Abstract: A method for treating produced water or a feedwater stream with an evaporator. The feedwater stream or produced water is directed to and through a deaerator located upstream of the evaporator. Steam produced by the evaporator is utilized to strip dissolved gases from the produced water or feedwater stream passing through the deaerator. To efficiently strip dissolved gases, the vapor pressure in the deaerator is maintained at below atmospheric pressure and the produced water or feedwater stream is heated to a temperature greater than the saturated vapor temperature in the deaerator.

Abstract: There is provided a process for producing hydrocarbons from a reservoir. The process includes within the hydrocarbon reservoir, electrically heating a liquid heating fluid such that the liquid heating fluid is evaporated to produce a gaseous heating fluid, heating hydrocarbon material with the gaseous heating fluid such that the heated hydrocarbon material is mobilized and such that the gaseous heating fluid is condensed to produce a condensed heating fluid, and electrically heating at least a fraction of the condensed heating fluid such that the at least a condensed heating fluid fraction is re-evaporated, and while the evaporation, the condensing, and the re-evaporation are being effected, producing a produced fluid including at least the mobilized hydrocarbon material.

Abstract: A method of increasing a permeability of a strata includes positioning an electromagnetic tool at a first location of the strata, generating a first time-varying magnetic field using the electromagnetic tool, and applying a first time-varying magnetic force to a first magnetic material of the strata using the first time-varying magnetic field, where the strata includes a first plurality of pores. The method further includes fracturing the strata to increase the permeability of the strata proximate the first location using the first time-varying magnetic force.

Abstract: A method of protecting a first well from stimulation fluid of a second well includes shutting in the first well; starting injection of natural gas into the first well to increase a pressure of the first well; treating the second well using a stimulation fluid after starting natural gas injection; and stopping injection of natural gas.

Abstract: In accordance with some embodiments of the present disclosure, a geomechanical model of the stresses on an orthorhombic media for use during a subterranean operation is disclosed. The method includes retrieving a stiffness coefficient matrix for a formation to be fractured and generating a geomechanical model of the formation based on a set of natural fractures and an anisotropic behavior of the formation. The method additionally includes calculating a mechanical property of the formation based on the model and the stiffness coefficient matrix. The method further includes fracturing the formation with a fracturing fluid, a pressure of the fracturing fluid based on the mechanical property.

Abstract: Examples of techniques identifying and determining wear of a component used in a well operation are disclosed. In one example implementation according to aspects of the present disclosure, a method may include: identifying the component from a plurality of components, wherein an identifier is connected to the component, the identifier comprising a unique identifier to identify the component from the plurality of components; measuring a volume of sand passing through the component over a period of time; measuring a volume of fluid passing through the component over the period of time; and determining, by the processing system, a failure risk level for the component based at least in part on the volume of sand passing through the component over the period of time and based at least in part on the volume of fluid passing through the component over the period of time.

Abstract: Examples of identifying a component used in a well operation using a leaky coaxial antenna are disclosed. In aspects of the present disclosure, a method may include: reading an electronic identifier connected to a component used in the well operation via the leaky coaxial antenna to obtain a unique identifier, wherein the electronic identifier comprises the unique identifier; identifying the component from a plurality of components by comparing the unique identifier to a plurality of unique identifiers stored in a data store; receiving usage data from a sensor connected to the identified component; storing, by the processing system, the usage data in the data store for the identified component; and determining a failure risk level for the component based at least in part on the stored usage data for the identified component, wherein the leaky coaxial antenna comprises a plurality of radiating regions and a plurality of non-radiating regions.

Abstract: Apparatus (100) for measuring drilling parameters of a down-the-hole drilling operation for mineral exploration includes a module 10.1 mounted in-line with a drill string (110) and proximate to a drill bit (120). The drill string (110) is rotated and progressed down the hole. The module (10) has sensors for sensing conditions. The apparatus (100) measures drilling parameters based on the sensed conditions. The measured data is logged in the module (10) and then transmitted to a computer for a drilling operator's use. The drilling operator monitors progress and optimises performance of the drilling operation based on the measured data. Measurement of drilling parameters based on sensed data proximate to the drill bit enables accurate determination of actual WOB, torque and RPM fluctuations, axial vibration, radial vibration, temperature, RPM. A second module 10.2 is mounted in-line with the same drill string (110) but away from the drill bit (120). The second module 10.

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: An example apparatus includes a drill bit body and a leg extending from the drill bit body. A journal may extend from the leg, with a gamma ray detector at least partially within the journal. In certain embodiments, the gamma ray detector may be confined within a pressure protective cavity at least partially within the arm of the journal. In certain embodiments, the gamma ray detector may be a scintillator aligned with at least one of a photomultiplier, photodiodes, or phototransistors.

Abstract: A wellbore is divided into a plurality of depth intervals. For each depth interval of the plurality of depth intervals, a specific gas gravity, pseudo-critical gas properties, a pseudo-reduced gas pressure and temperature, a gas deviation factor, and a gas gradient and a bottom node pressure are determined. The determined bottom node pressure is used as a static bottomhole pressure.

Abstract: A stator bore gage comprises a detector assembly comprising a wheel configured to engage an inside surface and to transduce the varying surface diameters into electrical or optical signals representative of the condition of the inside surface as the detector traverses the inside surface.

Abstract: The present disclosure provides for a ranging and proximity detection system that includes a radiation source, the radiation source positioned within a first wellbore and a radiation detector positioned within a second wellbore.

Abstract: Disclosed are tools, systems, and methods for detecting one or more underground acoustic sources and localizing them in depth and radial distance from a wellbore, for example, for the purpose of finding underground fluid flows, such as may result from leaks in the well barriers. In various embodiments, acoustic-source detection and localization are accomplished with an array of at least three acoustic sensors disposed in the wellbore, in conjunction with array signal processing.

Abstract: A communication system 100 is configurable to operate in either a transparent mode or a data streaming mode. In the transparent mode data is transferred to a data requesting component 112 from a data source 102 using a request-response protocol. In the data streaming mode a second data transfer component 106 is configured to obtain 606 data from the data source component via a third data link 104, and to transfer 608 the data to a first data transfer component 110 via a second data link 106, which has a relatively higher latency, without using the request-response protocol. The first data transfer component is configured to store 610 the transferred data and to transfer 614 the stored data to the data requesting component via the first data link upon receiving a request for the stored data from the data requesting component.

Abstract: A communication system for use with a well tool can include an of outer toroid antenna. The outer toroid antenna can be positionable around an outer housing of the well tool. The communication system can also include an inner toroid antenna positionable within the outer housing of the well tool. The communication system can further include a switch coupled to the outer toroid antenna and the inner toroid antenna. The switch can be operable to enable or disable a wireless communication via the outer toroid antenna or the inner toroid antenna.

Abstract: A method, apparatus, and program product evaluate fracture abundance in a subsurface formation by modeling a fracture network in a three-dimensional volume using geometric primitives and based at least in part on geomechanical simulation of mechanical properties of the subsurface formation.

Abstract: A through-casing formation monitoring system may include a casing string positioned within a wellbore, a power source electrically coupled to the casing string, a voltage sensor electrically coupled to an inner surface of the casing string such that the voltage sensor allows a continued operation of the wellbore, a fiber optic cable coupled to an electro-optical transducer within the voltage sensor, and an optical interrogation system configured to measure an electric potential applied to the electro-optical transducer via the fiber optic cable.

Abstract: An example method for modeling a geological formation includes receiving a set of measurements from an electromagnetic logging tool and representing at least one characteristic of the geological formation as at least one continuous spatial function. At least one coefficient of the at least one continuous spatial function may be determined based, at least in part, on the set of measurements. At least one characteristic of the geological formation may be determined based, at least in part, on the at least one continuous spatial function.

Abstract: A sampling and analysis system, and related method, for use in exploration drilling, particularly diamond drilling. The system includes a number of sub-systems, including a capturing sub-system, a sample recovery and splitting sub-system, a sample preparation/drying sub-system, a sample handling and sensor sub-system, a data collection and management sub-system, an automated data analysis and interpretation sub-system, and a control sub-system for data collection and process control. The sample handling and sensor sub-system may comprise an integrated arrangement or separate units providing a sample handling sub-system and a sample sensor sub-system. The sample preparation/drying sub-system is operable to ensure that the samples it receives from the sample recovery sub-system are optimally prepared for introduction to the sample handling and sensor sub-system. The sampling and analysis system may be autonomous or operable manually or semi-automatically.

Abstract: A method and system is provided that analyzes flow characteristics of return fluid that flows to a surface-located facility during well operations (such as plug mill-out or cleanout/workover operations) in order to characterize local formation properties of the formation. The method and system can be used to characterize a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well having a number of intervals that are hydraulically isolated from one another by corresponding plugs.

Abstract: Various methods and well systems are provided for characterizing a hydraulically-fractured hydrocarbon-bearing formation that is traversed by a well partitioned into a number of intervals. The methods and well systems analyze surface flow characteristics of fluid that flows from the well (for example, using a multiphase flow meter) in order to characterize local formation properties for one or more intervals for one or more intervals (or other sections) of the well.

Abstract: A method for evaluating a formation fluid includes the steps of drilling a borehole intersecting a formation with a drill string, circulating a drilling fluid in the wellbore, selectively liberating a formation fluid from the formation, injecting the liberated fluid into the drilling fluid returning to the surface, drawing a sample of the returning drilling fluid at the surface, and estimating at least one parameter of the drawn sample at the surface.

Abstract: A fluid delivery system for a longwall shearer. The fluid delivery system includes a flow control device and an electronic processor. The flow control device is in fluid communication with a nozzle positioned on the shearer, and in fluid communication with a fluid source. The electronic processor is coupled to the flow control device. The electronic processor is configured to receive a measure of a capacity parameter, and determine a model fluid flow based on the measure of the capacity parameter. The capacity parameter corresponds to a position of the shearer along the mineral face. The electronic processor is further configured to set an operational parameter of the flow control device based on the model fluid flow, and operate the flow control device at the set operational parameter.

Abstract: The invention relates to a tool device for a ground milling machine, particularly a road milling machine, a recycler, a stabilizer or a surface miner. The tool device comprises a milling chisel with a highly wear-resistant chisel tip, particularly comprising PCD material, and a chisel shaft extending along a longitudinal axis, and a chisel holder with a shaft receptacle, the chisel shaft of the milling chisel having at least one tapering section narrowing in a direction away from the chisel tip. Furthermore, a fastening device is provided, which is designed in such a way that it pulls the milling chisel along its longitudinal axis and in the direction away from the chisel tip into the shaft receptacle, the shaft receptacle of the chisel holder being designed complementary to the chisel shaft of the milling chisel in such a way that the tapering section, when braced by the fastening device, bears against the chisel holder in the shaft receptacle in a frictionally locking manner shaft receptacle.

Abstract: An arrangement for a rock bolt that is intended to be embedded in grout in a borehole, a method for using said arrangement, and a reinforcement system including such an arrangement. The rock bolt is equipped with a longitudinal tube with a passage, wherein an extended electrically conducting sensor is introduced into the passage of the tube and the sensor is connected with the anchoring end of the rock bolt, a monitoring arrangement designed to be connected to the rock bolt, that an electrically conducting circuit is formed through the connection of the rock bolt, the sensor and the monitoring arrangement, wherein the monitoring arrangement includes evaluation means intended to evaluate the presence of changes in the condition of the bolt, and signaling means 36 designed for the signaling of the condition of the bolt.

Abstract: A platform door arrangement with a traffic route (1), a railroad platform (2), a partially raised partition (3) between the platform (2) and the traffic route (1) and platform doors (31) arranged in the partition wall (3). The traffic route (1) and the platform (2) are arranged within a housing having a ceiling (22), or within a subway. An air exchange occurs between the traffic route (1) and the platform (2) via a free space (30) between the partially raised partition (3) and the ceiling (22). The free space (30) is closed off in an air permeable manner from above the partially raised partition (3) up to the ceiling (22).

Abstract: A pneumatic engine includes a plurality of pneumatic motors and an engine drive shaft. Each motor has a motor gas inlet, a motor gas outlet, and a rotor driven by gas flow between the motor gas inlet and the motor gas outlet. The engine drive shaft is drivingly coupled to the motor drive shaft of each of the pneumatic motors.

Abstract: A cooling structure for a turbine is configured such that: a plurality of disks rotating integrally with blades are arranged along a rotational axis; and the disks have formed therein disk holes arranged in a circumferential direction to supply cooling air for cooling the rotor blades to downstream disks. At least one of the disk holes is set such that, when the rotational direction of the disk is defined as the positive direction and the direction opposite the rotational direction is defined as the negative direction, an outlet absolute circumferential velocity vector which is a component in a rotational direction U of the velocity vector of the cooling air at an outlet of a disk hole is smaller than an inlet absolute circumferential velocity vector which is a component in the rotational direction of the velocity vector of the cooling air at an inlet of the disk hole.

Abstract: A damper ring is mounted in frictional engagement with a radially inwardly facing surface of a circumferential groove defined in a rotary part of a gas turbine engine. Energy dissipation is provided via sliding friction of the ring in the groove. The damper ring has a circumferentially segmented ring body having a non-uniform circumferential stiffness around its circumference including a locally reduced stiffness in a circumferential direction between each pair of circumferentially adjacent ring segments.

Abstract: An impulse element module for a turbomachine, in particular a turbine stage of a gas turbine, preferably an aircraft gas turbine, including a single-unit receptacle component having a base and side walls that extend peripherally thereon, the side walls and the base bounding a receiving space; a single-unit insert component having a form that is inserted into receiving space of receptacle component; together, the receptacle component and the insert component accommodated therein being designed to define a plurality of spaced apart cavities; and an impulse element, in particular a sphere, being accommodated in each cavity; and a single-unit sealing component that is joined in a material-to-material bond to the receptacle component in a way that allows the receiving space to be sealed and the insert component to be surrounded by the receptacle component and the sealing component.

Abstract: An article includes a substrate formed of a molybdenum-based alloy. The molybdenum-based alloy has a composition that includes molybdenum, silicon, and boron. A barrier layer is disposed on the substrate. The barrier layer is formed of at least one noble metal.

Abstract: A coating system disposed on a surface of a substrate is provided. The coating system includes a bond coating on the surface of the substrate, a protective coating on the bond coating, a thermal barrier coating on the protective coating, and a protective agent disposed within at least some of the voids of the thermal barrier coating. The protective coating is constructed from a ceramic material, and the thermal barrier coating defines a plurality of elongated surface-connected voids. Methods are also generally provided for forming such a coating system.

Abstract: A vane assembly for a gas turbine engine includes an outer platform, an inner platform, a vane, and a seal. The outer platform is disposed proximate a case. The outer platform has a first rail extending towards the case. The first rail has a first face, a second face disposed opposite the first face, and a first opening extending from the first face towards the second face. The inner platform is disposed opposite the outer platform. The vane extends between the inner platform and the outer platform. The seal is received within a slotted region that is disposed between the first face and the second face.

Abstract: There are provided techniques and apparatuses for fan blade pitch setting. For example, there is provided an impeller including a ring disposed in a hub of the impeller. The ring can include a recess shaped and positioned to impart a specified pitch angle to a blade extending outwardly from the ring through the hub.

Abstract: A feeder duct assembly for a gas turbine engine, which negates the need for a ball or axial joint in the duct for required for flexibility under thermal loading. The feeder duct assembly of the present innovation comprises an end fitting designed to meet flexibility requirements without compromising dynamic performance of the system with added weight from ball or axial joints in the ducts.

Abstract: An alignment tool for use in a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a clamp portion, a component engagement portion and an arm portion that extends between the clamp portion and the component engagement portion. The clamp portion establishes a fixed datum surface for positioning a component within the gas turbine engine.

Abstract: A method for cooling a component of a gas turbine engine includes flowing a cooling airflow through a cooling passage of a turbine rotor blade, wherein the cooling passage includes an inlet and an outlet formed on a blade tip of the turbine rotor blade. The method further includes receiving at least a portion of the cooling airflow exiting the outlet of the cooling passage with an aperture defined in a casing of the gas turbine engine, wherein the casing is spaced from the blade tip along the radial direction. In addition, the method includes providing the cooling airflow received with the aperture defined in the casing to the component of the gas turbine engine through a coolant duct assembly of the gas turbine engine.

Abstract: An arrangement of a rotating component and a stationary component of a gas turbine engine includes a rotating component, a stationary component positioned to define an actual gap between the rotating component and the stationary component, and a flow restriction feature formed at one of the stationary component or the rotating component. The flow restriction feature is configured to induce a recirculation flow at the actual gap, thereby defining an effective gap between the rotating component and the stationary component to reduce a leakage flow therebetween, while maintaining the actual gap greater than the effective gap.

Abstract: An exhaust-gas section for a gas turbine, having a surrounding shroud having a first opening, which is arranged in a region of the exhaust-gas section that has a pressure lower than the air pressure of the outer environment of the gas turbine in an operating state of the gas turbine and which forms the outlet of an air channel, the inlet of which is connected to the outer environment of the gas turbine. The air channel has a chamber at the outlet-side end of the air channel, which chamber has a second opening, through which a specified gas mass flow is admitted into the chamber.

Abstract: A ceramic matrix composite (CMC) seal segment for use in a segmented turbine shroud for radially encasing a turbine in a gas turbine engine. The CMC seal segment comprises an arcuate flange having a surface facing the turbine and a portion defining a bore for receiving an elongated pin, with the bore having a length that is at least 70% of the length of the elongated pin received therein. The CMC seal segment is carried by the carrier by at least one of the elongated pins being received within the bore. The CMC seal segment portion defining a pin-receiving bore is radially spaced from the arcuate flange by a spacing flange extending radially outward from the arcuate flange.

Abstract: An impingement manifold includes a fluid inlet passage and a pressurized chamber. The pressurized chamber includes at least one lobe. The at least one lobe includes a flow improving feature configured to minimize vorticity of a flow field within the pressurized chamber, and at least one flow outlet.

Abstract: A gas turbomachine includes a compressor portion, a turbine portion operatively connected to the compressor portion, and a combustor assembly fluidically connected to each of the compressor portion and the turbine portion. A turbine casing includes a body having an outer surface and an inner surface. A clearance control system includes a plurality of fluidically connected fluid channels extending through the turbine casing. The plurality of fluidically connected fluid channels includes a first fluid channel configured to direct a fluid flow in a first axial direction, a circumferential fluid channel configured to direct the fluid flow in a circumferential direction, and a second fluid channel configured to direct the fluid flow in a second axial direction substantially opposite the first axial direction. The first fluid channel includes a first outlet passing through the inner surface, and the second fluid channel including a second outlet passing through the inner surface.

Abstract: A valve monitoring apparatus has a system to determine a state of a valve. The system determines a fluid flow first pressure at a first location within a gas turbine engine, and a second pressure of a compressed fluid at a second location within the engine when the valve is in the first position; and compares the first and second pressures to determine the valve state. The system is arranged to command the valve to move from the first position towards a second position; determine the second pressure of the compressed fluid at the second location; compare the pressure at the second location when the valve is in the first position to the pressure at the second location when the valve has been commanded to move towards the second position; and, determine whether the valve has moved from the first position towards the second position when commanded to do so.

Abstract: A supercharging device, for example an exhaust gas turbocharger, may include a rotor mounted in a housing via an axial bearing. The axial bearing may include an axial bearing disc, a membrane, and a screw connection that secures the axial bearing disc to the membrane through an opening in the membrane. The axial bearing may further include a bush connected to the housing. The membrane may be clamped in between the bush and the housing. An adjusting screw may be inserted into an opening of the bush. The adjusting screw may delimit and/or facilitate an axial movement of the screw connection and the axial bearing disc.

Abstract: An apparatus and method of reducing operating temperatures of a gas turbine engine, exposed to a service tube assembly by utilizing a skirt and radially outer mount. The reduction in temperature exposure minimizes temperatures of the service tube during engine operation to reduce the incidence of oil coking or varnish.

Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders and at least one camshaft for opening at least one valve associated with the at least one cylinder. The camshaft includes a cam with a cam lobe defining a cam lobe profile having a base circle portion on a base circle of the cam lobe, a main cam lobe portion, and a low lift dwell portion that extends a constant height from the base circle along a substantial portion of the base circle to increase valve opening overlap and cylinder scavenging.

Abstract: A coupling pin anti-rotation arrangement is provided for a switchable roller finger follower within a valve train of an internal combustion engine. The coupling pin, located on one of the levers, has a first locking surface, and includes at least one coupling pin-side anti-rotation flat; the other lever, with a second locking surface, is configured with at least one lever-side anti-rotation flat. The at least one lever-side anti-rotation flat slidably guides the at least one coupling pin-side anti-rotation flat such that the first locking surface is aligned with the second locking surface throughout longitudinal displacement of the coupling pin within a coupling pin bore. The coupling pin anti-rotation arrangement is adaptable to various switchable roller finger follower designs that incorporate different valve lift strategies and lever configurations.

Abstract: A valve train assembly includes a rocker arm assembly, and axial shifting cam assembly, and a lost motion device. The axial shifting cam assembly is movable between a first axial position and a second axial position on a camshaft, the cam assembly having a first cam having a first lobe, and a second cam having a second lobe. The first and second lobes are configured to each selectively engage the rocker arm assembly to respectively perform a first and a second discrete valve lift event. The lost motion device is operably associated with the rocker arm assembly and configured to perform a third discrete valve lift event, distinct from the first and second valve lift events.

Abstract: A rocker arm comprising a supply path that communicates with a first lash bore and a first spool bore. A spool is in the spool bore. A hydraulic lash device is in the first lash bore, wherein an outer body is configured to collapse during a first valve lift profile when receiving a low pressure fluid, and wherein the outer body and the inner body are configured to cooperate rigidly when receiving a high pressure fluid during a second valve lift profile. The spool is movable to a first spool position to align the spool notch with a first spool path and a second spool path, and the spool is movable to a second spool position to align the spool notch with the second spool path and an accumulator path. The supply path in to the rocker arm is the only source of fluid to the spool.