Abstract: Systems and methods for use in wellbore completion and/or for operating a downhole tool, such as a downhole tool associated with well fracturing, include a tool assembly having a lower packer, an upper packer, a first downhole tool in the form of a flow control device, a second downhole tool in the form of a fracture tool, a plurality of production tools and a plurality of screens. Each tool assembly includes or is associated with a downhole actuator in the form of a shifting tool which is operable to actuate one or more of the first downhole tool, second downhole tool or production tools in use. The actuator may be disposed on, or operatively associated with a string, such as a tubular string. All operations are performed with a body of the shifting tool in tension.

Abstract: A system including a frac system with a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid, and a flush system configured remove particulate out of the hydraulic energy transfer system.

Abstract: The invention is a method of increasing hydrocarbon recovery through the biomineralization sealing of fractured geological formations followed by refracturing, including preparing a composition with biochemical components that is delivered into a geological subsurface through a cased well bore. Nutrient solutions are delivered into the geological subsurface through the well bore, thereby metabolizing the nutrient solutions with the biochemical components to create a mineralizing byproduct. Mineralizing solutions are delivered into the geological subsurface, delivering the composition, nutrient solutions and mineralizing solutions to targeted geological formations having existing formation fractures, through casing openings. Mineralizing solutions react with the mineralizing byproduct to produce minerals, which crystallize in the existing formation fractures, sealing and strengthening the existing formation fractures and resulting in sealed fractures.

Abstract: Fluid end for high pressure reciprocating pump, in particular for hydraulic fracturing pumps, comprising: a body having a first bore (18) for receiving a reciprocating plunger (31), a second bore (19) for accommodating a suction valve (41), and a third bore (21) for accommodating a discharge valve (43), the second bore (19) and the third bore (21) being perpendicular to the first bore (18); at least a tubular sleeve (30) in said first bore (18); at least a tubular cartridge (30) in the second bore and/or third bore; and a fluid tight seal between contacting surfaces of said sleeve (30) and said cartridge (30).

Abstract: The invention concerns a method for stimulating a treatment zone near a wellbore area in fluid connection with at least one porous zone of a subterranean formation, said method comprising the steps of generating (S1a) at least one electrical discharge in said wellbore at a distance from the at least one porous zone in order to propagate at least one shock wave adapted to fracture said treatment zone and introducing (S2a) a chemical agent within said treatment zone for increasing the permeability of said treatment zone.

Abstract: A well treatment fluid includes an aqueous-based fluid, a crosslinked CMHEC polymer, and a crosslinker. The CMHEC polymer exhibits a DS of 0.2 to 0.6 and a MS of 2.0 to 2.5. The well treatment fluid exhibits a viscosity of at least about 100 cP. A well treatment method includes crosslinking a CMHEC polymer in an aqueous-based fluid at a pH of at least about 6. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP. A well is treated with the well treatment fluid at a temperature of at least about 200° F. Another well treatment method includes forming a well treatment fluid from produced water that has a TDS content of at least about 150,000 ppm. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP.

Abstract: A system includes a drill string to which a sensor is attached, a rotation unit configured to rotate the drill string, and a displacement unit configured to longitudinally displace the drill string. A processor is coupled to the rotation and displacement units. The processor is configured to coordinate sampling, by the sensor, of three-dimensional space surrounding the sensor while rotating and displacing the drill string. The processor is further configured to coordinate adjusting of at least one of drill string rotation and drill string displacement so that acceptable spatial sampling of the space surrounding the sensor is achieved.

Abstract: The present application provides a method for characterizing reservoir micro pore structures, in particular structures smaller than 50 nm and a system therefore. The method can include fabricating a reservoir sheet; fabricating a reservoir sheet electrode using the reservoir sheet; depositing crystal substance in inner pores of the reservoir sheet of the reservoir sheet electrode using chemical deposition; obtaining the crystal substance by removing rock portions of the reservoir sheet in which the crystal substance is deposited; and scanning the shapes of the obtained crystal substance, the result of the scanning being the reservoir micro pore structure.

Abstract: An adaptor (64,66) has attachment means to releasably attach a core orientation instrument (60) or survey probe to a drill string component and/or drill string, preferably by one or more screw threads (70, 72, 76, 78), retaining screws, bolts, clips or pins or welding/soldering. Anti release means, such as a circlip, can be used to prevent release of the adaptor. A survey system for obtaining data from a drilling operation includes a core orientation instrument, a downhole survey probe and a common single remote controller/data logger configured to control or communicate with both the survey probe and the core orientation instrument. Further, a survey system includes multiple components arranged in a portable container for transport and deployment at a drilling site include a survey probe, a core orientation instrument and a single controller configured to control or communicate with the survey probe and core orientation instrument.

Abstract: A method for calibrating sensors in a drilling apparatus provided with a movable carrier, a frame, a boom assembly mounted to rotate about a turning axis vertical to the frame, and an angle sensor for measuring the turning angle of the boom assembly and gravity-based inclination sensors for measuring inclination. When the boom assembly is turned in relation to the frame, the value of the turning angle and the inclination values provided by the inclination sensors are measured, and on the basis of the measured values, deviation of the values of the inclination sensors from the real inclination angle value are determined.

Abstract: A method for calculating a value representative of a downhole temperature in a hydrocarbon well, wherein the well includes production tubing inside an outer tubing, an annulus is provided between the production tubing and the outer tubing, and the annulus receives a hydraulic control line supplying hydraulic fluid for the control of a downhole device, the method including sensing the pressure of hydraulic fluid in the control line at the wellhead, and using a measurement of the pressure to calculate the value representative of the downhole temperature.

Abstract: Methods, computer-readable media, and systems for up hole transmission of well data based on bandwidth are described. A down hole type data transmission tool includes an input device to receive data from a well tool. The tool includes a processor to determine that sufficient bandwidth is unavailable to transmit all of the received data up hole to a data receiving device in real time, and, responsively, divide the data into a portion to be transmitted up hole in real time and a remainder to be transmitted later. The remainder can be buffered in a memory and transmitted at a later time, for example, when sufficient bandwidth is available.

Abstract: A technique facilitates an improved operation of a tool, such as a downhole tool. The tool is operated in a manner which provides a dynamic or cyclical loading. The dynamic or cyclical loading of the tool is sampled by a suitable sensing system at a frequency greater than the frequency of the dynamic or cyclical loading to collect detailed data on the dynamic or cyclical loading. The data is used to adjust the tool in a manner which improves operation of the tool. One technique for adjusting the tool is changing the dynamic or cyclical loading of the tool by adjusting the frequency of the dynamic or cyclical loading.

Abstract: A system includes a transmitter for use in conjunction with a horizontal directional drilling system that transmits a multi-bit symbol stream that characterizes sensor symbols for receipt by an aboveground portable device. The portable device receives the symbol stream for aboveground recovery of the sensor signals. The transmitter can precisely place the symbol frequencies at least to avoid a noise environment, as well as to avoid powerline harmonics, and can utilize wave shaping for transmitted symbols at least to provide for transmission power control, spectral content control and wideband antenna matching. The receiver can measure the noise environment to identify the symbol frequencies used by the transmitter. The noise can be scanned at an incremental resolution across a wide frequency bandwidth for display or automatic symbol frequency selection.

Abstract: Disclosed is a data transmission system and a method for transmission of downhole measurement data to the ground. The system includes a drill string mounted with a logging while drilling measurement tool, and a throw while drilling section, which accommodates a micromemory. The throw while drilling section includes a housing which is mounted outside of the drill string as a sleeve to form a clearance space therebetween; a control circuit; and a wireless transceiver. The throw while drilling section releases, under function of a micromemory release instruction transmitted by the control circuit, the micromemory loaded with the downhole measurement data to the ground.

Abstract: An apparatus for monitoring vibration of a downhole component includes an optical fiber sensor including at least one optical fiber operably connected to an interrogation unit. The at least one optical fiber has a resonant segment that is fixedly attached to the component via attachment points on the component, the resonant segment between the attachment points being separate from the component and having a resonant frequency based at least on the length of the resonant segment.

Abstract: Systems and methods for detecting faults in the active damping of a logging tool are disclosed herein. A wellbore logging tool system comprises a processor, a memory, a wellbore logging tool comprising an acoustic transmitter, and a logging tool control module. The logging tool control module is operable to receive sensor signals from one or more sensors coupled to the wellbore logging tool after a damping control signal has been transmitted to the acoustic transmitter. The logging tool control module is also operable to determine one or more expected sensor signals, determine error values using the expected sensor signals and the sensor signals received from the one or more sensors, and compare the error values with one or more thresholds.

Abstract: An apparatus and method to improve transmission of mud pulse telemetry signals is described. A mud pulser is placed in series with a water hammer pulse valve. While generating pulse signals, the mud pulser modulates the flow of mud downstream to the pulse valve. The pulse valve, which cycles at a frequency that is proportional to the flow rate through the tool, operates at a frequency that is effectively modulated by the mud pulser. A sensor that may be at the surface receives a mud pulse signal that comprises both an amplitude modulated component as well as a frequency modulated component.

Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.

Abstract: The present invention provides a mining method. The method includes: dividing a mining region into a plurality of federated mining regions; performing an open-pit mining operation in each of the federated mining regions and forming a pit in each of the federated mining regions; performing an underground mining operation on a slope of the pit and forming a plurality of excavated tunnels; and backfilling a pit of a previous federated mining region with a spoil of a subsequent federated mining region.

Abstract: Methods and systems for detecting a person located around a piece of equipment. One system includes processor configured to define a first virtual zone around a piece of equipment, determine a location of a person, and define a second virtual zone around the person at the location. As the location of the person changes, the processor is further configured to determine a direction of travel of the person, and automatically modify the second virtual zone to extend a first distance in the direction of travel of the person and extend in a second distance opposite the direction, wherein the first distance is greater than the second distance. In response to at least a portion of the second virtual zone overlapping with at least a portion of the first virtual zone, the processor is configured to perform at least one action.

Abstract: A monitoring device and method for monitoring a longwall mining system having a plurality of roof supports, each roof support including a pressure sensor to determine pressure levels of the roof support during a monitoring cycle. Pressure data is obtained for the plurality of roof supports. The pressure data includes pressure information for each roof support of the plurality of roof supports over a monitoring cycle. The pressure data is analyzed to determine, for each roof support, whether a first type pressure failure occurred during the monitoring cycle. A fault quantity is generated that represents the number of roof supports determined to have had the first type of pressure failure occur during the monitoring cycle. An alert is generated upon determining that the fault quantity exceeds an alert threshold.

Abstract: An improved vane pump assembly is provided. The vane pump assembly includes a housing with an open chamber that is circular in shape when viewed in cross-section and has an inner wall that surrounds the open chamber. A rotor is rotatably disposed in the open chamber of the housing. As with the open chamber, the rotor is circular in shape when viewed in cross-section and has a diameter. The rotor further has at least one through-passage which extends diametrically across the rotor. The rotor is positioned such that it has a center that is offset from a center of the circular open chamber of the housing.

Abstract: The present application relates to the compressor drum of an axial turbomachine. The drum includes a wall of revolution that forms a hollow body. The wall includes two annular retaining surfaces of the blades which mate with corresponding retaining surfaces of the said blades. These surfaces are generally directed away from one another to form a profile which diverges as its distance radially from the outer surface of the wall increases. The retaining surfaces of the drum may be formed on an outer annular body or on inclined annular flanges.

Abstract: A blade for a turbomachine is disclosed. At least one cooling channel is configured in the blade neck, whose inlet is disposed near a platform projection on the high-pressure side and whose outlet is disposed in the region of a platform projection on the low-pressure side. An integrally bladed rotor base body having a plurality of these types of blades as well as turbomachine with such a rotor base body is also disclosed.

Abstract: A clip for attachment as an edge. The clip having two symmetric sides, each side composed of five arcs. A first arc of the side starting at the midpoint of the nose having a radius of 0.2476 inches and an arc length of 0.22395 inches. A second arc connected to the first arc having a radius of 0.5832 inches and an arc length of 0.0947 inches. A third arc connected to the second arc having a radius of 0.4636 inches and an arc length of 0.1682 inches. A fourth arc connected to the third arc having a radius of 0.3822 inches and an arc length of 0.2263 inches. A fifth arc connected to the fourth arc having an arc having a radius of 0.3291 inches and an arc length of 0.1917 inches. The fifth arc of each side forming the slot end on the clip.

Abstract: A rotor 16 is provided, including a vertical rotation axis 12 and at least two rotor blades 18, 20, 22 arranged on the rotation axis 12, wherein at least one rotor blade 18, 20, 22 includes an opening 60 with an openable closure element 62. Due to the design of the rotor blade 18, 20, 22, the rotor 16 has particularly high efficiency.

Abstract: The present application relates to the compressor stator of an axial turbomachine. The stator comprises an annular row of main stator blades and auxiliary blades each of which are associated with a main blade. The auxiliary blades are located at the trailing edges of the main blades and are in the vicinity of the pressure faces of the main blades. The auxiliary blades are aligned to generate a low-pressure area at the trailing edges of the main blades. Thus, a flow bypassing a main blade by its suction face is sucked in by the low-pressure area when it approaches the trailing edge of the main blade. Stalling is thus avoided and the efficiency of the machine is improved.

Abstract: A turbine blade that includes an airfoil defined by a concave shaped pressure side outer wall and a convex shaped suction side outer wall that connect along leading and trailing edges and, therebetween, form a radially extending chamber for receiving the flow of a coolant. The turbine blade further may include a rib configuration that partitions the chamber of the airfoil into radially extending flow passages. A first flow passage may include a first side on which turbulators are positioned, wherein each of the turbulators comprises a canted configuration.

Abstract: A turbine or compressor stage of a gas turbine, the rotor blade having a radially outer shroud (1) which has a sealing fin array having a first sealing fin (3.1) and a second sealing fin (3.2) which is adjacent to the first sealing fin and connected thereto by a first groove base (10) having a circumferential region (13) of maximum radial height, which is located at a first circumferential position is provided. The sealing fin array has a third sealing fin (3.3) adjacent to the second sealing fin and opposite to the first sealing fin, the third sealing fin being connected to the second sealing fin by a second groove base (20) having a circumferential region (23) of maximum radial height, which is located at a second circumferential position different from the first circumferential position.

Abstract: One aspect of the present disclosure includes a ceramic matrix composite airfoil having a shaped ceramic matrix composite core, a cooling fluid flow network having ceramic foam components, and a ceramic lamina skin disposed about the shaped core and the cooling fluid flow network.

Abstract: An airfoil member is disclosed having an attachment feature such as a fir tree or dovetail design that includes a curved profile formed from a combination of curves. In one embodiment, the curved profile can be a compound curve formed by a forward curve and a rearward curve that are joined at a point of common tangency. In another embodiment, the curved profile can include curves that do not meet at a common tangency. A cut out can be formed in the curved profile. In some forms, the cut out is formed on a pressure face of the attachment feature.

Abstract: A system for relieving stress on a turbine rotor blade dovetail in a gas turbine is provided. At least one turbine rotor blade includes a dovetail that is axially insertable into a correspondingly-shaped slot defined in a turbine disk. At least one axially-extending tang is defined on the dovetail. At least one stress relief surface is defined in the at least one tang. The at least one stress relief surface extends along a central portion of a length of the tang. Accordingly, contact between the at least one tang and an inner surface of the slot is precluded, along the central portion, such that stresses generated by radially-directed forces along the central portion are reduced.

Abstract: An adjustable blade root spring device for turbine blade fixation in turbomachinery. The device is designed to be placed in a space in a rotor disk cavity adjacent to a tip of a blade root fir tree, where the device applies a radial outward force on the turbine blade to fix the blade position in the rotor disk. The device includes an accordion-shaped spring which is compressed by a bolt and a coil spring. When the accordion spring is compressed in length, it increases in height and makes contact with the rotor disk and the turbine blade. The force of the accordion spring on the turbine blade can be adjusted via the bolt, and the coil spring provides an increased compliance range. The device can be inserted into the space without scraping against the blade root or the rotor disk, and expanded once it is in position.

Abstract: A fuel injector comprises a swirler and the swirler comprises a plurality of vanes, a first member and a second member. The second member is arranged coaxially around the first member and the vanes extend radially between the first and second members. The vanes have leading edges and the second member has an upstream end. The leading edges of the vanes extend with radial and axial components from the first member to the upstream end of the second member and the radially outer ends of the leading edges of the vanes form arches with the upstream end of the second member. The arrangement of the swirler enables the fuel injector to be built by direct laser deposition.

Abstract: An annulus filler is provided for mounting to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc. The annulus filler is substantially entirely formed from a polymer matrix composite material. It has an outer lid which defines an airflow surface for air being drawn through the engine in an axial airflow direction, and a support structure which is connectable to the rotor disc to support the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. In use, under centrifugal loads, the opposing support walls resiliently deform to allow outward radial movement of the lid. Each support wall is thickened in a region neighboring the attachment strap.

Abstract: A sealing device of an axial turbomachine, comprising a circular strip with an outer surface and an inner surface; an annular layer of abradable material on one of the outer and inner surfaces of the strip, designed to provide a sealing with an annular row of rotor blades. The surface of the strip covered by the abradable layer comprises at least two perforated circular zones, each with a series of distributed perforations. The surface of the strip covered by the abradable layer further comprises a smooth circular zone disposed axially between the perforated areas. The smooth zone is centered on the outer ends of the rotor blades. The smooth circular zone and the two perforated circular zones improve the adhesion of the abradable layer on the metal strip, and avoid a premature breakdown of the abradable layer in contact with the rotor blades, despite the presence of perforations.

Abstract: A variable nozzle is comprised of: an exhaust duct vectoring a flow of the exhaust gas to the aft end; a plurality of primary flaps arranged to define a primary flow path converging toward the aft end, each of the primary flaps being swingably pivoted on the exhaust duct to regulate a degree of opening the primary flow path and including a first section and a second section forming an angle axially outward relative to the first section; and a plurality of secondary flaps arranged to define a secondary flow path in communication with the primary flow path, the secondary flow path being capable of divergent toward the aft end, the secondary flaps being respectively swingably pivoted on the second sections of the primary flaps to regulate a degree of opening the secondary flow path.

Abstract: Embodiments of the present invention may include a variable nozzle turbocharger having a variable nozzle mechanism for controlling a flow velocity of exhaust gas to a turbine wheel. The variable nozzle mechanism includes a plurality of variable nozzles, a unison ring and a biasing member. The variable nozzles each have a nozzle vane. The unison ring is configured to adjust a degree of opening of the variable nozzles through rotation of the unison ring. The biasing member biases the unison ring so as to open the variable nozzles.

Abstract: A number of variations may include a method for increasing peak flow in a variable geometry turbine turbocharger comprising: by-passing fluid flow to a turbine impeller by forming at least one internal by-pass passage through at least one of a lower vane ring of a vane pack assembly or a turbine housing below the lower vane ring; providing a first end of a vane component within the at least one internal by-pass passage; and using the first end of the vane component as a rotary valve to control fluid flow through the at least one internal by-pass passage.

Abstract: A method and system for establishing sets of blade frequency values for each rotating blade of a rotor assembly at two or more different points in time and determining an indication of blade health from the change in the blade frequency values is provided. Blade frequency values are determined by receiving measurements of vibratory responses from blade monitoring equipment (20) and processing via a processing device (30) vibration data as a system of rotating blades to extract a frequency of each blade. Sets of blade frequency values are compared to determine a change in the blade frequency values for each rotating blade to provide the indication of blade health.

Abstract: The present application and the resultant patent provide a wash system for a gas turbine engine. The wash system may include a water source containing a volume of water therein, and a surface filming agent source containing a volume of a surface filming agent therein. The wash system also may include a mixing chamber in fluid communication with the water source and the surface filming agent source, wherein the mixing chamber is configured to mix the water and the surface filming agent therein to produce a film-forming mixture. The wash system further may include an aerosolizing device in fluid communication with the mixing chamber and configured to form an aerosol spray of the film-forming mixture and a propellant. The wash system still further may include a number of supply lines in fluid communication with the aerosolizing device and configured to direct the aerosol spray into the gas turbine engine.

Abstract: A coating process comprising applying to a surface a coating composition consisting essentially of an alkali metal silicate and an aqueous liquid phase having dispersed therein solid aluminum particles to form on the surface a wet coating; and drying said wet coating: under conditions which convert said wet coating to an electrically conductive, corrosion-resistant, solid coating; or under conditions which form a solid coating which is not electrically conductive (non-conductive) and thereafter treating said non-conductive coating under conditions which convert said non-conductive coating to an electrically conductive, corrosion-resistant coating.

Abstract: An assembly for flexibly damping a power gear box for a gas turbine engine, the assembly includes a flexible mount connected to the power gear box at a first end of the flexible mount; a member connected to the flexible mount at the first end of the flexible mount and a second end of the flexible mount, wherein the first end of the flexible mount includes an outer rim connected to the member and an inner rim connected to the power gear box and a set of circumferentially segmented squeeze film damper lands configured to receive a damping fluid is provided between the inner rim and the outer rim.

Abstract: A turbine engine system includes a heat source, a heat exchanger, a cooling medium inlet and a cooling medium outlet. The heat source includes a first passage. The heat exchanger includes a second passage and a third passage. The first and the second passages are configured in a closed loop circuit. The third passage is configured between the inlet and the outlet in an open loop circuit.

Abstract: A bearing housing (1) of an exhaust-gas turbocharger, having a compressor-side housing flange (2), a central housing section (3) which is integrally connected to the housing flange (2) and in which a first partial section (4) of an oil chamber (5) is arranged; and a turbine-side housing section (6) which has a turbine-side housing flange (7) and in which a second partial section (8) of the oil chamber (5) is formed. The central housing section (3) and the turbine-side housing section (6) are formed in one piece. A bearing housing (9) which forms a separate component is inserted into the central housing section (3) and into the turbine-side housing section (6), with these delimiting the oil chamber (5).

Abstract: A casing for a fan drive gear system includes a cast body with an upper and a lower portion. The cast body defines an oil inlet and an oil outlet arranged below the oil outlet. An integrally cast oil channel extends between the inlet and outlet for conveying oil from the upper portion of the cast body portion to the lower portion of the cast body for providing a supply of lubrication to the gear system when oil pools in an upper portion of an auxiliary oil reservoir during negative-G flight events.

Abstract: A panel connection assembly connects a panel to a casing including hanger, first locating, and second locating plates. The hanger plate has elongate body, first end, and opposite second end portions, with each of the first and second end portions having a circular profile. The hanger plate has a dumbbell shape. The first locating plate has a first circular locating aperture, the first locating aperture to accommodate the first end portion, and the second locating plate has a second circular locating aperture, the second locating aperture to accommodate the second end portion. In use, the first locating plate is secured to the casing, the second locating plate is secured to the panel, the first and second end portions are respectively accommodated within the first and second locating apertures with the elongate body portions extending therefrom, to connect the panel to the casing.

Abstract: An additional pad 27 is additionally and integrally arranged from an outer surface of a flange 17 opposite to a contacting side of the flange 17 to a small-diameter curved surface of a bend 19 and from there to an end of an outer surface of a part body 13. On an outer surface side of the additional pad 27, a fastening seat 27f is formed by machining. An area end PAe of a processed area PA formed by machining is positioned on the part body 13 beyond the bend 19.

Abstract: A turbomachine includes: a stator-side housing having: a plurality of stator-side guide vane supports fastened to the stator-side housing, stator-side guide vanes fastened to the stator-side guide vane supports, and axially spaced guide vane rings; and a rotor having a plurality of rotor-side moving blades. At least two guide vane supports are jointly fastened to and centered on a flange of the stator-side housing.