Abstract: Fluid-sealing downhole bridge plugs may include a pair of sealing rings which prevent flow of well fluid through the interface between a mandrel shaft of a mandrel and expansion elements of the downhole bridge plug. An illustrative embodiment of the fluid-sealing downhole bridge plugs includes a mandrel. At least one sealing element may be provided on the mandrel. A first backup ring may be provided on the mandrel on a first side of the at least one sealing element. A second backup ring may be provided on the mandrel on a second side of the at least one sealing element. A first gage ring may be provided on the mandrel in engaging relationship to the first backup ring. A second gage ring may be provided on the mandrel in engaging relationship to the second backup ring. A first ring space may be provided between the at least one sealing element and the first backup ring. A first seal ring may be provided in the first ring space.

Abstract: A frac plug for use in a wellbore includes an upper mandrel with an axis extending therethrough and a lower mandrel that moves axially along the axis and towards the upper mandrel. The frac plug further includes a sealing element and a grip ring that move radially outward from the axis and into engagement with the wellbore. The grip ring includes a first gripping element positioned at a first rake angle with respect to the axis to prevent upward movement of the grip ring with respect to the wellbore when in gripping engagement with the wellbore, and a second gripping element positioned at a second rake angle with respect to the axis that is different from the first rake angle to prevent downward movement of the grip ring with respect to the wellbore when in gripping engagement with the wellbore.

Abstract: A well tool for cementing a portion of a well includes a cement retainer assembly and a capsule connected to the cement retainer assembly. The cement retainer assembly is configured to be disposed within a wellbore, and includes a ported sub and a cement retainer. The ported sub includes a port to flow cement out of the cement retainer assembly and into an annulus of the wellbore. The capsule includes a body defining an interior chamber of the capsule, where the interior chamber is configured to retain a fluid, and the capsule is configured to be disposed at a location within the wellbore and downhole of the cement retainer assembly.

Abstract: A dissolvable, variable-diameter metal sealing and fracturing bridge plug includes a conical body internally provided with an axial hollow passage; a central connection shaft inserted into the hollow passage of the conical body; a slip movably installed on an external conical surface of the conical body; a tail base internally provided with two adjacent internal thread sections orderly reduced in diameter; a variable-diameter sealing ring made from a dissolvable metal and installed on a side of the slip that is close to the bottom of the conical body; and a variable-diameter supporting ring made from a dissolvable metal and installed between the variable-diameter sealing ring and the slip.

Abstract: A drill string has a first part and a second part closer to a top of the well. The first part has a drilling head and an annular barrier with a tubular metal part, an expandable metal sleeve and an annular space between the inner face of the expandable metal sleeve and the tubular metal part. Drilling is commenced and then stopped when a loss of formation pressure is detected. A ball is dropped into the drill string and the drill string is pressurized. The expandable metal sleeve is expanded with pressure until the expandable metal sleeve abuts the inner face of the borehole. The second part of the drill string is separated from the first part and pulled out of the borehole. Cement is injected into the borehole above the first part to provide a cement plug above the first part.

Abstract: The present invention is a retrievable back pressure valve device and method of using the same that may be placed in tubing during well completion and retrieved as desired by dropping a ball down hole, which then interacts with the valve to shear the positioning points allowing for retrieval as the valve is allowed to move up the well to be removed from same.

Abstract: A sand control screen assembly includes a base pipe and a flow control device positioned within a flow path for a fluid that extends between the exterior and the interior of the base pipe. The flow control device includes a housing defining an inlet that receives the fluid from the flow path and an outlet that discharges the fluid back into the flow path, and a piston chamber is defined in the housing to fluidly communicate the inlet with the outlet. A pressure-balanced piston is positioned within the piston chamber and movable between a first position, where fluid flow between the inlet and the outlet is prevented, and a second position, where fluid flow between the inlet and the outlet is facilitated. An actuator moves the pressure-balanced piston between the closed and open positions, and an electronics module is communicably coupled to the flow control device to operate the actuator.

Abstract: A valve includes a piston, a flow tube, and a coupling transferring longitudinal movement between the piston and flow tube and enabling rotational movement of the flow tube with respect to the piston. The coupling includes a connector and a thrust sleeve. The connector includes a piston attachment feature and a thrust sleeve attachment feature, the piston attachment feature attached to the piston. The thrust sleeve includes a pocket, the thrust sleeve attachment feature disposed within the pocket. The thrust sleeve includes portions disposed radially interiorly and radially exteriorly of the thrust sleeve attachment feature.

Abstract: The present invention relates to an intelligent switching valve for reservoir reformation and production monitoring and control. The intelligent switching valve comprises a connection short section, an electric short section, a fluid storage short section, a hydraulic control short section and a slide sleeve short section. The middle part of the intelligent switching valve is a full bore. In a working process, a casing coupling and a casing are connected and are mounted under the shaft as components of a well cementation casing. Wireless communication with ground equipment is realized through low-frequency electromagnetic waves to finish receiving/transmitting of working instructions and data. The switching valve is opened and closed under electric and hydraulic control and external assisting is not needed in an opening or closing process. The number of times of opening and closing is not limited and the number of stages is not limited.

Abstract: A magnetic pulse actuation arrangement configured for use in a downhole system, the arrangement including: a workpiece; a layer placed on a portion of the workpiece, the layer having a different magnetic permeability than the workpiece; and, an inductor including a coil and configured to deliver a magnetic pulse to the workpiece to urge the workpiece in a direction, the layer facing the coil.

Abstract: In accordance with embodiments of the present disclosure, a methodology may be used to computationally simulate a system of equations relating to the junction points of a dynamic fracture network (DFN). The simulation may utilize one or more efficient algorithms to perform a realistic, physically conservative, and stable coupled simulation of the DFN's complex flows. These algorithms may use assumptions based on the transient Navier-Stokes equations to perform the proppant laden flow simulation. As described in detail below, the algorithms may utilize a numerical methodology that accurately simulates a junction system of equations arising from solving the fluid and proppant flows inside individual fractures based on Navier-Stokes equations along with a proppant transport equation.

Abstract: An apparatus can include a filter element that is positionable in a tubing string. The filter element can have a closed end and an open end. A plurality of slots can extend generally radially from the closed end to the open end of the filter element along a length of the filter element.

Abstract: Provided is an improved bypass durable dart plunger that descends faster in a hydrocarbon well, is capable of lifting more fluids and has a durable and replaceable clutch assembly. The various components of the durable dart plunger includes a sleeve, a dart body with a one or more flow ports (chokes) cut at right angles through the dart body, a pin and a replaceable clutch assembly (also referred to a retention assembly). The chokes can be of varying sizes. In one embodiment, the clutch assembly includes a plurality of clutch mechanisms wherein each mechanism includes a ball, a socket screw and a resilient spacer.

Abstract: Methods and systems for lifting wellbore fluids in a subterranean well towards a surface include providing a closed water system free of fluid communication with the wellbore fluids, the closed water system having a water storage tank located outside of a high temperature zone of the subterranean well. Water from the water storage tank is circulated into the high temperature zone of the subterranean well to form a steam. A downhole steam turbine is rotated by the steam to drive a submersible pump system in fluid communication with the wellbore fluids and the wellbore fluids are lifted towards the surface with the submersible pump system. The steam exiting from the steam turbine is directed towards the water storage tank.

Abstract: The disclosure herein includes a peristaltic pump assembly for pumping wellbore fluid, which peristaltic pump assembly may include: a pump; a housing having a chamber; a conduit coupled to the pump and the housing, wherein fluid may be capable of ingress into the conduit from the chamber or egress from the conduit into the chamber; and a hose having a portion disposed in the chamber, wherein the portion may be capable of being compressed by fluid disposed in the chamber.

Abstract: A method of producing hydrocarbon resources from a subterranean formation may include heating the subterranean formation with at least one radio frequency (RF) antenna located in an upper well within the subterranean formation. The method may further include producing hydrocarbon resources from a lower well within the heated subterranean formation and vertically beneath the upper well to create a void within the subterranean formation, and injecting a solvent into the void within the heated subterranean formation from the lower well.

Abstract: Systems and methods for positioning horizontal wells within a limited-pre-defined boundary. The systems and methods include an automated process for creating jointed target pairs or horizontal laterals to be utilized for planning horizontal wells in order to position the horizontal laterals within limited pre-defined boundary(ies).

Abstract: Apparatus, systems, and methods for controlling activities on a drilling rig are described. The methods include installing a control system operably coupled to the drilling rig and having a user interface, receiving operational guidelines from the user interface that include a plurality of control limits associated with operational parameters of the rig, monitoring current values of the operational parameters, and automatically applying the control limits to the operational parameters during operation of the rig.

Abstract: A method can include receiving at least one metric; analyzing options associated with implementation of at least a portion of a well plan with respect to the at least one metric; implementing one of the options; receiving information via a wellsite system during implementation of the one of the options; adjusting the one of the options based at least in part on the information to provide an adjusted option; and implementing the adjusted option.

Abstract: A downhole communication tool is provided. The downhole communication tool may include a cylindrical housing, a plurality of ridges, and a plurality of flow control assemblies. The cylindrical housing may have an inner surface, a first end portion, and a second end portion. The inner surface may define a flowbore extending axially between the first and second end portions. The plurality of ridges may extend radially outward from the cylindrical housing between the first and second end portions. Each ridge may have a ridge outer surface and define one or more ports that extend radially between the flowbore and the ridge outer surface. Each flow control assembly may be mounted about a respective port of the one or more ports and include a dissolvable seal member extending across the respective port. Each dissolvable seal member may be configured to prevent fluid communication between the flowbore and a subterranean formation.

Abstract: A wellbore ranging system includes a processor, a memory, and a wellbore ranging module. The wellbore ranging module is operable to receive survey information in response to a survey measurement signal and determine a location of a first wellbore in a formation. The wellbore ranging module is further operable to receive first ranging information in response to a first ranging measurement signal and determine, based on the first ranging information, a location of a second wellbore in the formation and a second wellbore location error associated with the determined location of the second wellbore in the formation. The wellbore ranging module is also operable to determine, using the location of the first wellbore, the location of the second wellbore, and the second wellbore location error, a next location at which to send a second ranging measurement signal.

Abstract: The present disclosure relates to a system and program for predicting shearing by fluid pressure, the system and program capable of predicting shearing information such as the minimum pressure Pcm required for hydraulic shearing, the sufficient pressure Pco for hydraulic shearing, and the optimal shearing direction using input information including the vertical stress ?v, the maximum horizontal stress and the minimum horizontal stress of a rock to which fluid is to be injected, a joint friction angle ?, a reservoir rock density ?r, an injected fluid density, and a coefficient of the sufficient pressure for hydraulic shearing ?.

Abstract: A modular sensor system using electro acoustic technology to measure downhole properties, such as flow rate, density and fluid fraction of oil in a production string, is described. Modular sensor assemblies inside a wellbore collect various local fluid parameters at each location. The local fluid parameters are combined to determine the downhole properties.

Abstract: A communication method is provided for a communication system comprising a transmitter and a receiver. The method involves communicating data from the transmitter to the receiver over a banded communication channel. The method comprises: applying a forward error correction, FEC, code to data to be transmitted to obtain FEC-encoded data; assigning the FEC-encoded data into a plurality of sub-channels; modulating the data from each of the plurality of sub-channels into a corresponding one of a plurality of sub-bands, the plurality of sub-bands having spaced apart center frequencies; and concurrently transmitting the data from the plurality of sub-bands onto a banded communication channel, the banded communication channel comprising one or more pass-bands and one or more stop-bands.

Abstract: Embodiments generally relate to a measuring instrument. The measuring instrument may comprise: a sensor to measure a property of the local environment; a mechanism configured to cause the sensor to move along a predetermined path relative to a fixed reference frame of the instrument; and a signal processing system configured to receive a processor sensor signal generated by the sensor, perform a Fourier transform on the sensor signal to identify frequency components of the sensor signal, and compare the frequency components of the sensor signal with frequency components associated with the predetermined path to determine a measurement of the property of the local environment. The mechanism may comprise a first member having a first axis and a second axis that is different from the first axis. The mechanism may be configured to cause the first member and the sensor to rotate about the first axis, and to cause the sensor to rotate about the second axis. The sensor may be spatially offset from the first axis.

Abstract: A downhole tool designed to be disposed in a borehole of a subterranean formation is provided. The downhole tool includes a probe used to interface with the subterranean formation in order to sample fluid from or to inject fluid into the subterranean formation. The downhole tool also includes a sample flowline fluidly coupled to the probe and used to direct fluid through the downhole tool. The downhole tool further includes at least two volume chambers. These volume chambers each include a first side fluidly coupled to the sample flowline, a second side fluidly coupled to the guard flowline, and a piston separating the first side from the second side. The downhole tool is able to control a flow of fluid from a high pressure environment to a low pressure environment via the at least two volume chambers, the sample flowline, and the guard flowline.

Abstract: The invention provides a method for efficiently adjusting existing landfill gas well head control devices in a manner which reduces the overall air migration into the landfill's gas collection systems in a short period of time. The method also provides for mapping out hydrogen sulfide concentration areas of landfills; allowing for efficient evaluation and selective reduction of hydrogen sulfide.

Abstract: A cutting device for engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plurality of cutting bits positioned on a peripheral edge. The peripheral edge of each peripheral portion is aligned with the peripheral edges of adjacent peripheral portions.

Abstract: Disclosed is a rock bolt installation tool for installation of a rock bolt assembly into a predrilled rock hole. The tool includes a drive shaft having a proximal end, which is adapted to engage with a drill rig, and a distal end. A socket in the distal end includes a first containment portion, of a first diameter, which has a base and a second containment portion, of a second diameter, between the first containment portion and the second end. The first containment portion is adapted to receive a nut of the rock bolt assembly. The second containment portion is adapted to receive a load-indicator of the rock bolt assembly. The base and the second end are adapted to provide surfaces against which the nut and a spherical seat of the rock bolt assembly respectively engage to be driven into the rock hole.

Abstract: A gas passage switching structure for a pneumatic rotary hand tool includes a pneumatic motor and a revolving valve disposed in a device case. The pneumatic motor has an input ending surface. A forward gas inlet and a reverse gas inlet are formed and spaced apart on the input ending surface. The revolving valve has a gas supply surface. A gas supply port and a discharge port are formed and spaced apart on the gas supply surface. The gas supply surface and the input ending surface are arranged along an axis line in the device case adjacent or in contact with the arrangement so that it allows the pneumatic motor to drive the forward and reverse rotation by the high pressure air flow along the fluid passage in the axis line direction.

Abstract: A boundary layer turbine having a housing with an inlet that receives pressurized fluid, a rotatable shaft extending through the housing, nested cylindrical tubes of progressively wider diameter connected coaxially about the shaft wherein adjacent tubes define a cylindrical fluid passageway there-between that is in fluid communication with the inlet and an outlet, and at least one nozzle coupled to the inlet configured to direct the flow of fluid from the inlet into the plurality of passageways and against the plurality of tubes at an angle to a normal plane to the curvature of the plurality of tubes and at an angle to the longitudinal axis of the shaft, wherein the angled flow of fluid imparts rotation to the plurality of tubes and the shaft and flows towards the outlet where the fluid is discharged, and wherein the rotating shaft may be used to provide kinetic energy.

Abstract: Embodiments of the invention relate generally to rotary machines and, more particularly, to the control of wheel space purge air in gas turbines. In one embodiment, the invention provides a turbine bucket comprising: a platform portion; an airfoil extending radially outward from the platform portion; a shank portion extending radially inward from the platform portion; an angel wing extending axially from a face of the shank portion; and a plurality of voids disposed along a length of the angel wing, each of the plurality of voids extending radially through the angel wing.

Abstract: A blade for a turbomachine bladed wheel, the blade comprising a root, an airfoil, and a tip. The root and the tip have respective platforms, each presenting a surface on a side toward the airfoil, which surfaces are referred to respectively as the root platform wall and the tip platform wall. Each of these platform walls is constituted by a pressure side portion and a suction side portion meeting at a crest curve.

Abstract: An airfoil includes a cooling air passage for receiving a cooling air flow. A chevron including a first rib and a second rib extends from a common tip is disposed within the cooling passage for generating a turbulent flow to improve heat transfer. The chevron includes an angle between the first rib and the second rib that is greater than 90 degrees.

Abstract: In a featured embodiment, a gas turbine engine component comprises an airfoil having a leading edge, a trailing edge, and pressure and suction side walls extending from the leading edge to the trailing edge. The airfoil extends from a base to a tip. A shelf is formed in the tip, and extends from the pressure side wall, around the leading edge, to the suction side wall.

Abstract: An airfoil cooling system may be provided. An airfoil may have a pressure side and a suction side that are separated by a leading edge. The leading edge may pass through a stagnation point of the airfoil. A spar may have an outer surface comprising standoffs. The standoffs may define a cooling channel that extends across the leading edge on the outer surface of the spar, from the pressure side to the suction side. The cooling channel may have a first portion and a second portion defined by the standoffs. The first portion may be located closer to a base or a tip of the airfoil than the second portion. The spar may further comprise an inlet on the pressure side or the suction side. The inlet may be configured to convey a cooling fluid from a passageway located inside of the spar to the cooling channel.

Abstract: A blade has a flow passage forming plate that defines a part of a combustion gas flow passage. The flow passage forming plate has a plurality of back channels that open in a back end surface. A density of openings of the plurality of back channels in a middle region of the back end surface is higher than the density of openings of the plurality of back channels in at least one side region of a suction-side region and a pressure-side region of the back end surface. The density of openings is a ratio of a length of wetted perimeter of the plurality of back channels to an interval of openings of the plurality of back channels.

Abstract: Airfoil bodies having a first core cavity and a second core cavity adjacent each other, with the second core cavity defined by a first cavity wall, a second cavity wall, a first exterior wall, and a second exterior wall. The first cavity wall is located between the second core cavity and the first core cavity and the first and second exterior walls are exterior walls of the airfoil body. The first cavity wall includes a first surface angled toward the first exterior wall and a second surface angled toward the second exterior wall. At least one first cavity impingement hole is formed within the first surface with a first impingement flow flowing from the first core cavity through the at least one first cavity impingement hole to impinge upon the first exterior wall and forms a first high momentum jet of impingement air thereon.

Abstract: Airfoils bodies having a first core cavity and a second core cavity located within the airfoil body that is adjacent the first core cavity. The second core cavity is defined by a first cavity wall, a second cavity wall, a first exterior wall, and a second exterior wall, wherein the first cavity wall is located between the second core cavity and the first core cavity and the first and second exterior walls are exterior walls of the airfoil body. The first cavity wall includes a first surface angled toward the first exterior wall and a second surface angled toward the second exterior wall. At least one first cavity impingement hole is formed within the first surface and a central ridge extends into the second core cavity from at least one of the first cavity wall and the second wall and divides the second core cavity into a two-vortex chamber.

Abstract: An airfoil includes pressure and suction side walls that extend in a chord-wise direction between leading and trailing edges. The pressure and suction side walls extend in a radial direction to provide an exterior airfoil surface. A core cooling passage is arranged between the pressure and suction walls in a thickness direction and extends radially toward a tip. A skin passage is arranged in one of the pressure and suction side walls to form a hot side wall and a cold side wall. The hot side wall defines a portion of the exterior airfoil surface and the cold side wall defines a portion of the core passage. The core passage and the skin passage are configured to have a same direction of fluid flow. A slot extends longitudinally in the skin passage. A resupply hole fluidly interconnects the core passage and the slot.

Abstract: A power generator for generating power using a liquid that can alternatively flow at a lower flow rate and at a higher flow rate. The power generator includes a conduit and a rotor mounted in the conduit so as to be rotatable about a rotation axis. The rotor includes a top set of blades provided in a conduit top portion and configured for rotating about the rotation axis when the liquid flows at the higher flow rate in the conduit. The rotor also includes a bottom set of blades provided in a conduit bottom portion and configured for rotating about the rotation axis when the liquid flows at the lower flow rate in the conduit. An output shaft protrudes from the conduit and is rotatable by at least one of the top and bottom sets of blades. The top and bottom blades have different configurations.

Abstract: A rotatable body includes a rotor and n buckets, each bucket being coupled to the rotor in a tangential entry manner. The rotor supports each of the n buckets coupled to the rotor, so the buckets may be stably coupled to the rotor, using a unified annular dovetail tenon that protrudes axially from the rotor. Each bucket includes a bucket dovetail mortise for engaging with the unified annular dovetail tenon in order to couple the bucket to the rotor. A method of manufacturing the rotatable body includes assembling first to (n?1)th buckets with the rotor wheel by successively inserting the first to (n?1)th buckets through the tangential entry; assembling the nth bucket with the adapter; assembling the adapter with the rotor wheel, by inserting the adapter assembled with the nth bucket into the tangential entry; and collectively moving all the buckets by one half pitch in the circumferential direction.

Abstract: A rotatable body includes a rotor and n buckets, each bucket being coupled to the rotor in a tangential entry manner. The rotor supports each of the n buckets coupled to the rotor, so the buckets may be stably coupled to the rotor, using a unified annular dovetail tenon that protrudes axially from the rotor. Each bucket includes a bucket dovetail mortise for engaging with the unified annular dovetail tenon in order to couple the bucket to the rotor. A method of manufacturing the rotatable body includes assembling first to (n?1)th buckets with the rotor wheel by successively inserting the first to (n?1)th buckets through the tangential entry; assembling the nth bucket with the adapter; assembling the adapter with the rotor wheel, by inserting the adapter assembled with the nth bucket into the tangential entry; and collectively moving all the buckets by one half pitch in the circumferential direction.

Abstract: A rotary machine satisfies at least one of Dr1<Dh1?Dr2 or Dc1?Dt1>Dc2. Dr1, Dh1, Dr2, Dc1, Dt1, and Dc2 are distances from a rotational center axis of a hub to an upstream end of a first blade-facing surface facing a hub-side end surface of a variable blade, an upstream end of the hub-side end surface when the blade angle is maximum, a downstream end of a first outer peripheral surface adjacent to an upstream side of the blade-facing surface, an upstream end of a second blade-facing surface facing a tip-side end surface of the variable blade, an upstream end of the tip-side end surface when the blade angle is minimum, and a downstream end of a first inner peripheral surface adjacent to an upstream side of the second blade-facing surface, respectively.

Abstract: Turbine nozzle sections and airfoils having trailing edge segments are provided. In one embodiment, a turbine nozzle section comprises an inner band defining a pocket; an outer band defining an opening therethrough; and an airfoil radially extending from the inner band to the outer band and including pressure and suction sides. The airfoil has a body segment including a cavity and a plurality of ejector apertures defining a passageway from the cavity to an outer surface of the airfoil, and a trailing edge segment including an inner end and an outer end. The body segment defines a projection projecting inwardly from the suction side, and the trailing edge segment defines a notch opening toward the suction side. The projection is received within the notch. The inner end of the trailing edge segment is received within the inner band pocket, and the outer end is positioned within the outer band opening.

Abstract: Aspects of the disclosure are directed to an apparatus comprising a first section, and a second section coupled to the first section, wherein the second section is configured to substantially coincide with an edge of a seal and includes a pre-tapered edge.

Abstract: An inner ring according to the invention for a guide vane cascade of a turbomachine has a radially outer inner ring surface as well as a plurality of bearing mounts for a respective guide vane plate of a guide vane. The bearing mounts each have an opening in the outer inner ring surface as well as a bottom face lying radially opposite the opening. At least two of the bearing mounts are separated from each other by a separating wall and are connected to each other in a region of their bottom face by a through-opening. A guide vane cascade according to the invention for a turbomachine has an inner ring according to the invention and a plurality of guide vanes inserted into the bearing mounts.

Abstract: A turbomachine and a method of operating the turbomachine are disclosed. The turbomachine includes a stator, a rotor including a rotor bearing face, and a face seal assembly including a first segmented seal ring and a second segmented seal ring. The first segmented seal ring includes a plurality of joints and a first flat-contact surface and the second segmented seal ring includes a plurality of segment ends and a second flat-contact surface. One of the first and second segmented seal rings includes a seal bearing face. The second segmented seal ring is coupled to the first segmented seal ring such that the second flat-contact surface is in contact with the first flat-contact surface. The plurality of segment ends is circumferentially offset from the plurality of joints. The first segmented seal ring is slidably coupled to the stator and defines a face seal clearance between the rotor and seal bearing faces.

Abstract: A seal assembly includes first and second rings. The first ring includes a first outer ring, a first beam connected to the first outer ring, and a first shoe. The first shoe includes free and fixed ends and is configured to move radially. The second seal ring is disposed axially adjacent and is attached to the first seal ring. The second seal ring includes a second outer ring, a second beam connected to the second outer ring, and a second shoe. The second shoe includes free and fixed ends and is configured to move in a generally radial direction. The free end of the second shoe is disposed axially adjacent to the fixed end of the first shoe. The fixed end of the second shoe is disposed axially adjacent to the free end of the first shoe.

Abstract: A turbine ring assembly includes both a plurality of ring sectors made of ceramic matrix composite material forming a turbine ring and also a ring support structure having first and second annular flanges, each ring sector having first and second tabs, the tabs of each ring sector being held between the two annular flanges of the ring support structure. Each of the first and second tabs of the ring sectors has an annular groove. Each of the first and second annular flanges of the ring support structure has an annular projection received respectively in the annular groove of the first tab or in the annular groove of the second tab of each ring sector. A resilient element is interposed between the annular projection of the first flange and the annular grooves of the first tabs, and also between the annular projection of the second flange and the annular grooves of the second tabs.