, pulling a tapered mandrel against the seal. The saddle surrounds the mandrel and bears against an outer tubular of the nested tubulars. The fitting mandrel has a bore. Hydrocarbons escape from the tubulars via the mandrel bore.

Abstract: A movable downhole tubing string for a downhole well. The well has a wellhead and a downhole pump. The movable downhole tubing string has a movable tubing string having a surface end adjacent to the wellhead and a pump end adjacent to the downhole pump. At least one of the surface end and the pump end is telescopically received within a stationary tubing section. The stationary tubing section is stationary relative to the wellhead. There is an actuator for telescopically moving the movable tubing string relative to the stationary tubing section.

Abstract: A tubular member has at least one drainage section including an inlet inlet and at least one self-adjustable flow control device to control the flow of fluid into the drainage section from a well. The flow control devices are located in an annular space surrounding a pipe between the inlet and an outlet is provided for fluid flowing into the drainage section. The annular space forms a flow path through the flow control device passing by a valve body arranged to adjust the flow area in response to the pressure difference across the flow control device and/or changes in density of the fluid. The flow control device includes a valve seat cooperating with the valve body. The valve body includes an annular resilient valve member arranged to be deformed at least in a radial direction, in order to reduce or increase the flow area through the flow control device.

Abstract: A downhole oilfield tool assembly comprises a mandrel, a ball valve oriented to block downwards flow through the mandrel in a closed position, a first piston located above the ball valve and at least partly around an outside of the mandrel. The first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly.

Abstract: Apparatus and method for connecting tubular members in a wellbore. A host tubular member has reinforcing annular members mounted thereon to provide regions of differing resistance to the radial load. When the host tubular member is expanded radially outwardly, within a second tubular member, each weaker region starts expanding first and seals the host tubular member against the second tubular member prior to the stronger region. Embodiments of host tubular members are described including members of progressive resistance, split rings, gripper elements and sealing elements.

Abstract: Apparatus and method for connecting tubular members in a wellbore. A host tubular member has annular members mounted within a receiving section to provide regions of differing resistance to the radial load. When a portion of a second tubular member is expanded radially outwardly within the receiving section a joint is formed between the members. Embodiments of host tubular members are described including recesses for the portion to form protrusions within, collapsible rings, channels and valves to expel fluid from the interface between the members and gripper elements and sealing elements to improve the joint.

Abstract: Methods and systems are provided for remotely operating a setting tool for a liner hanger (402) independent of a ball seating or dart landing. Operating the setting tool independent of the ball seating or dart landing may allow for a sufficient pressure differential to properly set the liner hanger.

Abstract: A multiple activation-device launching system for a cementing head comprises a launcher body and at least one launching chamber that are sized to receive one or more activation devices therein. The activation devices are launched into the principal process-fluid stream inside the cementing head, and may be darts, balls, bombs, canisters and combinations thereof. The launching chambers are in fluid communication with an external power source for launching the activation device into the principal process-fluid stream.

Abstract: A well barrier is for sealing off a first portion of a wellbore from a second portion of the wellbore, the first portion having a higher fluid pressure than the second portion. The well barrier is held in place in the wellbore by a holding means. The well barrier is preshaped to disintegrate in at least three barrier elements upon activation of a disintegration means, at least one of the barrier elements having a surface area facing the first portion of the wellbore that is larger than the surface area facing the second portion of the wellbore. A method is for controlling a disintegration of the well barrier.

Abstract: In a method for installing a firestop device (14) or insulation having a firestop effect, on a line (12) or pipe, whereby the firestop device (14) or the insulation having a firestop effect is placed, especially wrapped, completely around the line (12) or pipe, in the circumferential direction (U), it is provided that a flexible adhesive tape (16) containing heat-resistant fibers (18) in its lengthwise direction (L) is wrapped in the circumferential direction (U) of the line (12) or pipe completely around the firestop device (14) or the insulation having a firestop effect.

Abstract: A combination of electric tools includes a first electric tool and a second electric tool respectively having an independent power supply. The second electric tool starts working automatically responding to the startup of the first electric tool. Thereby the second electric tool starts automatically after the first electric tool is started to operate by a user without an extra operation of the user, which is convenient to the user.

Abstract: A handheld power tool includes a housing, a display device mounted on the housing, at least one light source mounted in the housing, and an integral, light transmissive lens member. The lens member includes a cover portion covering the display device to protect the display device from the environment, and a light pipe portion positioned and configured to transmit light emitted from the at least one light source to a location on the handheld power tool visible exteriorly of the housing.

Abstract: In an impact driver including an impact mechanism for percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool, the tool receptacle is embodied as a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft in order to prevent at least tool-free detachment of the clamping chuck from the output drive shaft.

Abstract: The housing assembly has a grip portion having a heightwise axis. The housing assembly includes a housing member having parallel upper and lower housing guide features spaced apart along the heightwise axis. The trigger member is mounted in the housing assembly to slide along a slide axis transverse to the heightwise axis. The trigger member includes parallel upper and lower trigger guide features spaced apart along the heightwise axis and mated with the upper and lower housing guide features. The upper and lower housing guide features and the upper and lower trigger guide features cooperate to limit the trigger member to a linear slide path relative to the housing assembly and inhibit cocking of the trigger member about a lateral axis transverse to each of the heightwise axis and the slide axis.

Abstract: A rotary tool includes a first longitudinal member, a second longitudinal member disposed across a region of a rod-shaped brush, a first elastic between the first longitudinal member and the second longitudinal member, and for causing the rod-shaped brush to rotate with a turn of the first longitudinal member, and a turn of the second longitudinal member, and a second elastic between the first longitudinal member and the second longitudinal member, and attached to the first and second longitudinal members. The first elastic is located on one side and the second elastic is located on the other side, regarding a boundary of a first axis or a second axis.

Abstract: A human-carried work machine is provided with an engine and an electric motor as a prime mover for driving a tool. The engine includes an output shaft that is connected to the tool, and the electric motor is configured to apply torque to the output shaft of the engine. The electric motor is an outer rotor-type brushless motor and includes a rotor that is fixed to the output shaft of the engine and a stator core that is fixed to a crankcase of the engine. The rotor includes a peripheral wall that surrounds the stator core and a magnet is disposed on an inner surface of the peripheral wall.

Abstract: A power tool an electric motor retained within a housing. A rechargeable battery is retained within the housing that is operatively connected to the electric motor. A power input port is supported within the housing that is operatively connected to the rechargeable battery. The power input port is configured to supply power to the rechargeable battery from an external power source. The rechargeable battery comprises a lithium based battery, and the power input port comprises a universal serial bus (USB) port configured to receive a USB connector.

Abstract: A sensor system includes a wiring harness including at least one wire, a grommet, a nugget, a sensor, and a harness sleeve, wherein the grommet includes at least one passageway configured to receive the wire and the nugget includes at least one terminal molded into the nugget and coupled to the wire. A mineral insulated cable may be coupled to the sensor and to the terminal and the harness sleeve may define at least one cavity configured to receive the nugget and at least a portion of the grommet. The harness sleeve may be coupled to the mineral insulated cable and may include a first crimp coupling the harness sleeve to the grommet. The harness sleeve may also include a second crimp coupling the harness sleeve to the nugget.

Abstract: An electrical box assembly includes an electrical box and a primary bracket. The primary bracket includes a first end panel for securing to a first surface of a stud; a second end panel for securing to a second surface of the stud and in a substantially parallel orientation to the first end panel; and mounting panel, joined to a first surface of the electrical box and located between the first end panel and the second end panel, the mounting panel having a length corresponding to a first stud depth. The primary bracket also includes an adaptation panel, between the mounting panel and the rear panel, having a length corresponding to a difference between the first stud depth and a second larger stud depth. The adaptation panel is selectively manipulated to position the front panel and the rear panel to accommodate either the first stud depth or the second stud depth.

Abstract: A charging-socket flap device for electric vehicles, including: a structure including an aperture and a jacket adjacent to the aperture, the jacket including an orifice; a movable gate forming a flap configured to close the aperture of the structure; an element hinging the gate housed in the jacket; a cover configured to close the orifice of the jacket. The cover is mounted on the orifice of the jacket to be a distance away from the orifice on at least one edge of the orifice in the closed position on the jacket, the cover being kept a distance away from the edge by a support making it possible for the cover to move with a damped movement toward the edge when a region of the vehicle body panel covering the flap device is impacted, or impacted by a pedestrian.

Abstract: An electric wire of the present invention includes: (a) a conductive wire divided into a plurality of regions by a first insulating film extending in a longitudinal direction; (b) a second insulating film that coats a longitudinal periphery of the conductive wire; and (c) a conductive pipe that surrounds, without any space, the conductive wire in the longitudinal direction while sandwiching the second insulating film. Each of the divided regions of the conductive wire has a minor axis less than twice as large as a skin thickness at a working frequency. A wall thickness of the conductive pipe is smaller than the skin thickness at the working frequency.

Abstract: An electrical cable includes at least one conductor and a barrier arranged externally to the at least one conductor. The barrier includes two first layers including an inorganic material and a second layer including a polymer-metal composite material, the second layer being interposed between the two first layers. The electrical cable also includes, in an intermediate position between the at least one conductor and the barrier, solely discontinuous layers and/or layers of non-thermally-collapsible materials.

Abstract: To provide an electric cable that can satisfy flame retardancy and battery fluid resistance in the CHFUS region provided in ISO 6722 and also satisfy wear resistance and low-temperature impact property by using a halogen-containing flame retardant. An electric cable in which a coat layer is formed of a resin composition that includes (A) 55 to 85 parts by mass of a polypropylene homopolymer, (B) 5 to 20 parts by mass of a polypropylene-based modified resin, (C) 5 to 20 parts by mass of a polyolefin-based copolymer, and (D) 5 to 15 parts by mass of a modified olefin-based elastomer, respectively and further includes 1 to 45 parts by mass of a metal hydroxide and 10 to 80 parts by mass of a halogen-containing flame retardant based on 100 parts by mass of the resins (A), (B), (C), and (D) in total.

Abstract: An alternative current (AC) power line, comprising: at least two conductive lines having an insulation sheath, and an insulation protective outer layer wrapping the aforementioned at least two conductive lines. The insulation protective outer layer includes: an insulation cladding layer and a spiral enhancing layer. The spiral enhancing layer is attached to the outer surface of the insulation cladding layer in a spiral way along the axial direction of the AC power line. Also, the spiral enhancing layer is jointed in a spiral pattern and protrudes from the outer surface of the insulation cladding layer. The spiral enhancing layer may be of a uni-spiral or multi-spiral structure. In another embodiment, the spiral enhancing layer is of a multi-spiral structure in an alterative thick-thin fashion which improves the anti-tension and anti-extension capabilities in the AC power line and facilitates visual differentiation or identification effects.

Abstract: An electrical connection between a first element and a second element formed by a solder ball bridge having at least three solder balls in physical contact with each other extending to electrically connect the first element and the second element. The solder ball bridge is particularly suitable for a disc drive system, to form an electrical connection between two elements such as between a piezoelectric microactuator element and the suspension assembly. Methods of making a solder ball bridge are also provided.

Abstract: A spacer for use in a twisted pair of electrical conductors said spacer includes a polymer strip and a series of openings in said polymer strip. The polymer strip is configured to be placed between two adjacent conductors of a twisted pair. The polymer strip and said series of openings are constructed so that the series of openings are not substantially crushed during a twinning process of twisting the adjacent conductors of the twisted pair.

Abstract: A cover sheath includes a main body being adapted to define a channel for accommodating at least one conducting cable extending there through, and a hook and loop arrangement disposed on at least a portion of an outer surface of the main body. The main body is made of an electrically conducting material.

Abstract: A resistance-formed substrate includes a first insulating layer, a first wiring formed on a first surface of the first insulating layer, a thin-film resistance layer formed on a second surface of the first insulating layer, and a first via-hole conductor. The first via-hole conductor penetrates through the first insulating layer, and is electrically connected to the first wiring and the thin-film resistance layer. The first via-hole conductor includes a metal part including a low-melting point metal and a high-melting point metal, and a paste resin part. The low-melting point metal includes tin and bismuth, and has a melting point of 300° C. or lower. The high-melting point metal includes at least one of copper and silver, and has a melting point of 900° C. or higher. The first via-hole conductor is in contact with the thin-film resistance layer at both the paste resin part and the metal part.

Abstract: A circuit board is formed such that a printed circuit board is connected to an injection molded circuit board. An internal circuit conductor is exposed at conductor part at a printed circuit board mounting part. Through holes are provided in the printed circuit board. The conductor part is formed substantially perpendicular to the circuit board mounting part, and is inserted into a through hole. A female screw part is formed in the vicinity of the conductor part in the printed circuit board mounting part. The female screw part can be screwed together with a bolt, which is a securing member. The printed circuit board is connected to the conductor part by solder. A hole is formed in advance in the vicinity of the solder on the printed circuit board. The bolt passes through the hole and is secured to the female screw part.

Abstract: A process for the manufacture of a reflective conductive film comprising: (i) a reflective polymeric substrate comprising a polymeric base layer and a polymeric binding layer, wherein the polymeric material of the base layer has a softening temperature TS-B, and the polymeric material of the binding layer has a softening temperature TS-HS; and (ii) a conductive layer comprising a plurality of nanowires, wherein said nanowires are bound by the polymeric matrix of the binding layer such that the nanowires are dispersed at least partially in the polymeric matrix of the binding layer, said process comprising the steps of providing a reflective polymeric substrate comprising a polymeric base layer and a polymeric binding layer; disposing said nanowires on the exposed surface of the binding layer; and heating the composite film to a temperature T1 wherein T1 is equal to or greater than TS?HS, and T1 is at least about 5° C. below TS-B.

Abstract: A multilayer rigid flexible printed circuit board including a flexible region including a flexible film having a circuit pattern formed on one or both surfaces thereof and a laser blocking layer formed on the circuit pattern and a rigid region formed adjacent to the flexible region and including a plurality of pattern layers on one or both surfaces of extended portions extended to both sides of the flexible film of the flexible region, and a method for manufacturing the same.

Abstract: A phosphorus-atom-containing oligomer is used as a curing agent for epoxy resin, the phosphorus-atom-containing oligomer being a mixture of a phosphorus-atom-containing compound represented by structural formula (1) below with n representing 0 and a phosphorus-atom-containing oligomer represented by structural formula (1) below with n representing 1 or more: (where R1 to R5 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or the like; X represents a hydrogen atom or a structural unit represented by structural formula (x1) below: where, in structural formula (x1), R2 to R5 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or the like), wherein a content of the phosphorus-atom-containing oligomer represented by general structural formula (1) with n representing 1 or more is in the range of 5 to 90% on a peak area basis in GPC measurement.

Abstract: An objective is to provide a novel preparation method for a conductive ZnO film which realizes large area and mass productions with low costs and low environment loads. The crystal of zinc oxide (ZnO) is deposited on a substrate by a precipitation method using liquidous solution method under the presence of citric acid. The citric acid adsorbs on the surface of (0001) face of ZnO to suppress anisotropic growth to a c axis direction of the crystal in the precipitation reaction and to form dense crystal film on the surface of the substrate. Then, the organic acid incorporated in the film is photo-decomposed by irradiating UV light to the prepared ZnO crystalline film. As the result, carriers trapped by the organic acid is released to the crystalline film so as to provide an adequate conductivity.

Abstract: The described embodiment relates generally to the field of PCB fabrication. More specifically conductive spheres are used in a bonding sheet to enable inter-layer communication in a multi-layer printed circuit board (PCB). The conductive spheres in the bonding sheet can be used in place of or in conjunction with conventional electroplated vias. This allows the following advantages in multi-layer PCB fabrication: dielectric substrate layers made of varying types of material; PCBs with higher resilience to stress and shock; and PCBs that are more flexible.

Abstract: A carrier with three-dimensional capacitor includes a substrate and a three-dimensional capacitor, wherein the substrate comprises a trace layer having a first terminal and a second terminal. The three-dimensional capacitor is integrally formed as one piece with the trace layer. The three-dimensional capacitor and the trace layer are made of same material. The three-dimensional capacitor comprises a first capacitance portion and a second capacitance portion, the first capacitance portion comprises a first section, a second section and a first passage, the second capacitance portion is formed at the first passage. The second capacitance portion comprises a third section, a fourth section and a second passage communicated with the first passage. The first capacitance portion is located at the second passage, a first end of the first capacitance portion connects to the first terminal, and a third end of the second capacitance portion connects to the second terminal.