Abstract: A multifunctional rotating control device (RCD) is provided. The multifunctional RCD includes an RCD assembly and a flow detection module. Further, the RCD assembly includes a body and a rotating sealing assembly. A bore through hole and a bypass outlet are formed in the body, and the rotating sealing assembly is provided in the bore through hole. Additionally, the bypass outlet is connected to a straight-through cut-off valve, and the flow detection module includes a flowmeter, a first flow cut-off valve, and a second flow cut-off valve. Further, the flowmeter extends upward in a direction of the bore through hole, and the first flow cut-off valve and the second flow cut-off valve are respectively provided at two ends of the flowmeter, and communicate with the flowmeter. Additionally, an inlet of the flowmeter is a flow detection input outlet, and the flow detection input outlet communicates with the straight-through cut-off valve.

Abstract: A ramp type frac plug device of the present invention is a simplified, short and compact frac plug device to both maintain seal to the borehole wall and prevent premature release from the borehole. The frac plug device includes a cone, an anchor assembly, a cap member, a slip device, and a sealing member. In a set configuration, the frac plug device has both the friction fit engagement of the cone and the slip device and a single direction rachet locked engagement of an anchor ring with a threaded ring portion and an anchor mandrel with an exterior threaded mandrel portion of the anchor assembly. The ratchet lock engagement between the anchor ring and the anchor mandrel prevents backward movement of the cone away from the anchor mandrel so that the cap member engaged with the anchor mandrel locks the slip device in position on the cone.

Abstract: A downhole tool having a mandrel and a slip. The mandrel has a mandrel body having a proximate end; a distal end; and an outer surface. The slip is a hybrid slip having a slip shell engaged with a slip core. When the slip shell is engaged with the slip core, at least one break point of the slip shell is aligned with a respective break point of the slip core.

Abstract: Methods for locating fluid interfaces in a cased wellbore include generating vibrations in the casing, thereby forming oscillations in the wellbore fluids and the casing. The oscillations are detected by a vibration detector. The oscillations are recorded by a data acquisition system. Mathematical processing of the oscillations by cepstrum analysis is performed to determine the depths of interfaces between fluids in the annulus. The methods may also be employed to determine the time at which a cement slurry begins to set and harden. The methods may be performed in real time.

Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.

Abstract: A downhole control arrangement for installation in hydrocarbon well and for controlling the operation of a downhole valve arrangement comprises an electrically controlled control valve, wherein the control arrangement comprises a control system and an electric power supply source configured for supplying electric power to the control system. A downhole valve arrangement for controlling the flow of an injection fluid into a production tubing of a hydrocarbon well comprises a control arrangement, and a side pocket mandrel for installation in a production tubing for use in a hydrocarbon well, wherein the side pocket mandrel comprises an interior pocket space and a valve arrangement.

Abstract: A fluid flow control system serving as an inflow port from a fluid reservoir (R) to the interior of a production pipe (S) is in the form of a housing (3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3l). The housing has a primary flow path (18) and a secondary flow path (19). The secondary flow path is in fluid communication with a chamber (B) in which is arranged an actuator (5) for a valve device (4), the valve device arranged to open and close the primary flow path. At least one flow restrictor (1,2) is arranged in the secondary flow path, the flow restrictor arranged to provide a pressure to chamber (B) sufficient to actuate the valve to an open position when the fluid flowing through the secondary flow path is oil, and a pressure sufficient to actuate the valve to a closed position when the fluid has a viscosity and/or density less than oil.

Abstract: Nuclear energy integrated hydrocarbon operation systems include a well site having a subsurface hydrocarbon well configured to produce a produced water output. The system further includes a deployable nuclear reactor system configured to produce a heat output. The system may further include a deployable desalination unit configured to produce a desalinated water output using the produced water output of the subsurface hydrocarbon well and the heat output of the deployable nuclear reactor. The system may further include a deployable off-gas processing system configured to produce an industrial chemical using the off-gas output of the subsurface hydrocarbon well and the heat output of the deployable nuclear reactor.

Abstract: A buoy accomplishes a fluid connection between a vessel on a water surface and a subsea template located on a seabed via at least one riser. A fluid is transported by the fluid connection from the vessel to the subsea template, and the fluid is injected from the subsea template (120) into a subterranean void via a drill hole. At least one valve in the buoy is controllable from an external site in response to commands so as to shut off the fluid connection from the vessel to the at least one riser.

Abstract: A dual header oil and gas industry hydrocarbon production manifold. A plurality of three-way directional valves separate fluid flow between a well side of manifold and a pipeline side of the manifold. Two headers include header bodies and header flow paths and a pipeline side couplings. Each of two elbow pipes, provide a flow path between one of the headers, and a port on one of the plurality of three-way valves. At least one T-pipe, provides a flow path between one of the headers, and a port on two of the plurality of three-way valves. A manifold body or any of its main parts may be hipped. A layout with such a manifold is also disclosed.

Abstract: A method can include receiving a number of samples of liquid production values and associated gas-lift injection rates for one of one or more wells; determining a prospective optimal gas-lift injection rate for the one of the one or more wells via a regression that fits the number of samples; responsive to the prospective optimal gas-lift injection rate satisfying one or more gas-lift injection rate criteria, issuing an instruction to implement the prospective optimal gas-lift injection rate for the one of the one or more wells; receiving a new sample as a measured liquid production value for the implemented prospective optimal gas-lift injection rate and responsive to satisfaction of one or more compliance criteria; and replacing one of the number of samples with the new sample.

Abstract: A side pocket mandrel for use in a gas lift system is configured to improve the recovery of petroleum fluids from a well. The side pocket mandrel includes an upper assembly joint, a lower assembly joint, and a central portion that has a total length (LT). The side pocket mandrel further comprises a central bore extending through the side pocket mandrel along a central longitudinal axis that extends through the upper and lower assembly joints. The side pocket mandrel further includes a tool channel offset from the central bore and a side pocket tube linearly aligned with the tool channel and configured to receive a gas lift valve. The side pocket mandrel further includes a pair of primary flow blocks that each have a length (LFa) that is at least 35% of the total length (LT) of the central portion of the side pocket mandrel.

Abstract: Provided, in one aspect, is a spin control valve assembly, comprising a stationary valve plate having a first stationary valve plate opening and a second stationary valve plate opening; and a rotating valve plate coupled longitudinally adjacent to the stationary valve plate, the rotating valve plate having a rotating valve plate opening, wherein the rotating valve plate is configured to rotate among at least three positions such that at each position of the at least three positions fluid flows at a different flow rate through the spin control valve assembly.

Abstract: Disclosed is an apparatus that when installed with an Electrical Submersible Pump (ESP) for fluid production protects an electric motor of the ESP from the effect of solids on a mechanical shaft seal of a motor protector of the ESP. Disclosed are features of the apparatus that dynamically filters the solids and prevents them from contacting or accumulating at the vicinity of the mechanical shaft seal.

Abstract: A surface treatment composition for inhibiting clay swelling in a hydrocarbon shale formation during stimulation containing a solvent and an effective amount of at least one of a quaternary monosaccharide having from about 1 to 3 moles of quaternary functional groups and a quaternary saccharide having a number of monosaccharide molecules ranging from about 2 to 20 bonded together by glycosidic linkage with from 1 to 3 moles of quaternary functional groups per molecule of the monosaccharide in the saccharide. A method of using the surface treatment for inhibiting clay swelling in a hydrocarbon shale formation during stimulation.

Abstract: A method for stimulating a reservoir includes providing a well traversing a subsurface into a reservoir containing hydrocarbons. Carbon dioxide and steam may be introduced into the reservoir via the well. The reservoir may be stimulated using one or more of infrasonic, acoustic, and ultrasonic stimulation. Seismic analyses may be applied to determine changes in flow characteristics of the reservoir. Monitoring a flow back effluent via one or more sensors located in the well may determine one or more properties of the flow back effluent. The introduction of carbon dioxide and steam, stimulating, and applying seismic may be repeated until a desired property of the flow back effluent is achieved. The method may include introducing hot carbonated water, carbon dioxide, and cold carbonated water into the reservoir via the well.

Abstract: A method is provided for producing hydrocarbons from a subterranean reservoir. A mixture of steam and H2S-sorbent particles (e.g., nanoparticles) is injected into the subterranean reservoir. This may be performed during the steam phase of a steam injection operation, such as steam assisted gravity drainage (SAGD), steam flooding, or cyclic steam stimulation, which is performed on the reservoir. The injected steam reduces the viscosity of the hydrocarbons in the subterranean formation. The injected H2S-sorbent particles attach to the subterranean reservoir and adsorb H2S therein. The hydrocarbons are produced to the surface, without producing the H2S-sorbent particles with adsorbed H2S that remain attached to the subterranean reservoir.

Abstract: In a fracturing control apparatus, a first chemical agent storage tank is connected with a first delivery pump, and a material outlet of the first delivery pump communicates with a first position of a first fracturing fluid conveying pipeline. An outlet of the first fracturing fluid conveying pipeline communicates with an inlet of a fracturing pump, an outlet of the fracturing pump communicates with an inlet of a second fracturing fluid conveying pipeline, and a first flow detector is arranged at a second position of the second fracturing fluid conveying pipeline. The first delivery pump is connected with a first output interface of a controller, and the first flow detector is connected with a first input interface of the controller. The fracturing control apparatus and the control method of the fracturing control apparatus are used for adding chemical agents into fracturing fluids.

Abstract: An illustrative modular manifold disclosed herein includes, among other things, a low-pressure manifold comprising a frac fluid outlet valve, wherein a fracturing fluid is adapted to be supplied from the low-pressure manifold via the frac fluid outlet valve to a suction side of a frac pump, and a high-pressure manifold comprising at least one frac fluid inlet valve, wherein the high-pressure manifold is adapted to receive, via the frac fluid inlet valve, a fracturing fluid discharged from the frac pump. In this example, the modular manifold also includes a support structure for mechanically supporting the low- and high-pressure manifolds and a plurality of height-adjustable support legs operatively coupled to the support structure.

Abstract: A desander assembly retrievably positionable in a tubing string including a fishing neck, a bypass tool, a stop assembly configured to retrievably mate with a portion of the tubing string, an outer tubular member, and an inner tubular member. The outer tubular member has at least one aperture extending. The inner tubular member is positioned in the outer tubular member to form an annulus and so a bore of the inner tubular member is in fluid communication with the bypass tool. The inner tubular member has at least one spiral protrusion extending outwardly from the sidewall to cooperate with an interior side of the outer tubular member to form a spiral channel. The bore of the inner tubular member receives reservoir fluid that passes into the annulus formed between the inner tubular member and the outer tubular member via the apertures of the outer tubular member.

Abstract: A sealing quality detection device for gas extraction boreholes includes a detection host, a detection pipe, a sealing element, and a three-way pipe. A plurality of air inlets and a plurality of exhaust ports are formed above the detection host, a negative pressure injector is arranged in the detection host, a quick joint and a control switch are also arranged on the detection host, the quick joint is used to be connected with an underground wind pipe, the underground wind pipe is connected to an underground compressed air tube, and the control switch is used for starting and switching off the negative pressure injector in the detection host. A sealing quality evaluating method for gas extraction boreholes is provided.

Abstract: A system and method are described to determine a pump intake pressure in a petroleum producing well. The system includes a controller at a well site of the petroleum producing well, a system of valves connected to pipes collecting the well casing gas produced from a casing annulus of the producing well. The valves are controlled by the controller and a pressure sensor measures the pressure of the well casing gas in the casing annulus. The system determines a well casing gas flow rate by measuring a build-up pressure of the well casing gas in a casing annulus when a valve from the casing annulus is closed. A fluid level in the casing of the well is determined using a pressure wave created in the well casing gas using the controller and the one or more valves. A fluid gradient correction factor is found using an actual fluid level in the casing. The controller then calculates the pressure using the gas flow rate, the fluid level and the fluid gradient correction factor.

Abstract: A downhole assembly includes a tubular body having a bore and a downhole tool connected to the tubular body. The downhole assembly also includes a sensor assembly having a carrier and a sensor. A sensor adapter is used to couple the sensor assembly to the tubular body. The sensor adapter includes an adapter body disposed in the bore of the tubular body; an adapter shaft for connection with the carrier; and a plurality of channels formed between the adapter shaft and the adapter body.

Abstract: A downhole gauge for recording data during well treatment comprised of an outer housing having pressure ports, and a pressure-tight inner housing wherein a plurality of sensors, a power source, and a memory configured to store measured data are housed. The outer housing consists of a first section having external pressure ports with a spherical outer surface and a cylindrical inner surface with a hollow lattice structure within, and a second half having no ports with a spherical outer surface and a conical inner surface with an internal hollow lattice structure within. The inner housing consists of a cylindrical body comprised of one section having no ports, and a second section having one port wherein a plurality of sensors can be affixed. The inner housing sections are releasably coupled to form a pressure-tight seal. Further, the outer housing sections are releasably coupled and enclose the inner housing therein.

Abstract: Pressure sensing plugs are used to check pressure in various void or cavities of a wellhead or Xmas tree of an active hydrocarbon well. Pressure sensing plugs (51) are provided at various points in the wellhead or Xmas tree (50). Each plug incudes a pressure transducer (39) and associated electronics allowing the pressure to be read by a hand held reader device. Alternatively, the plugs may include a radio transmitter for transmitting sensed data to a monitoring system via a wifi network or similar to a central control room on a hydrocarbon producing platform. In this way, the pressure at the various points in the wellhead/Xmas tree may be checked without exposing the cavity or void.

Abstract: A contactless orientation system coupled with an inner core tube to one or more record carriers on or associated with a core sample held in the core tube having a longitudinal core axis and a core face accessible from an end of the inner core tube. An instrument guide is coupled to the end of the core tube from which the core face is accessible with an axis of the guide parallel to the core axis. Correlation information is generated between a rotational orientation of a known point P on the instrument guide about the guide axis and core orientation data known to the contactless orientation system. The instrument acts as the record carrier or generates the record carrier provided with the correlation information enabling orientation of the core sample to its in-situ orientation when released from the core tube.

Abstract: Methods and systems are provided that characterize and evaluate well integrity of a cased well using unsupervised machine learning of acoustic data. Sonic waveform data for acoustic signals received by the receiver array of a sonic logging tool is collected and processed to determine a high-dimensional representation of the sonic waveform data. The high-dimensional representation is input to an unsupervised machine learning system to determine a low-dimensional representation of the sonic waveform data. A clustering method is applied to the low-dimensional representation to identify a set of clusters therein. At least one well integrity property of the depth interval of the cased well is determined based on the set of clusters. In embodiments, the at least one well integrity property can characterize cement condition in an annulus of the cased well as a function of azimuth and depth and can be used to evaluate cement integrity in a depth interval of the cased well.

Abstract: A system and method are provided for monitoring a wellbore in a lateral section, during stimulation, with equipment enabling retrieval in many conditions. The method includes monitoring the wellbore with a distributed fiber optic sensor to determine one or more characteristics of the stimulation operation using detected backscattered optical signals on the distributed fiber optic sensor. The method also includes retrieving a cable by exerting a traction force. A downhole device is provided for receiving the cable and includes retainers to maintain the cable and also includes a weakpoint configured to break when subjected to a force along a longitudinal axis of the downhole device that is greater than a predetermined threshold. The system includes the cable having the distributed fiber optic sensor, the downhole device, and a surface monitoring system for determining the characteristic of the stimulation operation using detected backscattered optical signals on the distributed fiber optic sensor.

Abstract: Described is a polymer-based well tracer. The polymer-based well tracer is a fluoropolymer having a fluorinated group. The fluoropolymer may be formed into a particle, a coating for proppant particulates, or encapsulated in a polymeric resin. Upon degradation or hydrolysis of the fluoropolymer, the fluorinated group having a fluorinated compound is released within the well.

Abstract: A system includes a surface device, preferably positioned on a surface, a downhole device, and a wireline communications system. A downlink communication between the surface device and the downhole device occurs via Hopped Frequency Shift Keying (HFSK) voltage-modulated signals. An optional uplink communication between the downhole device and the surface device may occur via Frequency Shift Keying (FSK) current-modulated signals. The downhole device may comprise an addressable switch.

Abstract: Systems and methods for adaptively receiving telemetry data are disclosed. In one example embodiment of a method, mud pulse telemetry data is transmitted from a downhole location. The transmitted data may be received at a plurality of transducers. Each of the transducers may be positioned at a different location of a drilling operation. The received data from the plurality of transducers may be processed simultaneously. The data which most likely corresponds to the transmitted mud pulse telemetry data may be selected and output. In some embodiments received data from the plurality of transducers is processed with a plurality of different decoding chains. Parameters of individual ones of the decoding chains and/or the number of decoding chains may be autonomously varied.

Abstract: A bottomhole assembly (BHA) includes an orientation sub and a non-magnetic whipstock. The orientation sub is configured to receive a gyroscopic orientation tool or is a measurement-while-drilling sub for orienting the orientation sub in a wellbore formed in a subterranean formation. The non-magnetic whipstock is coupled to the orientation sub. The non-magnetic whipstock includes a ramp with a sloped surface that is configured to divert a direction of a drill bit that has drilled through the orientation sub for sidetracking from the wellbore and forming a secondary wellbore in the subterranean formation. The ramp defines a set of ports that are configured to allow cement to permeate throughout the ramp for securing the non-magnetic whipstock in the wellbore before diverting the direction of the drill bit.

Abstract: A directional drilling method applied to a rigid bending joint directional drilling device includes: obtaining geological data; determining a lateral drilling point and a target point of a branching borehole based on the geological data; drawing a target borehole trajectory of the branching borehole based on the lateral drilling point and the target point; obtaining parameters of the drill pipe; determining a propulsion force corresponding to the target borehole trajectory based on the parameters, the target borehole trajectory, and the geological data; and applying the propulsion force to the rigid bending joint directional drilling device for drilling the branching borehole. A directional drilling system and related devices are also disclosed.

Abstract: The present disclosure relates to a method of drilling an investigation well by use of an auxiliary table simultaneously with the operation of a main table of a dual-activity rig, which comprises assembling and lowering the drilling BHA (Bottom-Hole Assembly) with LWD (Logging While Drilling) tools and other components, starting drilling the investigation well with control of parameters, carrying out monitoring with ROV (Remoted Operated Vehicle) on the seabed for as long as possible, working on drilling parameters to optimize the drilling, within a defined rate for data acquisition, controlling flow rate in friable formations, moving viscous plugs to clean the investigation well, carrying out the pre-tests when part of the acquisition scope, promoting circulation of seawater to clean the investigation well, and filling the investigation well with heavy fluid.

Abstract: A particle impact drill bit for a well system includes a central axis, a longitudinal first end, a longitudinal second end opposite the first end, and a feed passage extending into the drill bit from the first end, a pilot section located at the second end, the pilot section including one or more converging nozzles in fluid communication with the feed passage, and a reamer section located between the first end and the second end and including one or more reamer blades extending radially outwards from the central axis of the drill bit, and wherein the reamer section defines a maximum width of the drill bit.

Abstract: A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250 degrees Celsius. While drilling, a drilling fluid is flowed at a temperature at the rock face such that a difference between the inherent temperature of the rock adjacent the rock face and the temperature of the drilling fluid at the rock face is at least 100 degrees Celsius.

Abstract: A high pressure fluid drill head system for boring holes in both residential and non-residential areas for geothermal energy shafts. The high pressure drill head system having a body sized for the intended borehole to be drilled and including a plurality of parts coupled together via one or more fastening methods. The plurality of parts including an outflow channel within the body, a piston, at least one high pressure flow channel disposed within the body, the high pressure flow channel disposed parallel to the outflow channel, a nozzle in fluid communication with the high pressure flow channel, the nozzle having at least one orifice configured for ejecting a fluid, and a return feed inlet disposed at the lower end of the body, the return feed inlet in fluid communication with the outflow channel.

Abstract: An apparatus for injecting grouting material, a mining machine and a method of reinforcing rock surfaces by a grouting material is provided. The apparatus includes an injector head provided with a mixing device, which are both insertable into a drilled hole. The apparatus is for feeding resin mixtures having two different setting times. The injector head is connected to a fluid inlet arrangement having a common first feed line for slow and fast resin base components and a second feed line for a resin catalyst.

Abstract: Disclosed is a self-drilling resin anchored rock bolt with an elongate body of a suitable metal material extending between distal and proximal ends; and a drill bit engaged to the distal end; which body includes a threaded portion at the proximal end, a resin bore which extends through the elongate body, opening at each of the ends, a first integral anchor on the body, including integrally formed paddle formations; wherein the drill bit engaged with the body has a resin conduit which communicates an exterior of the drill bit with the resin bore; wherein the threaded portion has a first section, with a first thread density, extending from the proximal end, and a second section, with a second thread density, starting at the end of the first section and extending towards the distal end; and wherein the first thread density is lower than the second thread density.

Abstract: Methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.

Abstract: A system for controlling a turbine valve is provided. The system includes a hydraulic pilot valve section being moveable in a first direction and a second direction; a main hydraulic valve section being moveable in a first direction to close the turbine valve and a second direction to open the turbine valve; a position demand indicating a desired position of the turbine valve; a first feedback indicating an actual position of the hydraulic pilot valve section; and aa second feedback indicating an actual position of the main hydraulic valve section. The system also includes a pilot valve error; a main valve error; a turbine valve error; and a pilot valve adjustment moving the hydraulic pilot valve section in response to the turbine valve error. The turbine valve error is repeatedly determined and the pilot valve adjustment repeatedly moves the hydraulic pilot valve section to minimize the turbine valve error.

Abstract: A rotary machine, such as a turbomachine of a gas turbine engine, for example, including a rotor and a rotor seal assembly. The rotor is rotatable about a rotational axis and has a rotor seal face. The rotor seal assembly includes a seal body, one or more primary fluid conduits formed in the seal body, and a retraction assembly. The seal body has a seal face and is positionable to form a fluid-bearing gap between the seal face of the seal body and the rotor seal face. The one or more primary fluid conduits are fluidly connected to the fluid-bearing gap to supply a fluid to the fluid-bearing gap. The retraction assembly is connected to the seal body to move the seal body in a retraction direction away from the rotor seal face.

Abstract: A shroud assembly for a turbine engine having a centerline axis. The shroud assembly having a shroud hanger, at least one shroud segment, and at least one biasing element extending between the two. The biasing element configured to radially bias the at least one shroud segment between an outboard position and an inboard position radially outward from the outboard position with respect to the centerline axis.

Abstract: Lubricant pump systems and associated methods for aircraft engines are provided. The method includes receiving an input torque, dividing the input torque between a first load path receiving a first portion of the input torque, and a second load path receiving a second portion of the input torque. A first lubricant pump of the aircraft engine is driven via the first load path using the first portion of the input torque. A second lubricant pump of the aircraft engine is driven via the second load path using the second portion of the input torque. When a malfunction of the second lubricant pump occurs, the method includes ceasing to drive the first lubricant pump and the second lubricant pump using the input torque.

Abstract: The guide vane assembly as well as to a method for mounting a guide vane assembly of a turbomachine, including a number of adjustable guide vanes, provides a guide vane platform of which has a guide vane journal that is mounted in a receiving opening of a housing of the turbomachine, wherein a guide vane head of the guide vane has a bearing pin, which is mounted on an inner ring arranged on a rotor of the turbomachine. In the method, a guide vane journal, which is arranged on a guide vane platform of a guide vane, is brought into a receiving opening of a housing, which is arranged radially with respect to a rotor axis of the turbomachine, and an inner ring is provided on a rotor of the turbomachine.

Abstract: An airfoil includes a plurality of cooling paths through which cooling air flows, and a first flow guide and a second flow guide disposed at a path connection part connecting the cooling paths to guide the flow of the cooling air, wherein the first flow guide is fixed to a pressure surface and the second flow guide is fixed to a suction surface.

Abstract: A turbine housing clamping connection for a turbine, and a turbine having a turbine housing clamping connection are described herein. The turbine housing clamping connection has a bearing housing, a turbine housing and a clamping component comprising a clamping flange clamped between a bearing housing clamping portion of the bearing housing and a turbine housing clamping portion of the turbine housing. The clamping flange has a bearing-housing-side clamping surface comprising a convexly curved clamping surface region. Furthermore, the convexly curved clamping surface region defines a minimum radius of curvature. A ratio of the minimum radius of curvature to an inner radius of the clamping surface is at least 0.1 and/or at most 10, and preferably at least 0.5 and/or at most 2.0, and more preferably at least 1.0 and/or at most 1.4.

Abstract: An airfoil assembly for a gas turbine engine includes: an inner support structure configured to circumscribe a longitudinal axis of the gas turbine engine; an outer support structure configured to circumscribe the longitudinal axis of the gas turbine engine, the outer support structure circumscribing the inner support structure; and a stage including a plurality of airfoils extending from the inner support structure towards the outer support structure, the plurality of airfoils including: a first airfoil defining a first sweep angle, a first axial position, and a first lean angle; and a second airfoil defining a second sweep angle, a second axial position, and a second lean angle, wherein the second sweep angle is different than the first sweep angle, the second axial position is different than the first axial position, the second lean angle is different than the first lean angle, or a combination thereof.

Abstract: A stator vane for a turbomachine, including an airfoil having a leading edge and a trailing edge, which are interconnected by a suction side and a pressure side, the airfoil extending substantially in a radial direction between an inner platform and an outer platform, wherein, when viewed in an axial direction of the turbomachine toward the trailing edge, the trailing edge extends so as to be inclined at a first angle to the pressure side radially on an outside in relation to the radial direction at a circumferential position at which the trailing edge meets the outer platform, and wherein the first angle between the trailing edge and a tangent to the outer platform at a transition from the outer platform to the trailing edge is between 72° and 84°.

Abstract: An optimized blade with an anchor element to be used in a streaming engine and method of manufacturing such blade. The blade contains a lower part, an upper part and an anchor element, wherein the anchor element is located inside of the blade, and wherein the anchor element connects the lower part and the upper part.