Abstract: The invention recites a multi-zone temperature control system operable to control the temperature within a plurality of compartments. The system includes a scroll compressor operable at a speed to compress a flow of fluid and a condenser, operable to cool the flow of fluid. The system also includes a plurality of heat exchangers. Each heat exchanger is associated with one of the plurality of compartments and is operable to maintain the temperature of the compartment within a desired range. A plurality of valves are operable to direct and vary the amount of the flow of fluid from the compressor to the condenser and the plurality of heat exchangers. The valves are configurable to allow each of the heat exchangers to heat or cool their associated compartment. The system also includes a controller operable to control the valves to maintain the temperature of each compartment within its desired range.

Abstract: A technique for connecting expandable tubulars. The technique comprises an expandable connector system that facilitates the connection of tubular components, such as tubulars used in wellbore environments.

Abstract: The present invention provides for a design and method of manufacture for a mesh-type screen to be used in subsurface well completions to prevent the production of sand.

Abstract: In a well production management and storage system having at least one collecting tank and the well pump and a control panel with a timing trigger for activating the well pump and deactivating the well pump for a first predetermined run cycle and a first predetermined rest cycle, the improvement is a controller for adjusting at least one of the first predetermined run cycle and the predetermined rest cycle. This controller detects either changes in rate of rise in liquid in the collecting tank and/or water level in the well when the pump is in a run cycle. When these parameters change, by a predetermined increment, the pump run cycle and/or rest cycle is automatically adjusted.

Abstract: A pumpjack speed control system includes a user interface, a controller and a variable speed drive. The user interface includes a mathematical representation of the pumpjack geometry which permits the conversion of rod speed profiles to crank speed profiles.

Abstract: Methods and systems for estimating multi-phase fluid rates in a subterranean well (10). Stored and measured static (40) and transient (44) well conditions are used to model well conditions for comparison against additional transient data (42) relating to temperature, pressure, and flow. Multi-phase fluid rates are estimated by iteratively comparing well conditions with the model (30) for the well (10). Multi-phase fluid flow estimates may be obtained for the various liquid and gaseous fluids in the well (10) at multiple well locations (24).

Abstract: A method of preparing a solids-pack for use in oilfield completion operations involves staged pumping using two distinct types of carrier fluid with distinct solids loadings during the solids deposition process. The method can be employed in packing of non-vertical oilfield wellbores for formation stabilization, fracture stabilization and/or sand control, particularly around sand exclusion devices. In preferred embodiments the method results in greater uniformity of packing, and also offers the advantage of much more rapid deposition and therefore of completion of the pack phase, reducing overall rig time.

Abstract: A float shoe comprising an upper section having a casing connection at an upper end thereof, and a lower section slidably coupled to the upper section, the lower section comprising a closed lower end and having at least one port disposed therein.

Abstract: An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes at least one cutter, wherein each cutter has a first end and a second end. The first end of each cutter is pivotally coupled to the housing. The underreamer also includes an actuator slidably positioned in the housing, wherein the actuator has a first end and a second end. The underreamer includes an enlarged portion of the actuator proximate the second end of the actuator. A first axial force applied to the actuator is operable to slide the actuator relative to the housing causing the enlarged portion to contact each cutter and extend the second end of each cutter radially outward relative to the housing from a retracted position to a first position. A second axial force applied to the underreamer may be operable to further extend the second end of each cutter radially outward relative to the housing from the first position to a second position.

Abstract: A method of sealing an annulus surrounding a slotted liner in a well includes the steps of generating a magnetic field in the annulus in a region to be sealed; and injecting into the region a sealing fluid including magnetic particles such that the fluid is confined to fill the annulus in the region to be sealed by the interaction of the magnetic particles and the magnetic field.

Abstract: Disclosed herein is a locator system for a cutting device in combination with a production string. Where the production string has at least one detent along its circumference. The invention also comprises a lock formed to engage the detent, a cutting device, and a body on which the lock is attached. The body is connected to the cutting device such that when the lock is engaged to the detent, the cutting device is operatively connected to the detent and the cutting device is positioned at a location to accurately sever the production string at a desired depth. An alternative embodiment of the detent is a nipple profile and the production string comprises a series of tubing members connected end to end. The tubing members can be a completion tool, tubing, or a combination of both. Also disclosed is a method of using the locator system.

Abstract: The current invention provides apparatus and methods for the downhole release of well treatment chemicals. In one aspect, the invention provides a method for the passive continuous release of well treatment chemicals. Another embodiment of the invention provides a method for selectively releasing well treatment chemicals. Further, the present invention provides a method for inhibiting scale formation in a production pipe string.

Abstract: A method and apparatus for fluid treatment of a selected interval of a well and then cleaning the selected interval and the apparatus of treatment residue. An Out/In straddle tool is run into the well to treatment depth on fluid supplying tubing and has upper and lower packers that establish sealing with the casing and define an annular interval between the packers and between the tool and casing. Fluid, such as fracturing fluid, is pumped through the tubing to the tool and is diverted through an Out port of the tool into an upper portion of the annular interval. Fluid then flows from a lower portion of the annular interval through an In port below the Out port and at low flow rate is dumped into the casing through a pressure responsive dump valve. The Out port and In port are located to accomplish cleaning of residue from the packers.

Abstract: The present invention discloses a method of re-manufacturing a composite riser section having a damaged original metal liner. An expandable replacement liner is inserted into the bore of the composite riser section and is positioned to cover the liner. An annular recess may be formed circumferentially into the damaged portion of the metal liner to accommodate the replacement liner. The replacement liner is radially expanded within the composite riser section and a seal is created to prevent fluid inside the composite riser from flowing around the replacement liner, through the damaged liner and to the outside of the composite riser.

Abstract: The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper section of a wellbore from a lower section. Thereafter, a pressure differential above and below the closed valve is measured by downhole instrumentation to facilitate the opening of the valve. In another aspect, the instrumentation in the DDV includes sensors placed above and below a flapper portion of the valve. The pressure differential is communicated to the surface of the well for use in determining what amount of pressurization is needed in the upper portion to safely and effectively open the valve. Additionally, instrumentation associated with the DDV can include pressure, temperature, and proximity sensors to facilitate the use of not only the DDV but also telemetry tools.

Abstract: A flow responsive dump valve mechanism for a straddle packer tool and has a valve controlled flow passage from which underflushed fluid, typically well treatment slurry, in a conveyance and fluid supplying tubing string can be dumped into a well casing. The dump valve mechanism incorporates a ratcheting power piston, an indexing mechanism and high and low load energy storage systems to accomplish open, closed and intermediate dump valve positions. The intermediate position increases the functionality of the tool by preventing accidental closure either due to the free fall of fluid through the coiled tubing or during flushing of the tool and permits the flow rate to be increased for thorough cleaning of the straddle tool and coiled tubing. For energy storage, a light compression spring provides power to cycle the indexing mechanism. Heavier load disc springs (Bellville Washers) are used to provide power for the ratcheting power piston to open the valve.

Abstract: The present invention generally relates to a connector for coiled tubing that resists torque developed by rotating downhole equipment. The connector couples to an inside diameter of the coiled tubing and can use a torque ring that rotationally locks the connector to the coiled tubing. Additionally, the connector can have a slot on an outside diameter thereof adapted to receive a weld bead on the inside diameter of the coiled tubing in order to rotationally lock the connector to the coiled tubing.

Abstract: A self-metering, automatic (i.e. pressure regulating) industrial-scale fire fighting nozzle, with or without self-eduction, for self-metering a concentrate in accordance with varying liquid flow through the nozzle occasioned by the pressure regulating, with additional features of having a “ratio selectable” means for self-metering for different selected additive concentrations or mixing ratios and of having a mechanical flowmeter.

Abstract: An anti-fire apparatus for vehicle includes a control device coupled to a fire extinguishing device for actuating the fire extinguishing device, and a detector device coupled to the control device for operating the control device to actuate the fire extinguishing device. A device may include one or more batteries for energizing the detector device. A manual switch may be used to actuate the fire extinguishing device manually. The detector device includes a detector for detecting a vehicle collision, a fuel level and/or a fuel pressure and/or an engine temperature.

Abstract: A hand power tool has a housing, and a pistol-shaped handle which is supported on the housing displaceably substantially in a direction of a longitudinal axis of the hand power tool.

Abstract: A tool drive system for transferring rotational power from a rotational tool, such as a drill or ratchet, to at least one input drive shaft which then transfers the power to at least one output drive shaft. The angle of at least one input drive shaft being adjustable relative to at least one output shaft. The tool drive system comprises a round housing with an angle adjuster attached to the input shaft that assists in adjusting and locking the angle of the input shaft relative to the output shaft in an almost circular span. The input and output shafts may be positioned in a user-selected gear ratio from the input to output shafts or vice versa.

Abstract: The invention relates to a cover (200,300,400,500,600) for an electronic device (100), which electronic device comprises a substrate (110) and at least two electronic components (120,130), one of which generates an electromagnetic field around itself, where the cover has a first main surface (210) that faces towards the electronic device, comprises a material that conducts current, and is designed and arranged in such a way in relation to the electronic components that a cooling medium can pass from the first (120) to the second (130) electronic component. The invention is characterized in that, by virtue of its shape and its material content, the cover has been given an increased ability to absorb at least part of the electromagnetic field that is generated by at least one of the electronic components.

Abstract: A polyethylene composite is manufactured by passing an inner core of fabric mesh sandwiched between two sheets of polyethylene material through a conventional set of high-pressure rollers at room temperature. The pressure exerted by the rollers on the polyethylene material causes its fluidification, so that each polyethylene layer permeates through the open mesh of the core material, bonds to the other layer and incorporates the core fibers to form a laminate composite. The thickness of the polyethylene sheets in relation to the gap and speed of the rollers has to be judiciously selected so that the pressure applied to the material is sufficient to fluidize the polyethylene at ambient temperature. Because no heat is applied to the system, the laminate composite is rapidly cooled as it passes through the rollers and requires no additional forming or processing.

Abstract: A two-piece RF interference shield and method of manufacturing the same that is cost efficient and easily adapted for use with existing electrical devices. The RF shield includes a bottom portion mounted to the circuit board and a top portion which fits onto the bottom portion. The RF electrical interference shield can be mounted to circuit boards (e.g., by soldering) to prevent electrical components from causing RF interference. The RF shield of the present invention also allows for easy removal of the top of the RF shield so as to provide access to the interior for rework or repair of the electrical components covered by the shield, without having to unsolder the bottom portion of the shield. The two-piece shield for shielding an electrical component comprises a top portion and bottom portion that are fitted together so as to enclose the electrical components to be shielded. The top and bottom portions snap together, e.g.

Abstract: The invention may be embodied in an electromagnetic filter for use with a feedthrough conductor. An inductor having a metallized surface is disposed about the conductor, and a capacitor is joined to the inductor. One set of capacitor plates are electrically connected to a first conductive contact to provide a connection to the metallized surface. Another set of capacitor plates are electrically connected to a second conductive contact to provide a connection to the feedthrough conductor. A method of providing such a filter is also disclosed.

Abstract: There is described a portable electronic device of the wristwatch type including, in particular, a first electric module (32), arranged in a case (20) of the device and a second electric module (13, 22) housed in a strand (1) of the wristband and including means (11) for and electric connection with the first electric module. The case (20) of the device has two main parts, a bottom portion (24) and a top portion (23). The present invention provides means (8, 27) for introducing the connecting means (11) inside the case (20), and means (36, 44) for establishing the electrical connection between said connecting means (11) and bump contacts (33) of the first electric module (32), via compression, when the two portions (23, 24) of the case (20) are mounted.

Abstract: A support hole, screw holes, and eleven orientating holes are formed in a plate. The orientating holes are each positioned asymmetric to any other thereof about a center of the plate.

Abstract: An expansion ring for expanding the perimeter of a splice case end plate. The ring comprises two face plates and a rim connected to and separating the face plates, with an aperture through the face plates. The ring fits around the perimeter of the end plate, forming an air tight, environmental seal. Once in place, a splice case housing can be installed over the expanded end plate. The present invention also provides a method of expanding the perimeter of an end plate, a method of installing a larger splice case housing over a smaller end plate, and a splice case, each based on the end plate expansion ring, and a method for repairing a damaged cable line where the repair is interrupted in time.

Abstract: A sleeve assembly for receiving and protecting elongated items within a duct is disclosed. The sleeve assembly includes a plurality of separate and independent sleeves, each sleeve being woven from warp and weft filamentary members that form sidewalls surrounding and defining a central space. Pull cords are located within each central space for drawing the elongated items through the sleeves once positioned within a duct. The assembly includes means for drawing the sleeves simultaneously through the duct, such means including an outer jacket surrounding the sleeves, the jacket having an inwardly facing surface that exerts a compressive force on the sleeves causing them to be drawn through the duct together with the jacket. The means may also include a loop which attaches the sleeved together at one end. The sleeves may be biased into an open or a substantially flattened configuration.

Abstract: The method of manufacturing a composite insulator constituted by a rod surrounded by an insulating coating and provided at its two ends with two metal end fittings respectively consists in the following steps:

Abstract: A warpage-preventive circuit board and method for fabricating the same is provided, wherein a plurality of conductive traces are formed on a surface of an electrically-insulative core layer, and a plurality of discontinuous dummy circuit regions are disposed on the surface of the electrically-insulative core layer at area free of the conductive traces, with adjacent dummy circuit regions being spaced apart by at least a chink. During a high-temperature fabrication process, the dummy circuit regions help reduce thermal stress and the chinks absorb thermal expansion of the dummy circuit regions, to thereby prevent warpage of the circuit board and cracks of a chip mounted on the circuit board, such that yield and reliability of fabricated semiconductor devices can be improved.

Abstract: A fine pad pitch organic circuit board with plating solder and a method for fabricating the circuit board with plating solder are provided. The circuit board is formed with a plurality of densely arranged contact pads on at least a surface thereof in the absence of solder mask being applied over the surface. After deposition of a conductive seed layer on the contact pads, a resist layer is applied over the surface of the circuit board, and formed with a plurality of openings for exposing the seed layer corresponding in position to the contact pads. Then, a solder material is deposited in the openings by a plating method. Finally, the resist layer and the seed layer underneath the resist layer are removed, making the circuit board readily subject to subsequent fabrication processes for forming flip-chip joints or board-to-board joints.

Abstract: A high impedance surface and a method of making same. The surface includes a molded structure having a repeating pattern of holes therein and a repeating pattern of sidewall surfaces, the holes penetrating the structure between first and second major surfaces thereof and the sidewall surfaces joining the first major surface. A metal layer is put on said molded structure, the metal layer being in the holes, covering at least a portion of the second major surface, covering the sidewalls and portions of the first major surface to interconnect the sidewalls with other sidewalls via the metal layer on the second major surface and in the holes.

Abstract: A printed circuit assembly comprises a printed circuit board and a micro-electro-mechanical system on the printed circuit board. At least one motion damping member is positioned between the printed circuit board and the micro-electro-mechanical system.

Abstract: Placing a flow modifier on a package substrate to create two flow fronts on a molded matrix array package. A flow modifier may be laid on a package substrate to a height that blocks off the bottom of other substrates (e.g., dice) coupled to the package substrate. By separating the top flow front and the bottom flow front, this process prevents the top flow front from wrapping around the sides of the substrates and trapping air below each substrate and in front of the bottom flow front.

Abstract: A first signal routing layer may be formed on a first surface of a printed circuit board (PCB). An array of interconnections may formed on the first surface of the PCB, the array of interconnections comprising at least one padless via formed within the PCB, the at least one padless via extending from the first signal routing layer to at least one conductive plane and/or a second signal routing layer. The at least one padless via may be in electrical contact with the at least one conductive plane and/or a conductive trace on the second signal routing layer. A component may be attached to the PCB, with a solder interconnection between the at least one padless via and a contact pad on a bottom surface of the component. The component may be, for example, an electronic component such as a ball grid array (BGA) component or a leadless surface mount component.

Abstract: A z-axis package for an electronic device and a method for making the z-axis packaging for the electronic device. The z-axis package is inexpensive to manufacture and can be assembled with automated surface mount equipment by the end user.

Abstract: According to one embodiment, a printed circuit board (PCB) is disclosed. The PCB includes a first functional unit block (FUB) and differential traces coupled to the first FUB. The first FUB transmits high-speed serial data. The differential traces carry the high-speed serial data from the first FUB. In addition, the differential traces crossover on the same layer of the PCB while maintaining a constant impedance.

Abstract: A system for controlling drilling mud density at a location either at the seabed (or just above the seabed) or alternatively below the seabed of wells in offshore and land-based drilling applications is disclosed. The present invention combines a base fluid of lesser/greater density than the drilling fluid required at the drill bit to drill the well to produce a combination return mud in the riser. By combining the appropriate quantities of drilling mud with a light fluid, a riser mud density at or near the density of seawater may be achieved to facilitate transporting the return mud to the surface. Alternatively, by injecting the appropriate quantities of heavy fluid into a light return mud, the column of return mud may be sufficiently weighted to protect the wellhead. At the surface, the combination return mud is passed through a treatment system to cleanse the mud of drill cuttings and to separate the drilling fluid from the base fluid.

Abstract: A system for controlling drilling mud density at a location either at the seabed (or just above the seabed) or alternatively below the seabed of wells in offshore and land-based drilling applications is disclosed. The present invention combines a base fluid of lesser/greater density than the drilling fluid required at the drill bit to drill the well to produce a combination return mud in the riser. By combining the appropriate quantities of drilling mud with a light fluid, a riser mud density at or near the density of seawater may be achieved to facilitate transporting the return mud to the surface. Alternatively, by injecting the appropriate quantities of heavy fluid into a light return mud, the column of return mud may be sufficiently weighted to protect the wellhead. At the surface, the combination return mud is passed through a treatment system to cleanse the mud of drill cuttings and to separate the drilling fluid from the base fluid.

Abstract: An ice auger includes a drive member, an upright bar, and a saw barrel. The drive member is coupled with a top end of the bar, and a bottom of the bar is coupled with a top center of the saw barrel, which is circular mug-shaped with a downward opening. The saw barrel has pores at its top side, saw blades on its bottom fringe, and a chipping-ejecting blade upward spirally extended from an outer sharp edge of each said saw blade along its outer periphery. Whereby, the ice auger of a preferably simplified structure is provided.

Abstract: A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inner barrel assembly disposed therein. The inner barrel assembly may comprise multiple, sponge-lined inner tube sections and may also include a near-bit swivel assembly. The sponge core barrel may include a piston assembly configured to be released by contact with a core sample without imparting high compressive forces to the core. The sponge core barrel may also include a pressure compensation mechanism and, optionally, a thermal compensation mechanism cooperatively configured to maintain the pressure of pre-saturation fluid. The sponge core barrel may also include a valve assembly enabling the make-up and pre-saturation of multiple, sections of inner tube to form a single, continuous chamber.

Abstract: The invention relates to a method and a device for the drilling, in particular the percussive or percussive rotary drilling of a hole (7) in earth or rock and for securing an anchorage in said hole. According to the invention, a bore hole (7) is created by a drill bit (1) mounted on a drill pipe (5) and a sliding sleeve (4) that surrounds the drill pipe (5) at a distance is simultaneously introduced. The invention is characterised in that a sliding sleeve (4) configured with a longitudinal slit (8) is introduced at least partially and rests substantially against the bore hole (7) during the drilling, whereby a reliable anchorage can be achieved with a simple construction by means of the sliding sleeve (4) with a longitudinal slit.

Abstract: Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground boring tool. In one aspect, an improvement is provided forming part of an arrangement for tracking the position and/or guiding the boring tool using an electromagnetic locating signal which is transmitted from the boring tool as the boring tool moves through the ground. At least two detectors are located at fixed positions within the region, each being operable in a transmit mode and in a receive mode such that each one of the detectors in the transmit mode is able to transmit a relative locating signal to the other detector for use in determining the relative position of one detector in relation to the other and such that both detectors receive the electromagnetic locating signal in the receive mode for use in determining the position of the boring tool within the region.

Abstract: A steering tool for extended-reach directional drilling in three dimensions comprises a mud pulse telemetry section, a rotary section, and a flex section assembled as an integrated system in series along the length of the tool. The flex section comprises a flexible drive shaft and a deflection actuator for applying hydraulic pressure along the length of the shaft for bending the shaft when making inclination angle adjustments during steering. The rotary section comprises a rotator housing coupled to the deflection housing for rotating the deflection housing for making azimuth angle adjustments during steering. The onboard mud pulse telemetry section receives inclination and azimuth angle steering commands together with actual inclination and azimuth angle feedback signals during steering for use in controlling operation of the flex section and rotary section for steering the tool along a desired course.

Abstract: The present invention generally relates to an apparatus and method for sealing a tubular string. In one aspect, a drilling system is provided. The drilling system includes a rotating control head for sealing the tubular string while permitting axial movement of the string relative to the rotating control head. The drilling system also includes an actuating fluid for actuating the rotating control head and maintaining a pressure differential between a fluid pressure in the rotating control head and a wellbore pressure. Additionally, the drilling system includes a cooling medium for passing through the rotating control head. In another aspect, a rotating control head is provided. In yet another aspect, a method for sealing a tubular in a rotating control head is provided.

Abstract: A drilling head (1) is disclosed, in particular for introduction into pipelines, with a rear connector piece (2) and a forward cutting body (3) of the size of the diameter, comprising cutting ribs (4), extending in the advancing direction (V), which have a convex arch and have a cutting edge (5) on both sides of the radial end thereof in the direction of the circumference. Conventional drilling heads can be applied only with difficulty in curved pipelines and have a tendency to damage the inner wall of the pipeline. The disclosed drilling head (1) has a cutting body (3) with a conical cutting head tip (7), surrounded by the back-cut tips (6) of the cutting ribs (4) which lie set back along a longitudinal axis (Y).

Abstract: Compacts are oriented in certain places on roller cones of an earth boring bit to increase the number of compacts in certain rows. The compacts that are pressed into holes in rows on the cones. The compacts are of tungsten carbide and have a cutting end axis and a barrel axis. The barrel axis intersects the cutting end axis at an obtuse angle. In one of the cones, the barrel axis of at least some of the compacts is rotated to have less inclination than the barrel axis of the compact nearest to it. The nearest compact may be in the same row or an adjacent row. Also, at least some of the compacts may be asymmetrical, with a cutting end axis that diverges from a barrel axis.

Abstract: A drill bit that includes a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on the at least one roller cone is disclosed. At least one of the plurality of cutting elements includes a first area defining a trailing edge, and a second area proximate the first area defining a main wear surface.. Further, an insert for a drill bit that includes a contact portion adapted to contact an earth formation, the contact portion including a first area defining a relieved trailing edge, and a second area defining a main wear surface, wherein a surface of the second area is a curved surface having a radius of curvature substantially equal to a radius of a borehole is also disclosed.

Abstract: A bore hole opener for enlarging a bore hole includes a longitudinal body, a duct for drilling fluid, formed longitudinally in the body, having a fluid passage cross-section of inside radius i, and at least two hole-opening arms, borne by the body, which have an active part equipped with cutting mechanisms, which are arranged therein in such a way that they can slide between a position of rest in the body and an active position partially out of the body, and which are guided and supported for this purpose in the body over a distance g and which, in the active position, project from the body by a length o, in which the values of i, g and o are chosen to simultaneously satisfy the conditions i+g+o S;