Abstract: A fully disintegrating plug has a passage therethrough and a ball seat at an upper end. The seal material that comprises plastic nuggets, sand and a grease binder is initially disposed behind a protective sleeve. A wireline setting tool creates relative movement between a plunger and a mandrel body that has a ramp surface adjacent the outlet of the protective sleeve. The sleeve outlet is closed for running in but plunger movement pushes the seal material so as to displace the closure at the sleeve outlet with the seal material that is forced up the mandrel ramp surface and against the surrounding tubular. After an object is landed on the mandrel seat and the treating is concluded, the plug components are caused to disintegrate or otherwise fail for complete removal. Multiple plugs are contemplated for fracturing or other treating applications.

Abstract: A wellbore cementing tool configured for placement in a wellbore or in a drill string, and method of using same. The tool comprises a body having upper and lower members connected by a shear component. A rod is connected to the upper member, and the tool can be lowered with the rod into the wellbore or drill string to a desired depth. At the desired depth, locking means are deployed to lock the tool in position, the tool is sealed, and cement can be injected through the tool to the annulus of the outer casing. In some embodiments the tool is locked using a pushing motion that extends locking members outwardly from the tool to engage the wellbore walls or the inner surfaces of the drill string. Once cementing is completed, the rod is pulled from surface thereby causing the shear component to rupture and the upper and lower members to disconnect, and the upper member can be drawn to surface leaving the rest of the tool downhole.

Abstract: A fluid pulse valve and a method of using the fluid pulse valve are disclosed. The fluid pulse valve comprises an outer housing, a rotor contained within the outer housing, a stator tube surrounding the rotor and adjacent to the outer housing, the stator tube comprising a plurality of slots, and a closer coaxially and rotationally coupled to the rotor and at least a portion of the closer in line with the plurality of slots. As the closer rotates, the closer covers and uncovers the plurality of slots to create a pulse.

Abstract: A distributed combined cooling, heating and power energy system for gas extraction in a coal mining area, which belongs to an energy system for gas production.

Abstract: The invention provides a system and process for providing a clean, non-contaminating process, for producing fracturing of shale, limestone, sands and other geological and mining formations to release natural gas, oil and minerals within a formation. A system used in the process produces on site the energy required to induce fracturing, removing natural gas and oil, and to recycle fluids used in fracturing for additional use. Removable storage provides the necessary materials to provide fracturing, removal and processing of the fracturing liquids for addition use at one or more sites, and to provide processing, storage and transportation of the resulting natural gas and oil.

Abstract: An underbalance pressure generator includes a housing having a first end and a second end and defines a piston chamber that extends between the first and second ends. A piston is movably arranged within the piston chamber, and one or more influx ports are defined in the housing at or near the second to enable fluid communication between the piston chamber and an exterior of the housing. A locking mechanism is arranged at or near the second end and capable of securing the piston at or near the second end.

Abstract: An apparatus for collecting fluids into a reservoir, wherein the reservoir is floating on a body of water and has an opening in the bottom of the reservoir through which the fluids, such as petro-based products, arrive flowing upward from a submersible structure, such as a riser from a fluid source. The reservoir has a canopy and mechanism connected to the rim of the side walls of the reservoir allowing the canopy to pivot. The pivoting canopy and mechanism attached along the rim of the reservoir restrains the fluids contained inside from spilling over the rim into the body of water, say an ocean, and also restrains the ocean waters from spilling over into the reservoir containing the fluids. The reservoir can be used as a temporary holding vessel for the fluids, whereby the fluids can then be vacuumed into a drillship.

Abstract: A method includes disconnecting subsea equipment containing a first fluid from an installation in a subsea environment, wherein the first fluid is a produced fluid that includes produced hydrocarbons. Furthermore, the method also includes raising the disconnected subsea equipment from the subsea environment and controlling a fluid pressure of the first fluid in the subsea equipment with an accumulator device while raising the subsea equipment from the subsea environment, wherein the accumulator device includes first and second adjustable accumulator chambers and a movable pressure boundary separating the first and second adjustable accumulator chambers.

Abstract: Wellbore assembly for injecting fluid into a subsurface formation having multiple intervals comprising a plurality of packers having bypass channels at desired locations between the respective intervals. The assembly allows fluid to be injected down a tubing string, back up an annular region, and through the series of packers to impart incremental pressure drops along the intervals. The assembly enhances pressure support by allowing the operator to optimize wellbore injection along intervals having different formation characteristics.

Abstract: A well screen assembly includes an elongate base pipe, a shroud layer about the base pipe, and a mesh layer between the shroud layer and the base pipe. A portion of the mesh layer overlaps another portion of the mesh layer to form an area of overlap. A spine is positioned proximate substantially an entire length of the area of overlap, and transmits a force from the shroud layer to the mesh layer that compresses and seals the area of overlap against passage of particulate.

Abstract: A non-ballistic tubular perforating system includes a tubular having a wall with perforations therethrough and at least one radially extendable member positioned radially of the perforations configured to displace cement radially of the tubular and configured to radially extend prior to pumping of the cement.

Abstract: A process for isolating one or more segments of a gravel packed well from other segments to treat the isolated segments and easily re-establish flow from the other segments after the treatment is described. The treatment includes techniques for enhancing or permanently blocking production from the isolated segment. The process includes the installation of a removable sealing element and a permeability poison that forms a fluid seal to prevent longitudinal fluid flow along the annular production space outside the tubular production pipe. With wireline or other low-cost wellbore workover systems, access is re-engaged with the secluded formation including removal of plugs and fluid seals within the tubular production pipe.

Abstract: A valve apparatus capable of withstanding high pressures and techniques for using this apparatus in various suitable applications are provided. The valve apparatus typically includes both an upper bellows comprising a standard, convoluted bellows and a lower bellows comprising an edge-welded bellows. The valve apparatus may also include a floating, constant volume fluid chamber that travels with the lower edge-welded bellows as the lower bellows compresses and expands in an effort to protect the lower bellows from very high internal volume fluid pressure.

Abstract: Methods and apparatus for removing oil or natural gas from the ground may include, for example, reforming a fuel source by reaction with water to generate driver gas, and injecting the driver gas into the oil well. The reforming operation may include causing the combustion of a combustible material with ambient oxygen for the release of energy; and heating a reforming reaction fuel and water sources, with the energy released from the combustion of the combustible material, to a temperature above that required for the reforming reaction wherein the fuel and water sources are reformed into driver gas. In one example, the amount of the combustible material combusted is sufficient to result in the release of enough energy to heat an amount of the reforming reaction fuel and water sources to the temperature above that required for the reforming reaction to proceed. The driver gas may be used to help extract oil from the ground and especially oil from depleted oil wells.

Abstract: The present invention is an in-situ apparatus for generating carbon dioxide gas at an oil site for use in enhanced oil recovery (EOR). The apparatus includes a steam generator adapted to boil and superheat water to generate a source of superheated steam, as well as a source of essentially pure oxygen. The apparatus also includes a steam reformer adapted to react a carbonaceous material with the superheated steam and the pure oxygen, in an absence of air, to generate a driver gas comprising primarily carbon dioxide gas and hydrogen gas. A separator is adapted to separate at least a portion of the carbon dioxide gas from the rest of the driver gas to generate a carbon dioxide-rich driver gas and a hydrogen-rich fuel gas. A compressor is used for compressing the carbon dioxide-rich driver gas for use in enhanced oil recovery, and the compressed carbon dioxide-rich driver gas, with substantially no oxygen, is injected to a predetermined depth in order to enhance oil recovery at the oil site.

Abstract: Embodiments of the present invention relate to heater patterns and related methods of producing hydrocarbon fluids from a subsurface hydrocarbon-containing formation (for example, an oil shale formation) where a heater cell may be divided into nested inner and outer zones. Production wells may be located within one or both zones. In the smaller inner zone, heaters may be arranged at a relatively high spatial density while in the larger surrounding outer zone, a heater spatial density may be significantly lower. Due to the higher heater density, a rate of temperature increase in the smaller inner zone of the subsurface exceeds that of the larger outer zone, and a rate of hydrocarbon fluid production ramps up faster in the inner zone than in the outer zone. In some embodiments, a ratio between a half-maximum sustained production time and a half-maximum rise time of a hydrocarbon fluid production function is relatively large.

Abstract: A modular, adjustable system for distributing fluids to one or more wellbores includes a plurality of modules that can be arranged at a well site to create an appropriate manifold to enable selective fluid communication between a fluid pumping system and the one or more wellbores. The modules each include a fluid inlet, a fluid outlet and a valve coupled therebetween to selectively permit or restrict fluid flow between the respective fluid inlets and fluid outlets. The modules are configured to be readily maneuvered, coupled and locked to one another at a well site.

Abstract: The subject matter of this specification is directed to a method that includes providing an outer tubular member having a bore with an inner surface, applying a lubricant layer to at least a portion of the inner surface of the outer tubular member, and positioning the outer tubular member in at least a portion of the wellbore. During the drilling process, mechanical wear between the outer and inner members can be measured by an indicator to determine if the measured indicator exceeds a predetermined threshold level.

Abstract: An apparatus for mitigation of torsional noise effects on borehole measurements. The apparatus may include a conveyance device; a sleeve having a sensor section, the sleeve rotatably disposed on the conveyance device; a sensor having at least one component disposed on the sensor section; and a driver coupled to the conveyance device and configured to rotate at least the sleeve sensor section. The driver may rotate the sleeve sensor section independent of the conveyance device. The driver may rotate the sleeve sensor section at a preset substantially constant rotational speed. The sleeve may include at least one arm configured to selectively lock the sleeve to a surface in the borehole. The driver may rotate the sleeve sensor section during measurement by the sensor. The driver may selectively couple the sleeve.

Abstract: An example method for distributed sensing in a subterranean formation may include drilling to a first depth in the subterranean formation using a drilling device and detaching a first phase of the drilling device at the first depth. The first phase may include a first coil of line and a first sensor. The drilling assembly may drill to a second depth and decouple a second phase of the drilling device, with the second phase including a second coil of line and a second sensor. Measurements may be generated at the first and second depths using the first and second sensors, respectively.

Abstract: A method of projection a production characteristic includes receiving down well video image data depicting multiphase flow within the well, determining a flow rate data of at least one phase of the multiphase flow based on the down well video image data, and projecting the production characteristic based at least in part on the determined flow rate using a well performance model.

Abstract: A formation tester tool can include a longitudinal probe drill collar having a surface, a formation probe assembly located within the probe drill collar, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the probe drill collar surface, the piston being slidingly retained within a chamber, a seal pad located at an end of the piston, the seal pad including an outer surface defining a partial cylindrical surface. The piston includes an outer surface having non-circular cross-sectional shape and the chamber includes an inner surface having a non-circular shape similar to the shape of the piston outer surface. The formation tester tool can include interchangeable draw down assemblies and a flow bore having a curving path.

Abstract: An intelligent test system and a method for a multi-segment fractured horizontal well. The intelligent test method for a multi-segment fractured horizontal well comprises: step A: placing a test tubular column into an underground horizontal section; step B: setting a pressure building packer and a hanging packer by means of pressurization after the test tubular column is placed into an underground designed position; step C: breaking a hydraulic release connector to separate the hydraulic release connector from a seal pipe; step D: pulling out a first oil pipe, and reserving the tubular column comprising the seal pipe and located on the downstream part of the seal pipe in a horizontal well; and step E: placing a production tubular column or a communications tubular column into a vertical section of the horizontal well.

Abstract: A method is for determining the position of a lower portion of a drill string in a bore hole. The drill string comprises a number of drill string components, each drill string component being interconnected by means of at least one joint. Several ultrasonic sensors are arranged after each other along a drill string. The method comprises localizing the position of the chamfer of the joint relative to the ultrasonic sensors.

Abstract: A system and method for locating a bottom hole assembly during liner drilling. The system and method employ a liner and a drill string. The liner may include a stop sub. The drill string may include a bottom hole assembly position indicator. In one or more embodiments, the bottom hole assembly position indicator is configured to engage the stop sub and arrest further advancement of the drill string.

Abstract: A system, method and computer-readable medium for monitoring a fluid injection at a downhole location in a wellbore is disclosed. A member is provided in the wellbore. The member includes a passage for flow of fluid and a fiber optic cable including a plurality of temperature sensitive sensors wrapped around the member. A selected temperature signal is imparted into the fluid flowing in the member. A temperature of the fluid exiting the member at the downhole location is measured using the plurality of temperature sensors. The measured temperature and the imparted temperature signal are compared to determine a flow parameter of the injected fluid.

Abstract: A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Abstract: Acoustic data acquired in a MWD/LWD system can be compressed for transmission to the surface. The compression technique can include semblance processing acoustic signals received at a plurality of receivers spaced apart from a transmitter to generate a semblance projection at each of a plurality of depths. Peaks of the semblance projection can then be telemetered to the surface, with each peak including a slowness (velocity) value and a coherence (semblance) value. The telemetered values may be processed at the surface to generate logs as a function of depth.

Abstract: The present disclosure is directed at a method and system for determining relative depth of an acoustic event within a wellbore. The method includes obtaining two acoustic signals at two different and known depths in the wellbore, in which each of the acoustic signals includes the acoustic event; dividing each of the acoustic signals into windows; determining cross-correlations of pairs of the windows, in which each of the pairs includes one window from one of the acoustic signals and another window from the other of the acoustic signals that at least partially overlap each other in time; and determining the relative depth of the acoustic event relative to the two known depths from the cross-correlations. The acoustic event may represent, for example, fluid flowing from formation into the wellbore (or vice-versa) or fluid flowing across any casing or tubing located within the wellbore.

Abstract: A cutting pick tool including a cemented carbide support body that mounts a diamond composite cutting tip. The support body includes a recess having a conical region that mounts a complementary conical shaped mount portion of the tip. The components are brazed together to provide a secure and robust cutting tip region.

Abstract: A pin retaining assembly for an advancing ram includes a retention plate and a retainer. The retention plate includes two oppositely facing surfaces and a channel with a notch between the two surfaces. The retainer includes a main body, a pin receiving slot, and at least two flanges. The main body is configured to slide into the notch of the channel and extend through a surface of the retention plate. The pin receiving slot has an open mouth through an end of the main body. A first flange extends from one end of the main body along a surface of retention plate and a second flange extends from another end of the main body along another surface of retention plate. The flanges retain the main body of the retainer in the first notch from moving in a direction defined by a longitudinal axis of the pin receiving slot.

Abstract: A radial inflow turbine may include a wheel, a first set of nozzle vanes surrounding the wheel and a second set of nozzle vanes surrounding the wheel. A first circumferential spacing between two adjacent nozzle vanes of the first set may differ from a second circumferential spacing between another two of the nozzle vanes of the first set.

Abstract: A bladed rotor for a turbomachine, in particular a gas turbine, having a plurality of blades distributed around the circumference thereof; the blade distribution being made up of a natural-number sector count of first angular sectors and second angular sectors; a first blade count of first blades being arranged in the first angular sectors, and a second blade count of second blades being arranged in the second angular sectors, said second blade count being different from said first blade count; and the sector count being odd (Z=2n+1, n=1, 2, 3, . . . ) and/or greater than two (Z>2).

Abstract: An airfoil for a turbine engine includes an airfoil that has pressure and suction sides that extend in a radial direction from a 0% span position at an inner flow path location to a 100% span position at an airfoil tip. The airfoil has a curve that corresponds to a relationship between a trailing edge sweep angle and a span position. The trailing edge sweep angle is in a range of 10° to 20° in a range of 40-70% span position, and the trailing edge sweep angle is positive from 0% span to at least 95% span. The airfoil has a relationship between a leading edge dihedral and a span position. The leading edge dihedral is negative from the 0% span position to the 100% span position. A positive dihedral corresponds to suction side-leaning, and a negative dihedral corresponds to pressure side-leaning.

Abstract: A turbine engine blade made of composite material including fiber reinforcement densified by a matrix is fabricated by a method including: performing three-dimensional weaving to make a single-piece fiber blank; shaping the fiber blank to obtain a single-piece fiber preform having a first portion forming a preform for a blade root and an airfoil, at least one second portion forming a preform for a blade inner platform or for wipers of a blade outer platform, and at least one third portion forming a preform for reinforcing a blade inner platform or for overhangs of a blade outer platform; and densifying the fiber preform with a matrix to obtain a composite material blade having fiber reinforcement constituted by the preform and densified by the matrix, and forming a single piece with an inner and/or outer platform incorporated therein.

Abstract: An aerofoil component of a gas turbine engine has an aerofoil portion which spans, in use, a working gas annulus of the engine. The aerofoil portion has a pressure side outer wall and a suction side outer wall, each extending from the leading edge to the trailing edge of the aerofoil portion. The aerofoil portion further has one or more main passages which extend in the annulus-spanning direction of the aerofoil portion and which receive, in use, a flow of coolant. The aerofoil portion further has one or more suction wall passages which extend in the annulus-spanning direction of the aerofoil portion and which receive, in use, a flow of coolant, each suction wall passage being bounded on opposing first sides by the suction side outer wall and an inner wall of the aerofoil portion, the inner wall separating the suction wall passages from the main passages.

Abstract: A hollow blade including an airfoil extending along a longitudinal direction, a root, a tip, an internal cooling passage, and an open cavity defined by an end wall and a rim, together with cooling channels connecting the internal cooling passage to a pressure side. The cooling channels slope relative to the pressure side. A stack of airfoil sections of the blade at a level of the rim of the tip of the blade are offset towards the pressure side. The pressure side wall of the airfoil includes a projecting portion and cooling channels arranged in the projecting portion to open out into a terminal face of the projecting portion.

Abstract: Novel extruded ceiling fan blades, compositions and methods of making the blades from plastic material such as polystyrene are disclosed. The blades can be formed from two extruders so that different colors and/or finishes, such as wood grain looks can be formed on the upper and lower surfaces of the blades.

Abstract: A turbine engine wheel, in particular for a low pressure turbine, is provided. The wheel includes blades, each including an airfoil connected by a platform to a middle wall or tang extending radially and itself extended radially inwards by a root mounted in a slot of a disk, the platform and the tang defining two side cavities arranged on either side of the tang, which cavities are circumferentially open and are situated facing corresponding cavities in the directly adjacent blades, and sealing members being housed in the cavities adjacent to the blades. An annular sealing end plate is mounted on the upstream or downstream end of the disk, between the platforms and the disk, so as to face the slots and the roots of the blades, and includes a rotary coupling device for coupling with at least one of the sealing members.

Abstract: A nozzle segment for a nozzle ring of a gas turbine engine is disclosed. The nozzle segment includes an upper endwall, a lower endwall, and an airfoil extending between the upper endwall and the lower endwall. The airfoil includes a pressure side wall, a plurality of inner cooling apertures, and a plurality of outer cooling apertures. The plurality of inner cooling apertures extends through a pressure side wall and is arranged in a first row adjacent the lower endwall. The plurality of outer cooling apertures extends through the pressure side wall and is arranged in a second row adjacent the upper endwall.

Abstract: Disclosed is an adjustable stationary blade ring of a turbomachine, whose stationary blades are each supported in a bearing body onto which an inner ring, which is divided into two half rings and acts as a seal carrier, is pushed without deformation, viewed in the circumferential direction, as well as a method for assembling a stationary blade ring of this type and a turbomachine having a stationary blade ring of this type.

Abstract: An improved seal assembly for use with a combustion liner assembly is employed with a gas turbine engine so as to control fluid flow. The seal assembly has a bi-metal sealing member that is affixed to a first surface that is proximal to a second perpendicular surface that is not in contact with the first surface, thus providing a potential fluid flow path. Upon heating, the bi-metal sealing member “uncoils” contacting the second perpendicular surface, thus blocking the flowpath between the two surfaces. Various metals may be provided to provide predetermined sealing characteristics.

Abstract: A casing structure for a fluid flow machine, in particular for a gas turbine or an aircraft engine, including an outer casing wall and an inner casing wall, which annularly surround a flow channel of the fluid flow machine and are spaced apart in a radial direction with respect to the flow channel. At least one cavity is formed between the inner and outer casing walls. The cavity is axially divided into at least two regions which are separated from each other by an axial seal in such a way that different pressure conditions are created according to the axial position of these regions, which different pressure conditions correspond to the pressure conditions in the flow channel. A corresponding fluid flow machine such as, for example, an aircraft engine.

Abstract: A cover plate adapted to axially overlie root or shank portions of one or more buckets or blades secured to a turbomachine wheel, includes an arcuate cover plate body adapted to be secured to the turbomachine wheel so as to cover a root portion of at least one of the turbine buckets or blades; and at least one arcuate angel-wing seal segment detachably secured to one side of the arcuate cover plate body.

Abstract: A system includes a multi-stage turbine. The multi-stage turbine includes a first turbine stage with a first wheel having a plurality of first blade segments spaced circumferentially about the first wheel, a second turbine stage with a second wheel having a plurality of second blade segments spaced circumferentially about the second wheel, and an interstage seal assembly extending axially between the first and second turbine stages. The interstage seal assembly includes a first coverplate coupled to the first turbine stage. The first coverplate includes a first seal. The interstage seal assembly also includes a second coverplate coupled to the second turbine stage. The second coverplate includes a second seal. The interstage seal assembly also includes a spacer wheel extending from a rotor shaft and configured to engage with the first coverplate and the second coverplate.

Abstract: Disclosed are a turbomachine having at least one radial gap seal which has at least two opposite ceramic coatings which are constructed in each case from a ceramic powder, the particle size of which is smaller than 1.0 ?m, and a turbomachine having at least one radial gap seal, wherein the coatings are built up from powder-based individual layers, the outer layer of which has a higher ceramic fraction than a base layer close to the rotor or stator section respectively, wherein the particle size of the powder material is smaller than 1.0 ?m.

Abstract: Shroud device thermally protecting a gas turbine blade, having a ceramic layer and a metallic layer, the metallic layer being thermally protected by the ceramic layer, the ceramic layer being mechanically joined to the metallic layer by a fixation device having a plurality of protrusions extending from the metallic layer designed so as to engage with a plurality of cavities located in the ceramic layer, such that there exists a gap between the cavities and the protrusions at ambient temperature, the gap disappearing at high temperature operation of the gas turbine, the protrusions being then locked into the cavities.

Abstract: A power station (10) is provided having a turbine shafting (11) including a gas turbine (12) and a generator (18) which is driven directly by the gas turbine (12), produces alternating current at an operating frequency and whose output is connected to an electrical grid (21) with a predetermined grid frequency. An electronic decoupling apparatus or a variable electronic gearbox (27) is arranged between the generator (18) and the electrical grid (21), and decouples the operating frequency from the grid frequency.

Abstract: A variable bypass turbofan engine includes a bypass fan having a plurality of bypass fan blades mated to a first low pressure shaft segment. A second low pressure shaft segment includes a low pressure compressor and a low pressure turbine mated thereto. The engine also includes a clutch coupled between the first low pressure shaft segment and the second low pressure shaft segment and is configured to selectively couple and decouple the first low pressure shaft segment from the second low pressure shaft segment. A brake is configured to selectively halt or oppose rotation of the first low pressure shaft segment or the bypass fan.

Abstract: Systems and methods for preventing excessive loading on a wind turbine are disclosed. The method includes: measuring an actual wind parameter upwind from the wind turbine using one or more sensors; providing the measured wind parameter to a processor; providing a plurality of wind turbine operating data to the processor; utilizing the plurality of operating data to determine an estimated wind turbine condition at the wind turbine; generating a control wind profile based on the actual wind parameter and the estimated wind turbine condition; and, implementing a control action based on the control wind profile to prevent excessive loading from acting on the wind turbine.