Abstract: A method and apparatus for charging a bulk energy storage capacitor, such as used for actuating solenoids in downhole tools. An electrical generator, which may be a mud-powered, provides a rectified voltage proportional to its rotational speed. The rectified voltage is fed to a single-ended primary-inductor converter, which in turn charges the bulk capacitor 16 when the voltage across the bulk capacitor falls between predetermined upper and lower set points. Upon discharging the bulk capacitor, such as from actuation of solenoid valves for creating mud pressure pulses, control logic also causes the converter to cease charging the bulk capacitor 16 to enhance circuit efficiency and performance. A battery may also be provided to charge the bulk capacitor via a current limiter, and a disconnect circuit prevents the battery from charging the bulk capacitor when the generator is charging the bulk capacitor via the converter.

Abstract: A filtering medium for removal of solids from a fluid. A solid filtering matrix contains fluid passages that are made up of a plurality of chambers with connecting channels. The chambers have a greater diameter than the connecting channels.

Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for controlling injection profile. One embodiment provides an injection distribution device. The injection distribution device includes a shield portion and a baffle portion. The baffle portion comprises a first baffle having a plurality of first openings formed therethrough, and a second baffle having a plurality of second openings formed therethrough. At least a portion of the first baffle overlaps with the second.

Abstract: Methods and apparatus are presented for mechanically perforating a tubular positioned in a subterranean wellbore. A plurality of punch members are moved radially outward in response to hydraulic pressure from the tubing or other source into contact with the tubular. Retraction of the punch members is by biasing member or change in hydraulic pressure. A slip assembly, also hydraulically actuated, secures the tool in position during use.

Abstract: The present invention concerns a firing switch for a downhole ballistics device. More particularly, but not exclusively, this invention concerns a firing switch for a downhole ballistics device and a method of operating the firing switch. The invention also concerns various safety features relating to the firing switch. A firing switch arrangement for a downhole perforating gun (26, 28, 30, 32, 34) is provided, and comprises a firing switch (26?, 28?, 30?, 32?, 34?), and a detonator (40), the detonator arranged to be activated in response to an electrical signal from the firing switch. A removable safety tab (42) is associated with the detonator, the removable safety tab arranged to provide a short circuit to the detonator, such that the short circuit is removed if the removable safety tab is removed.

Abstract: There is disclosed a rotary-pad gas lift plunger. In an embodiment, the pads rotate around the mandrel. This rotation movement results from two features. The first one is the assembly of the mandrel and the pad retaining rings. The second one is the shape of the wearing pad. The rotation movement results from the plunger travel up and down within the tubing. Rotation with uniform wearing helps to maintain the sealing effect between the wearing pads and the inside of the tubing. This uniform wearing on the surface of pads improves efficiency to displace oil and water from oil and gas wells. The uniform wearing also causes a significant increase in the service life of the plunger. Because of the rotation movement, this gas lift plunger can operate in deviated wells where a typical gas lift plunger is restricted.

Abstract: A diversion connector is used for a downhole pump having a plunger and a barrel in a well. The diversion connector is useful in a sandy well having particulates. The plunger has an interior and is reciprocated by a rod relative to the barrel. The connector includes one or more bodies, such as a mandrel, attaching the rod to the plunger. The mandrel has a first exterior surface and defines a fluid passage communicating with the interior of the plunger. A sleeve is disposed on the first exterior surface and has an interior surface floating relative to the first exterior surface. The floating sleeve at least partially prevents particulate uphole of the plunger from passing in a gap between the plunger and the barrel.

Abstract: Various embodiments of the present invention disclose enhanced and improved well production tools for increasing the stability of production zones in a wellbore. Various embodiments of the present invention generally relate to apparatuses, systems, and processes for efficiently and effectively isolating zones within a wellbore.

Abstract: The present disclosure provides methods of using a nonionic surfactant for enhanced oil recovery, where the nonionic surfactant is prepared with a double metal cyanide catalyst. The present disclosure also provides for an emulsion that includes carbon dioxide, a diluent and the nonionic surfactant.

Abstract: A method for optimizing well spacing for a multi-well pad which includes a first group of wells and a second group of wells is provided. The method includes the steps of: creating a fracture in a stage in a first well in the first group of wells; isolating a next stage in said first well in the first group of wells from said stage; creating a fracture in said next stage in the first well in the first group after the step of isolating; measuring a pressure by using a pressure gauge in direct fluid communication with said next stage in the first well in the first group of wells; creating a fracture in one or more stages in a well in the second group of wells in a manner such that the fracture in the well in the second group of wells induces the pressure measured in the first well to change; and recording the pressure change in the next stage of the first well.

Abstract: An energy-dissipating device and fluid processing system is provided containing a compressor, a motor, a secondary fluid re-circulation loop, a purge line, and a fluid conduit. The compressor is configured to receive a hot fluid including condensable and non-condensable components, and produce therefrom a primary compressed fluid stream and a secondary fluid stream. The motor is configured to drive the compressor and for ingress and egress of the secondary fluid stream. The secondary fluid re-circulation loop is configured to control an operating temperature of the motor. The secondary fluid re-circulation loop includes a first energy-dissipating device configured to remove excess heat from the secondary fluid stream. The purge line separates a first portion of the secondary fluid stream in the fluid re-circulation loop from a second portion of the secondary fluid stream being returned to the motor. The fluid conduit receives the primary compressed fluid stream from the compressor.

Abstract: Methods, computer-readable media, and systems are disclosed for applying 1D processing in a non-1D formation. In some embodiments, a 3D model or curtain section of a subsurface earth formation may be obtained. A processing window within the 3D model or curtain that is suitable for 1D inversion processing is determined, and a local 1D model for the processing window is built. A 1D inversion is performed on the local 1D model, and inverted formation parameters are used to update the 3D model or curtain section.

Abstract: Apparatuses, methods, and systems are described which assist in controlling toolface orientation of a bottom hole assembly. A controller instructs a top drive to oscillate a drill string an oscillation revolution amount to reduce friction of the drill string in a wellbore during a slide drilling procedure. A torque sensor detects torque at an interface between the drill string and the top drive, and the controller determines properties of a torsional wave from the detected torque that is propagating along the drill string during the slide drilling procedure. The controller determines a modification to the oscillation revolution amount and/or rotations per minute in order to control the toolface orientation in a desired manner. The top drive implements the determined modification and thereby assists in controlling the toolface orientation during the slide drilling procedure.

Abstract: A technique facilitates monitoring of parameters along the exterior of a tubing/casing deployed in a borehole. An array of sensors is positioned outside of the tubing/casing and within a borehole wall. The array of sensors is coupled to a surface via a communication line routed through an inductive coupler system. The inductive coupler system has a first inductive coupler member located at an outside position and a second inductive coupler member located at an inside position with respect to the tubing/casing. The arrangement enables real-time monitoring of events outside of the tubing/casing.

Abstract: Riser stress-engineering-assessment equipment to verify the integrity and the in-deployment-integrity of a riser string by knowing the status, details and location of each riser joint and by monitoring the deployment parameters. When the failure risk exceeds an acceptable level, the equipment activates a local and/or a remote alarm using voice, sound and lights. The system comprises a computer with communication means, a material properties and geometry detection system, a data acquisition system acquiring deployment and other parameters, a database comprising of riser historical data and captured expert knowledge, a failure-criteria calculation to calculate maximum-stresses under different loads and the combined effects of the different loads to determine if the riser string is still fit-for-deployment.

Abstract: Methods and assemblies that can be used to orient a second pipe with respect to a first pipe in a wellbore are disclosed. The first pipe may be a casing string that includes one or more recessed latch couplings, and the second pipe may be a tubing string that includes one more complementary radially extendable latch keys that may be received within the latch couplings. The tubing string may include one or more switches associated with the latch keys that are actuated when the latch keys are received within the latch couplings. The actuation of the switches is communicated to an operator at the surface via control lines within the tubing string.

Abstract: A wellbore assembly is provided that can include a first motor housing assembly member and a second motor housing assembly member that can bend relative to the first motor housing assembly at a bend location. The assembly can also include a first inclinometer positioned on a sembly side of the bend location to determine a first inclination and a second inclinometer positioned on a second side of the bend location to determine a second inclination. Based on the first and second inclinations, the amount of bend or bend direction of the second motor housing assembly member relative to the first motor housing assembly member can be determined.

Abstract: A wellbore ranging system and method utilized between first and second wellbores includes an electromagnetic field sensing instrument disposed in the second wellbore, a conductive casing in the first wellbore, an electric current source exciting current flow in the conductive member, and a fiber optic sensor disposed adjacent the conductive member. The current flow along the conductive member results in a magnetic field which is measured by the sensing instrument. The fiber optic sensor includes a core that is responsive to the magnetic field in which it is disposed. The responsive core alters the optical property of an optical wave guide forming the sensor, which altered optical property can be utilized to measure the magnitude of the electrical current at the position of the sensor. The magnitude of the current and the measured magnetic field can be utilized to determine a range between the first and second wellbores.

Abstract: There is provided a thin-bottom type bore gauge having damping unit between a gauge head and a head main body part, and a long life. A head part of a bore gauge includes a head main body part, a measurement spherical face at one end face, and a gauge head slidably provided by penetrating an inside and an outside of the head main body part. The gauge head a spring holding groove carved in a circumferential direction at the other end side, and a compression coil spring is interposed between the spring holding groove and an inside end face of the head main body part.

Abstract: A downhole tool includes a position system. The position system includes a hub moveably coupled to a fixed tool string. The hub includes a sensor component. The position system also includes a position sensor disposed within the fixed tool string and segregated from the sensor component. Additionally, the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.

Abstract: A well monitoring system particularly useful in detecting kicks in the well includes a well, a well system, and a computing apparatus. The well defines a wellbore and the well system includes at least one sensor measuring at least one well condition. The computing apparatus hosts a well monitoring software component that performs a method to detect a kick in a well. The method includes: storing a set of real-time data from a measurement of a well condition by the sensor, the measurements being correlative to an unplanned fluid influx into the well; modeling the operation of the well with a physics-based, state space model of the well system to obtain an estimate of the well condition; and applying the real-time data set and the estimate to a probabilistic estimator to yield a probability of an occurrence of a kick and a confidence measure for the probability.

Abstract: A system for drilling a subterranean wellbore includes a bottom hole assembly (BHA) coupled to a downhole end of a drill string. The BHA includes an electronic controller having a processor. The drill string includes downhole and uphole portions with the downhole portion made up of wired drill pipe and the uphole portion made up of non-wired drill pipe. The downhole portion further includes at least one downhole tool or sensor sub in communication with the BHA via the wired drill pipe communication link. Methods for making sensor measurements, downlinking data and/or commands to the BHA, and actuating a downhole tool make use of the system.

Abstract: A system for delivering a fiber optic slickline through a deviated well with a battery powered tractor. The system includes a tractor having an efficiency rating of at least about 30% so as to adequately serve as a conveyance aid without the requirement of surface supplied power. For example, regulating of drive sections of the tractor may take place through a hydraulic section. Thus, arms of the tractor may be hydraulically locked in an open position without the requirement of continuous power to maintain the arms in an open position. At the same time, however, the hydraulic section may include accumulator capacity so as to allow for temporary responsive collapse of the arms for sake of navigating a restriction in the well.

Abstract: The invention is a petroleum well downhole logging tool (0) comprising—a wireline telemetry controller unit (6) comprising—a downhole modem (61) for transmitting data at a first bitrate uplink on a wireline (8) to a surface telemetry unit (106) connected to a surface read-out unit (SRO) with a memory (123)), a server toolbus controller (62) connected between said downhole modem (61) and an internal tool databus (7) operating at a second bitrate (r2) higher than the first bitrate;—one or more logging tools (4) each with sensors (40a, 40b, 40c, . . .

Abstract: A system and method for estimating properties of a hydrocarbon-producing formation includes varying the pressure in one or more first wellbores and analyzing the effect of the pressure variations in one or more second wellbores. The analysis may be accomplished by applying the pressure variations at varying timescales to enable the testing of multiple paths through the formation at the same time. The analysis may be used to estimate properties of the formation and a field that includes multiple well sites or potential well sites. The analysis may be used to enhance the operation of one or more of the wells and to identify potential future well sites.

Abstract: The present invention relates to a method for determination of fluid characteristics in a well, by receiving mass ratios and a molecular ratio; converting the mass ratios into molecular ratios based on predetermined molecular weights; normalizing the converted molecular ratios with the received molecular ratio; minimizing a difference between the normalized molecular ratio and an associated member or an associated sum of members; computing an estimated molecular weight (Mw6+) function of (k+11???M; and if a stabilization criteria is met, the steps are iterated with the estimated molecular weight as one of the predetermined molecular weights.

Abstract: A disclosed measurement system includes a fluid system that circulates a sample fluid exhibiting one or more unknown characteristics and being configured to receive a standard fluid that exhibits a known characteristic corresponding to at least one of the one or more unknown characteristics, an isolation cell fluidly coupled to the fluid system such that the sample fluid and a mixture of the sample fluid and the standard fluid are able to enter the isolation cell, an analyte-sensitive measurement device having one or more sensors associated therewith and being configured to analyze the sample fluid and the mixture and generate response signals corresponding to the one or more unknown characteristics of the sample fluid, and a signal processor configured to receive and perform standard addition calculations on the response signals in order to determine a concentration of the one or more unknown characteristics.

Abstract: An extendable probe for a formation testing tool includes a piston housing having a first diameter portion and a second diameter portion thereof. A piston including a piston base and a piston conduit. A piston base seal disposed between the piston base and the first diameter portion of the piston housing. The piston base seal representing an area; a piston conduit seal disposed between the piston conduit and the second diameter portion, the piston conduit seal representing an area. A pin in operative communication with the piston housing and extending though the piston; a pin seal disposed between the pin and the piston base, the pin seal representing an area; and wherein the piston conduit seal. Piston base seal and pin seal each are configured to adhere to the equation: piston conduit seal area=piston base seal area?pin seal area. A method for querying a formation fluid.

Abstract: A mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine and adapted for receiving a cutting tool includes: a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a bore; and a tool holder configured for mounting to the base. The tool holder includes: a leading head region having a forward face that defines an aperture for receiving the cutting tool; a trailing shank region with a central longitudinal axis and having an axial forward end and an axial rearward end; and a mediate region intermediate of and contiguous with the leading head region and the trailing shank region. The trailing shank region includes an anti-rotation portion and a mounting retention portion.

Abstract: A mine rib support includes first and second elongate members each having a first end and a second end, a center plate having a body defining a first opening that receives the first elongate member, a second opening that receives the second elongate member, and an installation opening configured to receive a mine bolt, a first end plate defining first and second openings for receiving the first end of the first and second elongate members, respectively, and a second end plate defining first and second openings for receiving the second end of the first and second elongate members, respectively.

Abstract: A conveyance machine that conveys a load, the conveyance machine includes: a traveling unit; a vehicle body arranged above the traveling unit; a vessel provided on the vehicle body; a first detecting unit that detects a loading machine that loads a load on the vessel; and a processing unit that adjusts a position of the vessel according to a detected result of the first detecting unit so as the vessel to be positioned at a loading point where the loading machine performs loading.

Abstract: The present invention relates to a structure of an axial-type multistage turbine. To this end, the present invention provides the structure of the axial-type multistage turbine including a mixed-type turbine (100) having an inner part filled with a fluid, and the mixed type turbine comprises: a body (101) having a space part (105) in which a fluid is filled, and an inlet (102) and an outlet (103) respectively formed at an upper end and a lower end thereof; a rotary shaft (140) provided in a center of the body (101) to be rotated at a high speed and having a discharging hole (107); at least one first rotational blade (110) provided to be integrated with the rotary shaft (140); a plurality of second rotational blades (120) provided to be integrated with the rotary shaft (140) at a predetermined interval; and the body (101) comprising a reception hole (106) formed inside the upper end thereof and a plurality of fixing blades (130) provided to be fixed at a lower end of the body.

Abstract: Aspects of the disclosure are directed to applying a plating solution to a base material of a notch associated with a shroud section of a turbine blade, and applying an electrical signal to the plating solution to cause a deposition of material onto the base material to form a composite.

Abstract: An electronically-controlled turbocharger (ECT) includes an electric machine provided on the shaft of the turbomachine. It is desirable to mount the electric machine on the shaft in such a way that it can be removed for servicing. Disclosed herein is an ECT in which the rotor of the electric machine is retained on the shaft by a nut that is used to snug up the rotor against a shoulder on the shaft. Alternatively, the shaft and the rotor have a taper and the nut is used to cause the interior taper of the rotor is caused to engage with the exterior taper of the shaft. In yet another alternative, the rotor has fingers that engage with splines on the shaft. In some embodiments, to help prevent relative rotation of the shaft and the rotor, one or both of mating surfaces are roughened to increase the friction between the surfaces.

Abstract: A balance ring for a gas turbine engine has a ring shaped body with a first radial thickness, an anti-rotation tab extending outward from the body and at least one millable balancing feature connected to the body.

Abstract: A rotating component for a turbine engine includes a rotor portion protruding radially outward, at least one overweight region is located in the rotor portion, and at least one additively manufactured counterweight region is positioned relative to the at least one overweight region such that the rotating component is circumferentially balanced.

Abstract: A method of fabricating a finished part may comprise creating an unfinished part using a primary metal fabrication process, wherein the primary metal fabrication process leaves a surface deformation on the unfinished part, and removing the surface deformation from the unfinished part using a secondary metal fabrication process, wherein the secondary metal fabrication process further creates the finished part from the unfinished part. The disclosed method may save manufacturing steps and increase production accuracy.

Abstract: A gas turbine engine blade (10), including a base portion (12) having a cast wall, and a tip portion (14) attached to the base portion and having a wall (60) formed by an additive manufacturing process. The tip portion wall may be formed to be solid and less than 2 mm in thickness, or it may be corrugated and be greater than 2 mm in thickness. Openings (80) defining the wall corrugations may be semi-circular, rectangular, trapezoidal, or elliptical in cross-sectional shape. The resulting blade has lower tip mass while retaining adequate mechanical properties. The tip portion may be formed to have a directionally solidified grain structure on a base portion having an equiaxed grain structure.

Abstract: A method includes building an article by a layer-by-layer additive manufacturing process. While the article is being built, a solid outer wall is formed. An inner structure of the article is integrally formed with the outer wall. The inner structure includes an internal permeable structure.

Abstract: The invention relates to a blade for a turbomachine a shroud for such a blade, and a turbomachine having at least one such blade. The blade comprises a shroud which is positioned on the blade tip side of the blade and is stiffened in the region of its surface by means of a stiffening structure having at least one longitudinal stiffening element such as a rib. The height of the longitudinal stiffening element varies in the circumferential direction.

Abstract: A non-metallic vertical turbine pump and a method of manufacturing same are provided. In accordance with one embodiment, the vertical turbine pump can include a motor, and a drive shaft coupled to the motor for rotation, a casing with a mixed flow diffuser including a diffuser hub and diffuser vanes that project out from the diffuser hub, and a mixed flow impeller configured to rotatably fit inside the casing, having an impeller hub, impeller vanes, extending from the hub, and a front and a back shroud connected to opposing ends of the impeller vanes. At least one of the mixed flow impeller and the mixed flow diffuser can be made of a non-metallic material and is a singular homogenous component.

Abstract: A modified blade tip with abrasive coating comprising a blade having a tip with a center between corners proximate a leading edge and a trailing edge, the blade having a top surface, the top surface being modified proximate said corners. The abrasive coating is bonded to the tip at the top surface; wherein the abrasive coating is thicker proximate the corners than at the center of the blade tip.

Abstract: An abrasive blade tip coating comprising a blade tip having a top surface. A plurality of first grit particles are dispersed over the top surface of the blade tip. A plurality of second grit particles are closely packed between each of the plurality of first grit particles. The second grit particles having a nominal size smaller than the first grit particles. A matrix material is bonded to the top surface. The matrix material envelops the second grit particles. The matrix material is also bonded to and partially surrounds the first grit particles, wherein the first grit particles extend above the matrix material and the second grit particles relative to the top surface.

Abstract: A turbine blade having an airfoil and a fir tree root is disclosed. The fir tree root has a lengthwise direction, a crosswise direction extending between two lateral sides of the fir tree root, and a span direction extending from a root base towards an airfoil tip. The fir tree root includes a web interposed between each pair of at least two neighboring channels. For each web, a web-to-channel ratio with each of the two neighboring channels is chosen to be larger than or equal to 0.5 and is smaller than or equal to 0.85 at least at a position where the root width is a minimum load bearing root width in a load bearing section of the fir tree root. In another aspect, overall web-to-channel ratio is defined as a ratio between the sum of all web lengths and the sum of all channel lengths.

Abstract: Systems and methods are provided related to manufacturing, repairing or otherwise providing an integrally bladed rotor. In one method, a set of preform rotor blades are arranged relative to a rotor disk. The preform rotor blades are concurrently bonded to the rotor disk.

Abstract: A spacer for use in a hub and blade assembly of a gas turbine engine including a first layer of a first material forming the spacer body having an elongate shape. The first material has a first stiffness. A second layer of a second material is mechanically attached to the first layer. The second material has a second stiffness different from the first stiffness.

Abstract: A structural panel for use with a gas turbine engine includes a first exterior wall, a second exterior wall, and interior walls. The first exterior wall includes a first exterior surface and a first interior surface parallel to the first exterior surface. The second exterior wall includes a second exterior surface and a second interior surface parallel to the second exterior surface. The interior walls extend from the first interior surface to the second interior surface. The interior walls are arranged to form a pattern of hexagonal cells. The pattern of hexagonal cells includes cell groups having a variation in structural strength such that at least one of the cell groups has a structural strength that is not the same as the remaining cell groups.

Abstract: A gas turbine engine component comprises a casing, and a component fixed to the casing to extend from a first edge to a second edge. The component has a first side and a second side. A trench is formed within the casing adjacent the second side of the component. The trench has a maximum depth that is positioned at or aft of the first edge.

Abstract: A Variable Turbine Geometry (VTG) turbine turbocharger comprises a turbine wheel in a housing, and a compressor wheel coupled to the turbine wheel with a main shaft. The turbocharger additionally includes a VTG assembly in the housing, an actuator outside the housing, and an actuation pivot shaft that extends through an opening of the housing and connects the VTG assembly to the actuator. A face seal assembly seals the opening, and includes an inner ring member rotationally fixed on the pivot shaft, a disc member, and a spring seal. The disc member includes a first face that forms a seal with a surface of the housing, and is rotationally fixed to, while being movable axially relative to, the inner ring member. The spring seal seals the inner ring member and the disc member, and applies a seating force against the disc member.

Abstract: A vane seal system includes a first non-rotatable vane segment that has a first airfoil with a first pocket at one end thereof. A second non-rotatable vane segment includes a second airfoil with a second pocket at one end thereof spaced by a gap from the first pocket. A seal member spans across the gap and extends in the first pocket and the second pocket. The seal member includes a seal element and at least one spring portion configured to positively locate the seal member in a sealing direction. Also disclosed is a seal for a vane seal system and a method related thereto for damping relative movement between a first pocket and a second pocket.