Abstract: A system and methodology are provided for improving the triggering (firing) of perforating guns, such as perforating guns deployed downhole via tubing. According to an embodiment, a methodology is provided for dependably communicating with an electronic firing head. The electronic firing head receives signals via wireless telemetry, such as either electromagnetic or acoustical telemetry. The methodology prevents surface or off depth detonation of the perforating guns by utilizing a fire command protocol.

Abstract: An assembly, including a perforating gun to perforate a subterranean wellbore, and a setting tool to install a plug within the wellbore. In addition, the assembly includes an adapter configured to connect to each of the perforating gun and the setting tool. The adapter includes an outer housing including a single-piece, integrated body that includes a first end configured to directly connect to the perforating gun, a second end configured to directly connect to the setting tool, and an internal passage. In addition, the adapter includes an electrical circuit disposed within the internal passage that is configured to route an electrical signal to cause the setting tool to install a plug within the wellbore.

Abstract: The hybrid solar thermal enhanced oil recovery system with an oxy-fuel combustor is an enhanced oil recovery system utilizing solar thermal enhanced oil recovery during the daytime and utilizing an oxy-fuel combustor in the nighttime. A solar heater is used for the solar thermal enhanced oil recovery, generating steam injected into an oil field having an oil well for enhanced oil recovery. During the nighttime, when solar heating is not available, an oxy-fuel combustor produces carbon dioxide and nitrogen. The carbon dioxide is injected into the oil field for miscible enhanced oil recovery and the nitrogen is separately injected into the oil field for immiscible enhanced oil recovery.

Abstract: A hydrocarbon production process comprising operating a first early stage hydrocarbon production process within a first communication domain with a first well pair, and operating a second early stage hydrocarbon production process within a second communication domain with a second well pair, such that an intermediate reservoir region including stranded bitumen becomes disposed between the first and second communication domains; wherein the first early stage hydrocarbon production process includes injecting a first production-initiating fluid via a first injection well of the first well pair into a first communication domain such that hydrocarbon material is mobilized and conducted to a first production well of the first well pair, and producing the received hydrocarbon material via the first production well; and wherein the second early stage hydrocarbon production process includes injecting a second production-initiating fluid via a second injection well of the second well pair into a second communication do

Abstract: A propellant tool for use in a hydrocarbon bearing formation. The tool includes a tubular body having a connector on each end for connection with other tubular members within a tubular string. A coded marker is positioned on the tubular body and a propellant chamber is positioned on an outside surface of the tubular body. A propellant ignition mechanism positioned on the tubular body for igniting the propellant in the propellant chamber.

Abstract: The present invention relates to a system for treatment of a mixture from a production well, said mixture comprising a first aqueous liquid and a second oily liquid, the treatment system comprising an extraction tube installed in said well and capable of conducting said mixture from the bottom of said well, a separator capable of separating the first liquid from the second liquid in said mixture, a first end of said tube being connected to the separator, a first injection means capable of injecting a first product into said tube, said first product being capable of improving the flocculation and coalescence of the second fluid in the mixture. Any diameter of the tube between said first end of the tube and a second end of said tube lies in an interval of 10% around a predetermined diameter.

Abstract: A peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.

Abstract: A system for electromagnetic wellbore surface ranging to determine the location of a second wellbore relative to a first wellbore utilizing i) a current source configured to directly inject electrical current into a conductive member disposed in each wellbore and ii) an electromagnetic senor positioned on the surface of a formation, the sensor configured to measure electromagnetic fields at the formation surface emanating from the conductive member within each wellbore.

Abstract: This invention provides for an apparatus that controls a liquid level down-hole of a hydrocarbon producing well by physically monitoring the liquid level down-hole having a down-hole liquid level measurer and a signal device connected to the liquid level measurer that causes a pump to adjust its current liquid output based on the liquid level down-hole as measured by the down-hole liquid level measurer.

Abstract: A method of determining changing well characteristics at downhole locations based on changes in detected temperatures by permanently installed downhole sensors. The methods and tools utilized involve the establishing of baseline temperature profiles, for example, at the outset of well operations. The installed sensors may be powered are rechecked on a periodic or continuous basis for substantial deviations to the temperature profiles which are indicative of particular well condition changes such as the depositing of asphaltene or decreases in fluid velocity.

Abstract: A technique for determination of out of zone injection. The technique may include taking temperature readings of the well at locations adjacent the cap rock during injection of injection fluid into the injection well at temperatures that are below that of the cap rock. Analysis of the rate of change in temperatures adjacent the cap rock may be used to monitoring effects of the injection application including deciphering cap rock breach of injection fluid when the rate of change substantial enough.

Abstract: A system and method are provided for operating a dual telemetry measurement while drilling (MWD) system. The method includes sending a downlink command to a downhole system to switch between a first telemetry mode and a second telemetry mode, one of the first and second telemetry modes comprising mud pulse telemetry, and the other of the first and second telemetry modes comprising electromagnetic (EM) telemetry.

Abstract: An illustrative downhole sensing system includes a phase-squeezer assembly, an interferometer with a downhole sensor on the sensing path, and a receiver. The phase squeezer assembly provides a phase-squeezed laser beam, preferably with a squeeze parameter greater than 2. Certain embodiments include a pulse generator that gates the phase-squeezed laser beam to form a sequence of phase-squeezed laser pulses, and may further include a compensator that converts the sequence of pulses into a sequence of double pulses with a slight frequency shift between the pulses in each pair. The interferometer conveys a reference portion of the phase-squeezed laser beam along a reference path and a sensing portion of the phase-squeezed laser beam along a sensing path. A downhole sensor along the sensing path provides the sensing portion of the phase-squeezed laser beam with a measurement-parameter dependent phase shift relative to the reference portion of the phase-squeezed laser beam, which is measured by the receiver.

Abstract: A well tool can include an outer housing and a vibratory transmitter disposed in the outer housing. The vibratory transmitter transmits a vibratory signal to an optical line disposed in the outer housing. A well system can include an optical line extending in a wellbore, and at least one well tool secured to the optical line and including a vibratory transmitter which transmits a vibratory signal to the optical line. The optical line conveys the well tool into the wellbore. A method of telemetering data from a well tool to an optical line can include securing the well tool to the optical line without optically connecting the well tool to the optical line, and conveying the well tool in a wellbore on the optical line.

Abstract: Systems and methods for transmitting power and information using acoustic energy produced by transducers are provided. The systems have particular application for powering and communication with electronics through drilling and pipe systems. Pairs of acoustic wedges holding transducers are provided for sending energy and information through a substrate which may be a steel pipe. Each wedge has an angled transducer which can be used to produce shear waves. The waves propagate through the substrate and are received by a second acoustic wedge. The shear waves, on reaching the second acoustic wedge, are converted back into electrical signals by a second transducer. Tangential shear waves, high, shallow wave transmission angles, and direct steel-steel bonding between wedges and substrates may be used.

Abstract: An example method includes providing fluid communication between an internal bore of a drill string and an annulus between the drill string and a borehole through a fluid channel in a side of a collar coupled to the drill string. Fluid may be circulated through the internal bore of the drill string. A fluid telemetry signal may be generated by selectively generating a vortex within the fluid channel. Providing fluid communication between the internal bore and the annulus through the fluid channel may include providing fluid communication between the internal bore and a vortex basin at least partially defining the fluid channel, through at least one of a first fluid flow path and a second fluid flow path between the vortex basin and the internal bore; and providing fluid communication between the vortex basin and the annulus through a fluid outlet of the vortex basin.

Abstract: Estimating in-situ stress of an interval having drilling response data is described. Estimating involves obtaining drilling response data of a data rich interval with available data. Estimating relative rock strength as a composite value that includes in-situ stress and rock strength. Estimating a Poisson's ratio from the relative rock strength. Generating a stress model that includes uniaxial strain model using the Poisson's ratio. Verifying the stress model with the available data. Applying the stress models in a non-data rich interval.

Abstract: A performance testing device for acid fracturing fluid includes: two semiterete rock core holders, the flat face sides of the two semiterete rock core holders being arranged opposite to each other; the two semicircle sides of the two semiterete rock core holders being provided with a rotation member which is opened with a first groove; the two semiterete rock core holders being able to rotate about a first rotation axis formed corporately by the two rotation members; a pressure applying shell having a recessed portion that matches with the curved face side, the recessed portion being able to cooperate with the curved face side, the pressure applying shell being able to apply a pressure to the two rock core holders to bring the two flat face sides thereof together.

Abstract: A cutter head for a mining machine includes a drum defining a drum axis with a drum plane extending perpendicular to the drum axis. The cutter head includes a plurality of cutting bit assemblies secured to an outer surface of the drum proximate a first end. Each cutting bit assembly includes a block and a bit. The bit includes a tip configured to engage a mine surface. The bit defines a bit axis, and the bit axis defines a first lean angle relative to the drum plane. The plurality of cutting bit assemblies includes a first series having four first bits, a second series having two second bits, a third series having two third bits, and a fourth series having two fourth bits. Each of the first bits includes a first tip and defines a first bit axis oriented at a first lean angle relative to the drum plane. The first lean angle is between about 60 degrees and about 75 degrees.

Abstract: The invention relates to an earth working machine and to a method for wear-optimized operation of such an earth working machine. Provision is made in this context that machine parameters with which the earth working machine is operated are adapted, in consideration of material properties of the substrate to be worked, in such a way that favorable wear behavior exists for the earth working tools being used.

Abstract: A reciprocating impact slack-drop/rotating/raking multifunctional power shaft, comprising a power shaft section (5), eccentric shaft sections (6), a power take-off (2) comprising a lubricated power take-off (7) and/or a raking power take-off (8), and a power source component (4); the sections (6) comprising bearing separate snap-fitted eccentric shaft sections (6) or bearing integrated sleeved eccentric shaft sections (3); the sections (6) comprising connecting rods (1) comprising separate snap-fitted connecting rods and/or integrated sleeved connecting rods; the power take-off (2) being arranged between the sections (5) and (6), or between the section (6) and the section (6), or at one end of the section (6), or at one end of the section (5); the component (4) driving the section (5) to rotate; the section (6) driving the rod (1) in reciprocating motion; and the section (5) driving the power take-off (2) to operate in rotation.

Abstract: A grouting tool includes a body element having a body element leading end and a body element trailing end. A collet member having a collet member trailing end in fluid communication with the body element leading end, and a collet member leading end having a hollow passage adapted to receive a grout tube. A grout injection port is secured to the body element trailing end. A portion of the collet member is radially compressible to provide a clamping force adapted to secure the grout tube to the grouting tool.

Abstract: An engine comprises a compression portion and a combustion portion. The compression portion comprises twin-screw rotors, male engaged with female. The combustion portion comprises twin-screw rotors, male engaged with female. The male compression rotor and the male combustion rotor share a same longitudinal axis, and the female compression rotor and the female combustion rotor share a same longitudinal axis. A combustion plate is disposed between the compression portion and the combustion portion, and prevents flow of gas from the compression portion to the combustion portion, except through a small orifice centrally located on the combustion plate. A valve is affixed to the male rotors adjacent to the combustion plate, covering the lobes of the male rotors and extending beyond the lobes of the male rotors. The valve controls the flow of gas from the compression portion to the combustion portion.

Abstract: The invention relates to a rotor assembly having a sealing system for sealing at apexes or faces of the rotor. In a disclosed arrangement the apex seal or the face seal comprises a compliant member that is configured such that the shape or orientation of the compliant member can change in use in response to a change in the speed of rotation of the rotor, a change in the pressurisation across the compliant member, or a change in clearance between the sealing surface and a mounting element to which the compliant member is mounted, to deflect towards or away from the sealing surface.

Abstract: Disclosed are rotary positive displacement machines capable of acting as an engine and as a pump, serving to improve the profile of working members of helical rotary engines, compressors and pumps. An actuator is comprised of a pair of rotors having engaged helical teeth. The rotors are disposed in chambers which encircle both. The working areas of the profiles of the teeth in an engaged pair are delineated in cross-section by portions of a cycloidal curve for one rotor and by arcs of circumferences which are eccentrically offset from the axis of the second rotor. Such a profile of teeth produces an eccentrically cycloidal engagement capable to work efficiently at very high rotor rotation speeds. The presence of power contact and low sensitivity to gearwheel skews allow for working with nonhomogeneous media, including those containing solid inclusions.

Abstract: The present application provides a method of repairing a turbine blade. The method may include the steps of removing an existing squealer tip from the turbine blade in whole or in part, positioning the turbine blade in an additive manufacturing system, and building up an extension of a replacement squealer tip on the turbine blade in whole or in part.

Abstract: An imbalance correction position of a turbine wheel head is irradiated with a laser beam so that an outer peripheral portion of the turbine wheel head is left, and a groove provided by the laser irradiation is provided so that a depth of the groove is shallower toward a side closer to an outer periphery of the turbine wheel head. This makes it possible to secure a strength of a base part of an outer peripheral portion (an outer wall) of the groove, thereby making it possible to restrain deformation of the outer peripheral portion of the groove due to a centrifugal force acting by rotation of the turbine wheel head.

Abstract: A single-body balance correction range in which a weight has been removed by single-body balance correction performed on a turbine wheel (a rotor) as a single body is calculated, an assembly balance correction range is calculated in an assembled state of the turbine wheel, and assembly balance correction is performed in a case where the single-body balance correction range and the assembly balance correction range overlap each other, such that an outermost diameter of an arc-shaped assembly-balance correction groove provided by removal of an inner part of a turbine wheel head is smaller than a remaining height a of the single-body balance correction range. By such a correction process, it is possible to perform weight removal for assembly balance correction by excluding a range in which the weight has been removed by the single-body balance correction, thereby making it possible to restrain an indicated value of a weight removal amount from deviating from an actual weight removal amount.

Abstract: Methods are provided for generating an airfoil including an aerodynamically-shaped fillet. 2D fillet curve offset values are defined by obtaining a 2D airfoil image having airfoil surface line and transition region interconnecting airfoil surface line to flowpath surface line with 2D fillet curve. Flowpath offset lines are generated on image at predetermined flowpath offset values and, in the transition region, graphically represent a flowpath offset surface. Intersection point between 2D fillet curve and each flowpath offset line is determined Distance between airfoil surface line and each intersection point generates airfoil offset values. Airfoil and flowpath offset surfaces according to airfoil offset values and flowpath offset values respectively and 3D fillet streamline curves are generated on computer model to define the aerodynamically-shaped fillet. Each 3D fillet streamline curve is an intersection between the airfoil and flowpath offset surfaces.

Abstract: A rotorcraft rotor blade assembly includes a stub spar extending less than a full span of the rotor blade assembly. An upper skin portion extends substantially the full span of the rotor blade assembly. A lower skin portion extends substantially the full span of the rotor blade assembly. The stub spar is positioned between the upper skin portion and the lower skin portion.

Abstract: Airfoil outer wall thickness of a gas turbine engine blade is increased in the zone that is proximate the trailing edge and blade hub by forty to sixty percent (40-60%) greater than comparable greatest wall thickness anywhere else along the trailing edge from outboard that zone all the way to the blade tip. The increased thickness zone includes a transition zone that bridges the respective airfoil outer wall thicknesses proximate the hub and tip of the blade. Some embodiments also incorporate pedestals with compound curve fillets in the increased wall thickness zone. The increased thickness zone reduces blade cracking propensity and enhances service life.

Abstract: An orifice element is adapted to be inserted into a recess formed at an external opening of a channel in a turbine stator or rotor vane, the channel being adapted for leading a cooling fluid through the vane. The orifice element has a mounting part formed of a solid material, and an opening part leaving an opening between a first side of the orifice element and a second side of the orifice element, the second side being opposite to the first side.

Abstract: A compressor blade for a gas turbine is provided. The compressor blade has a blade substrate that consists of a metal alloy and has an aluminum diffusion zone on a surface of the blade substrate. In addition, the compressor blade has a hard material coating provided on the surface of the blade substrate. A compressor that has a compressor blade and a method of producing such a compressor blade is also provided.

Abstract: A composite vane includes a composite vane body that is formed from a composite material of a thermosetting resin or a thermoplastic resin and reinforced fibers, which is obtained by molding, and a metal sheath that is bonded to a leading edge section including a leading edge of the composite vane body and a vane surface in a vicinity of the leading edge via a film adhesive formed by impregnating a mesh with a hard adhesive to cover the leading edge section, wherein an underfill section that is formed in a step of removing excessive thicknesses parts remaining on the leading edge after the molding and does not need leading edge round finish is placed on the leading edge of the leading edge section in the composite vane body. It is possible to realize reduction of manufacturing time and manufacturing cost.

Abstract: A stator vane is comprised of: an airfoil section elongated in a radial direction relative to an axis; an outer band section continuous to an outer end of the airfoil section and bent in a circumferential direction relative to the axis; a first hook section continuous to a leading end in the axial direction of the outer band section and bent outward in the radial direction; a second hook section continuous to a trailing end in the axial direction of the outer band section and bent outward in the radial direction; an inner band section continuous to an inner end of the airfoil section and bent in the circumferential direction; a flange section continuous to an end in the axial direction of the inner band section and bent inward in the radial direction; and a reinforcement fiber fabric continuous throughout these sections and unitized with a ceramic.

Abstract: A seal for sealing a space defined by first and second components, the seal including at least one first seal and at least one second seal wherein at least a portion of the at least one first seal is disposed in the at least one second seal.

Abstract: A toggle seal, for use with a rim seal, including: a seal body, a proximal end and a distal end, a first end seal extending in a first axial direction from the proximal end of the seal body, a second end seal extending in the first axial direction from the distal end of the seal body, a first protruding portion extending in a second axial direction from the proximal end, opposite of the first end seal, and a second protruding portion extending in the second axial direction from the distal end, opposite of the second end seal, wherein the first end seal is configured to operatively engage the wheel disk and the second end seal is configured to operatively engage the at least one blade.

Abstract: An assembly is provided for rotational equipment such as a gas turbine engine for an aircraft propulsion system. This assembly includes a stator, a rotor and a seal assembly. The rotor extends axially along a centerline. The rotor includes a linkage, a first rotor disk, and a second rotor disk. The linkage extends axially from the first rotor disk to the second rotor disk. The linkage is removably attached to the second rotor disk. The seal assembly is configured for sealing a gap radially between the stator and the linkage. The seal assembly includes a hydrostatic non-contact seal.

Abstract: A turbo-machine having a plurality of component slots accessible from the outside, wherein a thermal transfer line is supplied to at least one section of a component slot such that, upon escape of leakage gas out of the section of the component slot, the leakage gas thermally interacts with the thermal transfer line, wherein the thermal transfer line has a plurality of temperature sensors at different locations on the thermal transfer line and the temperature sensors are designed to detect temperature values on the thermal transfer line at the different locations.

Abstract: A method for monitoring a combustor comprising: measuring several times a distance between a first wall of the combustor and either a second wall of the combustor or a sensor of the combustor by the sensor, and concluding from a variation in the distances a formation of deposit on the first and/or second wall and/or sensor, and/or a temperature change within the combustor, and/or a pressure change within the combustor.

Abstract: A pressure relief door (PRD) assembly is provided and includes a PRD frame, a PRD hinge-coupled to the PRD frame, a latch element configured to normally remain in a latched condition to maintain the PRD in a closed condition relative to the PRD frame and to assume an unlatched condition to permit the PRD to assume an open condition relative to the PRD frame in accordance with an occurrence of a burst duct event within the PRD frame and a retention element. The retention element is configured to automatically activate responsive to the PRD opening. The retention element includes an end disposable between the PRD and the PRD frame with the retention element automatically activated to provide positive interference directed to maintain the PRD in the open condition.

Abstract: A method of manufacturing of a structured cooling panel includes cutting of desized 2D ceramic into tissues; slurry infiltration in the tissues by at least one knife blade coating method; laminating the tissues in a multi-layer panel, with slurry impregnation after each layer, wherein the tissue has combined fibres and/or pre-build cooling holes; drying; de-moulding; sintering the multi-layer panel, wherein part of the combined fibres burns out during the sintering process leaving a negative architecture forming the cooling structure and/or the pre-build cooling holes define the cooling structure; finishing, using of i) post-machine, and/or ii) surface smoothening/rework, and/or iii) coating application, and/or other procedures.

Abstract: A mechanical component for thermal turbo machinery, such as a steam or gas turbine, includes a base part and at least one additional device being mechanically coupled to the base part in order to influence the vibration characteristic of the base part during operation of the turbo machine. High-Cycle Fatigue at part-load can be reduced by enabling the mechanical coupling between the base part and the at least one additional device to change with the temperature of the at least one additional device.

Abstract: A turbo machine of the present disclosure includes a cylindrical bearing housing, a rotation shaft, a bearing, a bearing holder, and an end elastic body. The rotation shaft is located in the bearing housing. The bearing rotatably supports the rotation shaft at least in a radial direction of the rotation shaft. The bearing holder faces one end of the bearing and is fixed to the bearing housing. The end elastic body is disposed between the one end of the bearing and the bearing holder in the axial direction of the bearing and is in contact with the bearing and the bearing holder. The end elastic body is formed of a material having a lower modulus of elasticity than a material forming the bearing holder.

Abstract: In one aspect, a bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine may generally include a bearing including an outer race and an inner race, an outer bearing housing configured to extend radially between the outer race of the bearing and the support structure of the gas turbine engine and an inner bearing support configured to extend radially between the inner race of the bearing and the rotor shaft. In addition, the outer bearing housing and the inner bearing support each include at least one radially extending spring arm such that the outer bearing housing and the inner bearing support collectively form two springs coupled in series between the support structure and the rotor shaft.

Abstract: A coupling apparatus for use in sealingly connecting a first fluid flow path to a second fluid flow path. The coupling apparatus includes a rigid fluid flow channel having a first end and a second end, wherein the fluid flow channel is substantially rigid in an axial direction and a radial direction, a first sealing terminus that is rigidly connected to the first end and that is configured for sealing with the first fluid flow path, and a second sealing terminus that is slidingly disposed about the second end such that the second sealing terminus is configured for relative movement with respect to the second end, and wherein the second sealing terminus is further configured for sealing with the second fluid flow path.

Abstract: This invention relates to a method of condensing and energy recovery within a thermal power plant using the Venturi effect and gas stored under hydrostatic pressure and to an energy storage system using the method in a hydrogen and oxygen combusting turbine, where the hydrogen and oxygen gasses are produced by water electrolysis and hydrostatically pressurised and stored.

Abstract: A control device for a power generation system whereby power is generated by a first power source that operates by burning a fuel. The control device identifies, on the basis of a pressure difference in a prior-stage mechanism that supplies the fuel to the first power source, a fuel capacity that compensates for the pressure difference in the prior-stage mechanism. The pressure difference is the difference between a pressure set for the fuel before a load change in the prior-stage mechanism and a pressure set for the fuel after the load change in the prior-stage mechanism. The control device calculates a fuel supply command value, which is a command value for adjusting the amount of fuel supplied to a fuel supply device that supplies the fuel to the first power source, and is output to the fuel supply device using a fuel supply acceleration command value.

Abstract: Various examples are provided for cryogenic power extraction. In one example, among others, a system for cryogenic power extraction includes a heat exchanger that can heat a cryogenic working fluid using exhaust heat from a heat source, and a turbine that can generate power from the heated cryogenic working fluid. In another example, a method includes heating a cryogenic working fluid with waste heat from a heat source and driving a turbine with the heated cryogenic working fluid. Power produced by the turbine can be used drive a mechanical load and/or generate electricity for use by an electrical load. For example, waste heat from a combustion engine of a vehicle can be used to generate power for driving mechanical loads of the engine and/or to generate electricity for charging a battery of the vehicle.

Abstract: An adjusting device for adjusting valve clearance of a charge-cycle valve of an internal combustion machine is provided. The adjusting device includes a pivoted rocker lever, at one end of which an actuation element is positioned configured to transfer a force to the charge-cycle valve. A transmission element is attached to the actuation element at an opposite end to the charge-cycle valve of which a sleeve area is positioned, which is used to support the transmission element regarding the actuation element. A method for adjusting valve clearance of a charge-cycle valve of an internal combustion machine using an adjusting device is also provided.