Abstract: A procedure and apparatus for cementing and cleaning a reservoir liner 3 comprises installing a reservoir liner using a drill string 4 which extends only as far as the distal end of a cased part 2 of the well, then, using the drill string, displacing cement into the reservoir liner using completion fluid whereby, when the cement is in place in the annulus around the reservoir liner, the reservoir liner is already clean and filled with completion fluid. A ball valve 6 at the top of the reservoir liner 3 is then closed before the cased part 2 of the wellbore is cleaned, to avoid debris entering the reservoir liner.

Abstract: A bottom hole assembly (BHA) incorporates a tubular cutter driven by a downhole motor. A scraper moves into a smaller tubular to clean an area where a spear will later be engaged to the cut tubular portion. The scraper has a relatively movable mandrel that allows straight through flow into the motor or closes flow to build pressure to a telescoping jack to exert a pull force on the cut tubular after the cut is made. The spear is articulated with mandrel manipulation to grab the cut segment and weight is set down to shift the mandrel in the scraper to allow pressure buildup with rig pumps turned on to retract the jack as the BHA is held with anchors in the larger tubular. The cut segment is pulled uphole to loosen it so it can be removed from the borehole.

Abstract: A subterranean coring assembly can include a body having at least one wall that forms a cavity, wherein the cavity has a top end and a bottom end. The subterranean coring assembly can also include a first flow regulating device movably disposed within the cavity toward the top end, where the first flow regulating device is configured to move from a first default position to a first position within the cavity based on first flow characteristics of fluid that flows into the top end of the cavity toward the bottom end of the cavity.

Abstract: The magnetic fishing tool has an axial flow passage through a valve member and one or more magnets for initial dispersal of debris away from the fish. Once engaged to the fish the flow direction can be altered by moving the valve member to open lateral ports and to close the straight through path so that fluid circulates above the fish to clear debris from ahead of the fish on the trip out of the hole. This can be accomplished with an object landed on a seat in the valve member, which causes it to shift axially to expose the lateral ports. Optionally the valve member can be shifted with flow in which case the flow will continue axially as well as laterally for the retrieval of the fish.

Abstract: The invention relates to the cleaning of a wellbore including a reservoir liner 3 and an upper portion 2 of the wellbore, by running in only one string into the wellbore and performing a reservoir liner cementing operation, displacing the cement 7 with completion fluid 8, followed using the same string to circulate mud in the upper completion, perform an inflow test on the reservoir liner 3, wash the upper completion and displace it to completion fluid 8.

Abstract: Downhole tools, methods, and systems related thereto. An example downhole tool includes a body comprising a degradable core and a chelating agent or a chelating agent/scale inhibitor mixture integrated therein. The chelating agent and scale inhibitors help to direct and control the degradation of the degradable core.

Abstract: An injection and downhole-mixing system and method mix two or more components downhole in a wellbore. The system delivers two or more components via fluidly separated delivery channels from the surface into a downhole injection point of the wellbore wherein they are mixed and injected into the wellbore to form a solidifying isolation mixture therein at or about the downhole injection point. After set, the isolation mixture forms a solid, impermeable barrier in the wellbore. The components for forming such barriers may be epoxies, polymers, resins, resin-based gypsum cements, and the like.

Abstract: A system and method according to which a downhole component positioned behind a casing is powered, the casing extending within an oil and gas wellbore that traverses a subterranean formation. Powering the downhole component may include inducing an electrical current to flow in the casing; permitting the electrical current to flow out of the casing to create a first potential difference between a first point and a second point spaced therefrom, the first and second points being located behind the casing; utilizing the first potential difference to store electrical power; and supplying the stored electrical power to the downhole component positioned behind the casing to thereby power the downhole component. The system may include a power source in electrical communication with the casing; a power harvester positioned behind the casing and in electrical communication with the downhole component; and a current return unit in electrical communication with the power source.

Abstract: The invention is a method for exploiting a subterranean formation including hydrocarbons with at least one lithologic facies of the formation having undergone at least one diagenetic phase over geological times. From at least one sample of rock obtained from the formation, from measured production data relating to the formation and from a meshed representation representative of the formation, each mesh of the meshed representation is determined including at least one indicator relating to the distribution of the facies present in the mesh. The method comprises a step of history matching in which at least one of the adjustment parameters is the diagenetic state of the identified facies.

Abstract: A system for connecting two conduits in a body of water, exhibits a first tubular structure, which is coupled to a conduit that extends along a first longitudinal axis; a second tubular structure, which is coupled to another conduit that extends along a second longitudinal axis and comprises a tubular member, and a sleeve, which is telescopically coupled to the tubular member, and faces the first tubular structure; and an actuating assembly, which comprises a bidirectional translating device configured to selectively displace the sleeve forward and backward to selectively couple and uncouple an end portion of the sleeve and the first tubular structure.

Abstract: An apparatus and method for specialized shaped charges that perforate similar sized diameter holes regardless of the fluid gaps between the shaped charge and the casing wall. Shaped charges having three conical or frusto-conical liner sections are disclosed, where the apex liner section has a larger conical angle than the outer liner section are disclosed.

Abstract: A method, system, and apparatus for restraining a firing pin using a bushing for use in a downhole switch that is armed using the explosive energy of a previously detonated shaped charge.

Abstract: A method and apparatus for detonating a power charge in downhole wellbore using a heating element embedded within the energetic material of the power charge.

Abstract: A firing head assembly is described. The firing head assembly includes a tubular housing, upper piston and lower pistons, and a compressible member arranged within a lumen of the tubular housing and positioned between the upper and lower pistons. According to an aspect, the assembly includes a safety assembly that includes a sleeve having a zigzag shaped slot therein. The safety assembly may include a key that radially extends from a surface of one of the pistons, through the zigzag shaped slot. The distance between the upper and lower pistons may be adjusted by adjusting a pressure inside the tubular housing and a second pressure outside the tubular housing. The upper and lower pistons may function to operatively adjust the arrangement of the key within the zigzag shaped slot to activate the firing head assembly to either trigger an explosive reaction or to not trigger the explosive reaction.

Abstract: Methods for equalizing flow into a wellbore using consolidated material are described. An unconsolidated material and a consolidation fluid are flowed into a wellbore formed in a hydrocarbon-bearing subterranean zone, and a permeability of the subterranean zone to flow fluid through the subterranean zone into the wellbore is non-uniform across an axial length of the wellbore. The unconsolidated material and the consolidation fluid are contacted across at least an axial segment of an inner surface of the wellbore, and the unconsolidated material is bound with the consolidated fluid to form a pack, in which the pack has a permeability that is more uniform than the permeability of the subterranean zone. A flow of fluids from the axial segment of the subterranean zone into the wellbore is controlled through the pack.

Abstract: A ported casing collar. The ported casing collar comprises a tubular body defining an outer sleeve. At least first and second portals are placed along the outer sleeve. The casing collar also comprises an inner sleeve. The inner sleeve defines a cylindrical body rotatably residing within the outer sleeve. The inner sleeve contains a plurality of inner portals. A control slot is provided along an outer diameter of the inner sleeve. In addition, a pair of torque pins are provided, configured to ride along the control slot in order to place selected inner portals of the inner sleeve with the first and second portals of the outer sleeve. Preferably, the setting tool is a whipstock configured to receive a jetting hose and connected jetting nozzle. A method of accessing a rock matrix in a subsurface formation is also provided.

Abstract: In accordance with presently disclosed embodiments, a system and method for using fuel cells to generate electricity for powering well stimulation equipment (e.g., high pressure hydraulic pumping units) at a well stimulation site are provided. The fuel cells may be coupled to the stimulation equipment via a DC/AC converter and, in some embodiments, via a variable frequency drive (VFD). The fuel cells may be arranged in a fuel cell stack that is used to generate electricity to power various electrical devices (e.g., electric motors) on the equipment. The fuel cells generally operate at higher efficiencies than is available through the use of diesel engines. In addition, the fuel cells may require less frequent refueling and provide a more centrally located area for refueling, lower emissions, and quieter operations than are currently available using diesel engines.

Abstract: This invention provides an oxidant injection device for an underground coal gasification process. The oxidant injection device includes an oxidant pathway which includes a swivel joint, coiled tubing, and a mechanical shear-off device which are in gas tight connection with each other in that sequence. Attached to the mechanical shear-off device is an oxidant nozzle, wherein the shear-off device is adapted to shear the oxidant nozzle to allow retraction of the coiled tubing when necessary, and wherein the swivel joint causes the surface oxidant source to be in gas tight connection with the coiled tubing reel centre shaft, thereby allowing continuous oxidant injection during the process of moving the oxidant nozzle via the movement of the coiled tubing when rotating the coiled tubing reel.

Abstract: An electric submersible pump (ESP) gas separator is described. An ESP gas separator includes a propeller upstream of a fluid entrance to a crossover, the crossover including a production pathway and a vent pathway, and the propeller including a plurality of blades comprising washout twist, wherein gas rich fluid of multi-phase fluid traveling through the gas separator flows through the propeller and into the vent pathway, and gas poor fluid of the multi-phase fluid flows around the propeller and then through the production pathway. An ESP assembly includes a gas separator between a centrifugal pump and an induction motor, the gas separator serving as an intake for fluid into the centrifugal pump and including a propeller in a separation chamber, the propeller comprising a plurality of blades, each blade having a pitch that increases in coarseness from a hub towards a shroud of the propeller.

Abstract: The structural integrity and reliability of a downhole tool, mandrel, casing or other downhole component may be improved by implementation of a design and configuration that does not require several separate components to be coupled together. Conductive ink electromagnetic antennas may be painted on an insulating layer or sheet. The insulating layer or sheet is affixed to the downhole component. The conductive ink electromagnetic antennas mate to wiring of the mandrel via caps or caps and pins. The conductive ink electromagnetic antennas may be excited and downhole measurements received that are indicative of any number of downhole parameters or conditions. The conductive ink electromagnetic antennas may be painted in any shape, dimension or size necessary for a given operation.

Abstract: This invention relates to the oil and gas production industry and can be used in geophysical surveys of horizontal and deviated (including vertical) wells for their injectivity profiling and assessment of total fluid loss into the lower zone of a target interval, inaccessible for survey, and below the bottom hole. As distinguished from direct injection profiling methods applied to perforated intervals, the proposed technology can be used in the presence of both behind-casing and wellbore cross-flows.

Abstract: A method includes obtaining a measurement of one or more properties of a downhole fluid using a fluid analysis tool. The fluid analysis tool includes fluid sensors and one or more processors coupled with the fluid sensors. A first prediction is generated using the measurement from the fluid sensors. A second prediction is generated using an adaptive neuro-fuzzy inference system based on the first prediction of the properties.

Abstract: A technique facilitates evaluation of a fluid flowing through a tubing and includes at least one sensor deployed along an interior of the tubing. Each sensor comprises a plurality of electrodes and insulation material disposed between the electrodes to isolate the electrodes from each other and to facilitate resistivity measurements. The plurality of electrodes comprises electrodes for emitting an electric current and for monitoring voltage so as to enable resistivity measurements with respect to fluid flowing through the tubing. The resistivity measurements may be used to determine a constituent fraction, e.g. a water fraction, of the fluid flowing through the tubing.

Abstract: An expandable rock bolt which is formed with a expansion body having a transversal cross section that has a deformed shape which defines at least one lengthwise groove having ends that include caps with a filling component on an inlet side and an end component on an outlet side. The expandable rock bolt is further equipped with at least one indicator of clamping which is formed with a hollow tube which is made of an elastically compressible material and which is placed on a wall of the expansion body along which the indicator is taken out on a visible side for staff whereas at least in a part of an internal cavity of the tube of the indicator is placed an indication medium.

Abstract: In order to compensate for the increase in a leakage rate of ventilation air originating in a circuit via a labyrinth seal that gradually wears at the bottom of a ventilation chamber, and the reduction of a purge rate via an opening upstream from the chamber, a second injection opening is added to a main injection opening. The second injection opening communicates with the chamber via a second labyrinth seal that wears at the same time as the first, and thus gradually increases the air flow rate passing through the injector in order to compensate for the additional leakage rate through the first injector and maintain the ventilation at its initial level.

Abstract: A gas turbine engine 10 is provided in which a fan having fan blades 139 in which the camber distribution relative to covered passage of the fan 13 allows the gas turbine engine to operate with improved efficiency when compared with conventional engines, whilst retaining an acceptable flutter margin.

Abstract: A gas turbine engine 10 is provided in which a fan having fan blades 139 in which the camber distribution relative to covered passage of the fan 13 allows the gas turbine engine to operate with improved efficiency when compared with conventional engines, whilst retaining an acceptable flutter margin.

Abstract: Shrouds and shroud segments for gas turbine engines are provided. In one exemplary aspect, a gas turbine engine includes a first rotor blade stage and a second rotor blade stage. The gas turbine engine also includes a shroud formed from a plurality of shroud segments that each have a body and a vane extending from the body. The vane is disposed within the flow path between the first rotor blade stage and the second rotor blade stage to form at least a portion of a nozzle stage. Further, the body of the shroud segment defines an outer wall of the flow path and spans from the first rotor blade stage to the second rotor blade stage. An impingement baffle segment couples the shroud segment with a casing of the gas turbine engine.

Abstract: A sealing system for a rotary machine is provided. The sealing system includes a pair of circumferentially-adjacent rotary components and an axial seal. Each of the rotary components includes a platform including a first side channel and an opposite second side channel, a shank extending radially inwardly from the platform, and a dovetail region extending radially inwardly from the shank. The axial seal is sized and shaped to be received in the first side channel of a first of the rotary components and the second side channel of a second of the rotary components, such that the axial seal sealingly interfaces with the first and second channels.

Abstract: A rotatable component for a turbomachine and a method for regulating a circumferential ingress of a fluid at a trailing edge of the rotatable component are disclosed. The rotatable component includes an airfoil and a mechanical component. The airfoil includes a pressure side and a suction side. The mechanical component is coupled to the airfoil and includes a forward overhanging portion, and an aft overhanging portion. The forward overhanging portion is disposed at a leading edge of the airfoil and extends longitudinally beyond the leading edge. The aft overhanging portion is disposed at a trailing edge of the airfoil and extends longitudinally beyond the trailing edge, where both the forward and aft overhanging portions further extend circumferentially along the pressure side and the suction side of the airfoil. The aft overhanging portion includes a non-axisymmetric profile for regulating the circumferential ingress of the fluid from the pressure to suction sides.

Abstract: A variable nozzle mechanism in which a nozzle mount has a first surface which has a minimum clearance in a direction of an axis with respect to a lever side facing surface in an opposing region facing the lever side facing surface in the direction of the axis, and a second surface which is disposed adjacent to the first surface in a circumferential direction of the nozzle mount and has a clearance in the direction of the axis with respect to the lever side facing surface larger than the clearance in the direction of the axis between the first surface and the lever side facing surface.

Abstract: A gas turbine engine component formed of material having phononic regions. The phononic regions are formed of non-metallic nanostructures. The phononic regions modify the behavior of the phonons and control heat conduction.

Abstract: A support system for a gas turbine engine is provided. The support system includes a load-bearing unit that includes a first flange, a support element supporting the load-bearing unit and having a second flange, a fastener connecting the first flange and the second flange, a first super-elastic shape memory alloy component in contact with the first flange, and a second super-elastic shape memory alloy component in contact with the second flange. The first and the second super-elastic shape memory alloy components are configured to deform when a load exerted by the fastener exceeds a threshold load value of the fastener.

Abstract: A routing plate assembly is provided and includes a gearbox having an aft surface, first and second hydraulic components, a routing plate comprising a forward side affixable to the aft surface of the gearbox, an aft side to which the first and second hydraulic components are affixable and a body. The body is formed to define interfacial pathways by which the gearbox and the first and second hydraulic components are communicative.

Abstract: An internal structure of a primary exhaust duct of a turbomachine. The internal structure comprises a primary wall comprising a surface of revolution, allowing air to pass through the orifices and forming an internal surface of the primary exhaust duct, an interior skin, comprising a surface of revolution, arranged inside the primary wall and extending between an upstream flank for facing toward the front of the turbomachine and a downstream flank for facing toward the rear of the turbomachine, and a plurality of spacers angularly distributed around a periphery of the interior skin and fixed between the primary wall and the interior skin. The particular way in which the interior wall is fixed makes the internal structure easier to construct and allows attenuation of noise at chosen frequencies.

Abstract: A gas turbine engine component assembly is provided. The gas turbine engine comprises: a first component having a first surface and a second surface opposite the first surface; a second component having a first surface and a second surface, the first surface of the first component and the second surface of the second component defining cooling channel therebetween in fluid communication with the cooling hole for cooling the second surface of the second component; and a particulate mitigation device extending from the first surface of the second component a selected distance wherein the particulate mitigation device has an opening therethrough in fluid connection with the cooling channel, and wherein the selected distance is selected to reduce the amount of particulate entering the cooling channel.

Abstract: A turbine-generator system that uses high pressure steam to turn a turbine connected to a power generator. High pressure steam is generated by a continuous flow of pressurized water. The pressure steam generator can be configured as a separate unit, or as a part of the turbine. Steam is applied to the turbine from one high pressure steam unit through at least one nozzle, applying the steam against the turbine blades.

Abstract: Extra heat in a closed cycle power generation system, such as a reversible closed Brayton cycle system, may be dissipated between discharge and charge cycles. An extra cooling heat exchanger may be added on the discharge cycle and disposed between a cold side heat exchanger and a compressor inlet. Additionally or alternatively, a cold thermal storage medium passing through the cold side heat exchanger may be allowed to heat up to a higher temperature during the discharge cycle than is needed on input to the charge cycle and the excess heat then dissipated to the atmosphere.

Abstract: There is provided a supercritical carbon dioxide (CO2) power generation system including a first compression part and a second compression part to independently compress the working fluid; a first regeneration part to heat the working fluid compressed by the first compression part; a second regeneration part to heat the working fluid heated by the first regeneration part and the working fluid compressed by the second compression part; a main heat exchange part to transfer heat generated from a heat source to the working fluid; an expansion part to generate power by expanding the working fluid; a power transmission part to transmit the power; and a power generation part to generate electric power using the power.

Abstract: A phase setter for adjusting the rotational angular position of a cam shaft relative to a crankshaft of an internal combustion engine. The phase setter includes a stator; a rotor which together with the stator forms a first and second pressure chambers; a control valve featuring a pressure port, and first and second working ports; a feed for the inflow of pressure fluid to the pressure port, a first connecting channel connecting the first pressure chamber to the first working port, and a second connecting channel connecting the second pressure chamber to the second working port; and a reflux valve device acts in the feed and includes a valve structure extending annularly around the rotational axis and has one or more spring tongues or can be axially moved to restrict backflow of pressure fluid through the feed more significantly than the inflow of pressure fluid to the pressure port.

Abstract: An actuating system of an engine valve comprises a movable member, for example, in the form of a master piston controlled by a cam of a camshaft. A slave piston is hydraulically controlled by the master piston by means of a volume of pressurized fluid, to open said engine valve against the action of a return spring. The system also comprises an auxiliary device for applying an additional force to the engine valve to keep the engine valve in a closed position. The auxiliary device is configured or controlled in such a way that the total force tending to keep the engine valve in its closed position varies during each rotation cycle of the cam. The total force is higher at least in one part of the rotation cycle of the cam wherein the engine valve must remain in its closed position, and is, instead, reduced at least in one part of the rotation cycle of the cam wherein the engine valve is not in its closed position.

Abstract: A valve drive comprising a camshaft with base shaft, a lobe pack mounted on the base shaft and comprising three cam lobes. Two actuator bodies are associated with two actuator pins each connected to a valve of a cylinder of the engine. The lobe pack is axially displaceable along the base shaft so as to for each actuator body change cam lobe aligned therewith. A middle cam lobe has a shape leaving an actuator body aligned therewith uninfluenced thereby. In a first position of the lobe pack a first of the actuator bodies is aligned with and hit and moved by a first cam lobe and the other, second actuator body is aligned with the middle cam lobe, and in a second position the second actuator body is aligned with and hit and moved by a third cam lobe and the first actuator body is aligned with the middle cam lobe.

Abstract: An engine block with an oil path switching arrangement is proposed. The engine block includes an oil sump, an oil pump, a clean oil riser and a switching valve. The switching valve has in each case connections for the oil sump, the oil pump and the clean oil riser. The switching valve is switchable to open and close the connections, including a first position in which a connection between the clean oil riser and the oil sump is established, thereby avoiding discharge of oil in the clean oil riser through an oil filter receptacle during an oil change.

Abstract: Methods and systems are provided for adjusting a flow profile of a windage tray. In one example, a method for operation an engine system is provided that includes operating an engine to perform combustion, determining an engine speed, and adjusting a flow profile of a plurality of deflectors in a windage tray positioned in a crankcase based on the engine speed.

Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned and an electrical motor for rotating the rotating member.

Abstract: Combustion gas of an internal combustion engine passes through an exhaust system to an outlet opening. A detection device generates a state signal that describes an engine noise of the internal combustion engine. A control apparatus actuates at least one loudspeaker to produce a sound at the outlet opening based on the state signal to compensate for the engine noise or produce another engine noise, independently of the state signal based on predetermined audio data and thereby to use the at least one loudspeaker to audibly output an advisory signal described by the audio data.

Abstract: A cold start-compatible urea SCR system using an exhaust gas purification device, the exhaust gas purification device including a diesel fuel injection means, a DOC, a lean NOx trap release material (LNTR), a urea water injection means, an catalyst of selective catalytic reduction (SCR), and a measurement and control means, the DOC and LNTR being supported on a support in an upper-lower or a front-rear divided manner, the DOC being located in an upper layer or a lower layer, or on a front side, the LNTR being located in an upper layer or a lower layer, or on the rear side.

Abstract: A regeneration control device controlling a temperature increase unit of an exhaust gas treatment device including a DOC disposed in an exhaust passage of a diesel engine to regenerate the exhaust gas treatment device includes: a DOC temperature-increase-necessary-state detection part detecting a temperature increase necessary state including at least one of a blockage state, detected on the basis of comparison between a blockage parameter related to blockage of the DOC and a predetermined blockage threshold, of the DOC or a blockage risk state, detected when the diesel engine is in an operating state that is likely to cause blockage of the DOC, of the DOC; and a DOC temperature increase execution part executing a DOC temperature increase control including: a first temperature increase process to control the temperature increase unit, if the temperature increase necessary state of the DOC is detected, so as to increase the temperature of the DOC to a first temperature at which the DOC activates; and a second

Abstract: A line connector for a fluid, in particular a urea solution, including a connecting piece with an interior flow-through channel extending in the longitudinal direction of the connecting piece. The connecting piece includes at each of its two ends a coupling section designed such that a flexible media line or a tubing or an aggregate can be connected to an aggregate connector. The flow-through channel is also provided with an electrical heating unit. In the region of the flow-through channel, between the connecting sections, an enclosed perimeter receiving housing is formed on the coupling piece, in which an optical sensor unit is disposed for measuring of properties of the fluid flowing in the flow-through channel. A ready-made media line, including a tubular or hose-like media line and a line connector connected on one or both sides to this media line is also disclosed.

Abstract: A method, control system, and vehicle system configured to control a selective catalyst reduction (SCR) system subtracts an amount of NOx present in a tailpipe upstream of the SCR system from an amount of NOx present in the tailpipe downstream of the SCR injector. A cumulative difference may be determined based on integrating the subtracted NOx value. The method, control system, and vehicle system are configured to determine whether the cumulative difference exceeds a control threshold, and to set a selected upstream NOx value as a predetermined model upstream NOx amount if the cumulative difference exceeds the control threshold, but to set the selected upstream NOx value as the determined upstream NOx amount if the cumulative difference does not exceed the control threshold. Thus, the system is reset to the model when downstream NOx values exceed upstream NOx values above a threshold, to bring the system back within control.