| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175107000 | Fluid rotary type | 49 |
| 20090152009 | Nano particle reinforced polymer element for stator and rotor assembly - A nano particle reinforced polymer element of a stator and rotor assembly for a power section of a positive displacement fluid motor or a progressive cavity pump. Nano-sized particles are blended with an uncured polymer to improve the physical and chemical properties of the polymer. The use of nano-sized particles reduces the quantity of reinforcement material required to manufacture the polymer for the stator and rotor assembly and lowers the viscosity of the uncured polymer to improve manufacturing characteristics. The use of chemically functionalized nano particles improves the chemical and physical characteristics of the polymer. | 06-18-2009 |
| 20090229883 | Flow Guide Actuation - In one aspect of the present invention, a downhole drill string assembly comprises a bore there through to receive drilling fluid. A turbine may be disposed within the bore and exposed to the drilling fluid. At least one flow guide may be disposed within the bore and exposed to the drilling fluid wherein the flow guide acts to redirect the flow of the drilling fluid across the turbine. The flow guide may be adjusted by an actuator. Adjustments to the flow guide may be controlled by a downhole telemetry system, a processing unit, a control loop, or any combination thereof. In various embodiments the turbine may comprise rotatable turbine blades. | 09-17-2009 |
| 20090272581 | LOAD DISTRIBUTION FOR MULTI-STAGE THRUST BEARINGS - A drilling motor includes an upper end connection adapted to connect to a drill string, and a lower end connection adapted to connect to a drill bit, a thrust bearing assembly having a plurality of stages assembled in a stack, each stage including at least one rotating inner bearing subassembly configured to contact at least one corresponding stationary outer bearing subassembly, wherein axial loads among the plurality of stages are substantially equal under normal operating conditions. | 11-05-2009 |
| 20100006342 | METHOD OF MAKING WELLBORE MOINEAU DEVICES - A method of making a drilling motor for use in a wellbore includes defining a profile for an inner surface of a stator; configuring at least one cutting element on a support to at least partially form the profile; translating the support through a bore of the stator such that the at least one cutting element engages the inner surface of the stator; and forming a helical passage using the at least one cutting element by causing relative rotation between the stator and the support. | 01-14-2010 |
| 20100038142 | APPARATUS AND METHOD FOR HIGH TEMPERATURE DRILLING OPERATIONS - An apparatus ( | 02-18-2010 |
| 20100065334 | Turbine Driven Hammer that Oscillates at a Constant Frequency - In one aspect of the present invention a hammer assembly comprises a substantially coaxial jack element with a distal end extending beyond a working face of a drill bit. A porting mechanism within the bore comprises a first and second disc substantially contacting along a flat interface substantially normal to the axis of rotation. The first disc is attached to a turbine which is adapted to rotate the first disc with respect to the second disc. The first disc comprises a first set of ports adapted to align and misalign with a second and third set of ports in the second disc. As the first disc rotates, the sets of ports are adapted to route a drilling fluid into a piston chamber where the porting mechanism causes the jack element to repeatedly extend further beyond the working surface of the drill bit at a constant frequency. | 03-18-2010 |
| 20100089653 | ISOLATION SYSTEM FOR DRILLING SYSTEMS - In at least one example, an isolation system includes at least one air bladder assembly including at least one air bladder and at least one coupling member coupling the air bladder to a drill head, wherein the air bladder is configured to compress and expand to counter oscillating forces generated by the drill head. | 04-15-2010 |
| 20100108393 | DOWNHOLE MUD MOTOR AND METHOD OF IMPROVING DURABILTY THEREOF - Disclosed herein is a downhole mud motor. The mud motor includes, a stator, a rotor in operable communication with the stator, a polymer in operable communication with the stator and the rotor, and a plurality of carbon nanotubes embedded in the polymer. | 05-06-2010 |
| 20100116554 | Turbo-gear for speedy drilling wells - A turbo-gear supplied with operating fluid for driving a drill bit is proposed. It preferably comprises a non-rotatable casing, an upper shaft rotatably mounted in the casing, coupled with blades configured to receive pressure of the operating fluid causing rotation of the upper shaft, a lower shaft mounted in the casing, having inside a cylindrical channel, an intermediate shaft rotatably mounted in the casing, disposed below the upper shaft and above the lower shaft. The shafts are associated with each other through conventional gears having predetermined transmission coefficients. The inner space of the turbo-gear is configured to pass the operating fluid therethrough. Preferably, the turbo-gear is combined with a bushing-connector shaped as a hollow cylinder, having means for assembling with the turbo-gear and the bit. The turbo-gear is assembled with a non-rotatable string of pipes, through which the operating fluid is supplied. The turbo-gear allows extending the lifespan of pipes. | 05-13-2010 |
| 20100175925 | PUMP CONTROL FOR FORMATION TESTING - A while-drilling tool comprising a motor, a transmission coupled to the motor, and a pump comprising a first piston disposed in a first chamber and a second piston disposed in a second chamber and coupled to the first piston. A planetary roller-screw is coupled between the pump and the transmission. A valve block is configured to fluidly communicate with the first and second pump chambers, a borehole in which the while-drilling tool is configured to be positioned, and a formation penetrated by the borehole. | 07-15-2010 |
| 20100187014 | Thrust Bearing Assembly - A thrust bearing assembly comprising a rotating bearing runner and a stationary bearing carrier, the carrier defining a plurality of thrust pad sites annularly around the carrier, with a thrust pad disposed at a site and with the carrier constraining movement of the thrust pad in a direction generally radial to the longitudinal axis of the runner while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis. An embodiment comprises a rotating bearing runner having a wear resistant face and a stationary bearing carrier defining cavities disposed annularly around the carrier. A deflection element (e.g., Belleville washer) is disposed in a cavity and a pad is disposed over the deflection element. The pad is at least partially disposed within the cavity. The wear resistant face contacts the pad. Another embodiment rigidly connects pads disposed on opposite sides of a stationary bearing carrier. | 07-29-2010 |
| 20100288559 | METHOD AND DEVICE FOR MANUFACTURING A DOWN HOLE MOTOR RADIAL BEARING - The present invention concerns the down hole motors used in the oil prospecting industry to drive drill bits for drilling the ground at great depths. The down hole motor ( | 11-18-2010 |
| 20100307833 | JET TURBODRILL - A turbine drill motor capable of operation at ultra-high rotary speeds (i.e., in excess of 1000 rpm, which is very high for turbine drill motors), with a high-pressure jet-assist functionality for drilling and well service applications. The ultra-high rotary speed enables fast penetration with diamond bits, while the high-pressure jet-assist ensures adequate cooling and cuttings removal. In an exemplary embodiment, such a turbine drill motor includes a bypass channel to divert a portion of the driving fluid supply when the bit is off-bottom, to limit the no-load runaway speed of the turbine. Serial and parallel flow paths can be accommodated, and different drill bits for cutting and well-bore servicing are disclosed. | 12-09-2010 |
| 20110073374 | Flow Pulsing Device for a Drilling Motor - A downhole flow pulsing device comprises a housing connected in series with a drill string and a valve with a rotating portion in the housing arranged to vary an area of a flow passage through the housing. A fluid actuated positive displacement motor drives rotation of the valve. A drive link permits the rotating portion of the valve to be optionally coupled directly to the motor of the drill string. The valve includes radially oriented rotating ports intermittently communicating with surrounding fixed ports and a bypass channel. Axial displacement of the rotating ports relative to the fixed ports and bypass channel permits amplitude of the downstream fluid pulses to be adjusted. The valve includes a number of circumferentially spaced ports which differs from a prescribed number of pressure fluctuations in the fluid for each full rotation of the rotor of the drill motor. | 03-31-2011 |
| 20110083903 | DRILLING MACHINE POWER PACK WHICH INCLUDES A CLUTCH - A drilling machine includes a compressor coupled to a prime mover through a hydraulic clutch, wherein the hydraulic clutch is repeatably moveable between engaged and disengaged conditions. The compressor is allowed to provide air and is restricted from providing air in response to the hydraulic clutch being in the engaged and disengaged conditions, respectively. The hydraulic clutch is moveable between the engaged and disengaged conditions during operation of the prime mover. | 04-14-2011 |
| 20110120776 | HYDRODYNAMIC BEARING ASSEMBLIES, AND HYDRODYNAMIC BEARING APPARATUSES AND MOTOR ASSEMBLIES USING SAME - Hydrodynamic bearing assemblies and apparatuses are disclosed. Such hydrodynamic bearing assemblies may be employed in bearing apparatuses for use in downhole motors of a subterranean drilling system or other mechanical systems. In one embodiment of the present invention, a hydrodynamic bearing assembly includes a plurality of bearing elements distributed circumferentially about an axis. Each bearing segment includes a superhard bearing surface. The plurality of bearing elements defines a plurality of seams. Each seam is formed between circumferentially-adjacent bearing elements of the plurality of bearing elements. Further embodiments of the present invention include hydrodynamic bearing apparatuses and downhole motors that may utilize any of the disclosed hydrodynamic bearing assemblies. | 05-26-2011 |
| 20110147091 | DOWNHOLE MOTOR - A downhole motor having a motor section, a drive shaft section, and an output shaft section, the output shaft section having a rotatable output shaft with a first end and a second end, a first thrust bearing assembly proximal to the first end of said output shaft, a second thrust bearing assembly proximal to second end to said output shaft and a radial bearing assembly disposed between the first and second thrust bearing assemblies. | 06-23-2011 |
| 20110180329 | SYSTEMS AND METHODS FOR PROVIDING A GEARLESS DRILLING TURBINE - A drilling sub assembly adapted to be coupled between a drill bit of a drilling rig and a drill pipe, the drilling sub assembling including a turbine unit directly coupled to the drill bit via a mandrel, such that passage of a drilling fluid through the drilling sub assembly rotates the turbine unit which in turn directly rotates the drill bit coupled thereto. The present invention further relates to a baffle for controlling and reducing debris present within a drilling fluid used in combination with the drilling sub assembly. | 07-28-2011 |
| 20110192648 | Bearing Assembly for Downhole Motor - A downhole motor for drilling and servicing of wells has an elongated outer housing and an elongated mandrel rotatably disposed within the housing. A primary thrust bearing is disposed between the lower end of the housing and the mandrel, and transfers axial loads downward from the housing to the mandrel, and thence to the drill bit or other tool mounted on the lowermost end of the mandrel. The placement of the primary thrust bearing permits it to extend radially to the outer diameter of the housing. One preferred embodiment of the primary thrust bearing comprises bearing surfaces of polycrystalline diamond compact (“PDC”) material. | 08-11-2011 |
| 20110315451 | DRIVE SYSTEM FOR A DOWNHOLE TOOL - A turbine drive system ( | 12-29-2011 |
| 20120018227 | COMPONENTS AND MOTORS FOR DOWNHOLE TOOLS AND METHODS OF APPLYING HARDFACING TO SURFACES THEREOF - A component for a downhole tool includes a rotor and a hardfacing precursor. The hardfacing precursor includes a polymeric material, hard particles, and a metal. A hydraulic drilling motor includes a stator, a rotor, and a sintered hardfacing material on an outer surface of the rotor or an inner surface of the stator. Methods of applying hardfacing to surfaces include forming a paste of hard particles, metal matrix particles, a polymeric material, and a solvent. The solvent is removed from the paste to form a sheet, which is applied to a surface and heated. A component for a downhole tool includes a first hardfacing material, a second hardfacing material over the first hardfacing material and defining a plurality of pores, and a metal disposed within at least some of the pores. The metal has a melting point lower than a melting point of the second hardfacing material. | 01-26-2012 |
| 20120018228 | Method and Apparatus for Transforming a Pressure Drop into a Continuous Fluid Flow - An apparatus energizes a consumer of a pressurized fluid using a high pressure source and a low pressure source. The apparatus may include a fluid circuit in fluid communication with the consumer. The fluid circuit may have a first and a second reservoir. In one arrangement, the fluid circuit may have a flow control device in pressure communication with the first pressure source and the second pressure source, the flow control device being configured to cycle a pressure applied to the first and the second reservoirs using the first pressure source and the second pressure source. In some arrangements, the fluid circuit may include a flow device configured to flow fluid from a second branch to a first branch of the reservoir, and a flow control device in fluid communication with the flow device, the flow control device being configured to cycle a pressure applied to the flow device. | 01-26-2012 |
| 20120118647 | DOWNHOLE MUD MOTOR AND METHOD OF IMPROVING DURABILTY THEREOF - A downhole mud motor includes, a stator, a rotor in operable communication with the stator, and a plurality of nanoparticles embedded in at least a portion of the stator | 05-17-2012 |
| 20120325561 | Housing, Mandrel and Bearing Assembly for Downhole Drilling Motor - A downhole housing, mandrel and bearing assembly | 12-27-2012 |
| 20130014995 | Downhole Motor with Diamond-Like Carbon Coating on Stator and/or RotorAANM Scott; Dan E.AACI MontgomeryAAST TXAACO USAAGP Scott; Dan E. Montgomery TX USAANM Lin; ChihAACI HuntsvilleAAST TXAACO USAAGP Lin; Chih Huntsville TX US - In aspects, the disclosure provides a drilling motor that includes a stator and a rotor disposed in the stator, wherein the inner surface of the stator and/or outer surface of the stator includes a coating of a diamond-like carbon material. | 01-17-2013 |
| 20130092445 | Bearing Assembly for Downhole Motor - A downhole motor for drilling and servicing of wells has an elongated outer housing and an elongated mandrel rotatably disposed within the housing. A primary thrust bearing is disposed between the lower end of the housing and the mandrel, and transfers axial loads downward from the housing to the mandrel, and thence to the drill bit or other tool mounted on the lowermost end of the mandrel. The placement of the primary thrust bearing permits it to extend radially to the outer diameter of the housing. One preferred embodiment of the primary thrust bearing comprises bearing surfaces of polycrystalline diamond compact (“PDC”) material. | 04-18-2013 |
| 20130180781 | Turbine Driven Reaming Bit with Profile Limiting Torque Fluctuation - A reaming bit designed to operate with low torque fluctuation when driven with a turbine at speeds in the order of 300-600 RPM and above features a profile that is arcuate from the gauge dimension to the nose area or alternatively has a blunt straight taper section but with a ratio of profile length (PL) to bit size (BS) of under 0.75. The blades extend into a concave cone and the cutting structure continues along the blades towards the center. The blades have a step near the gauge section to increase the exposure of the blade cutting structure. An array of protrusions are disposed parallel to and behind the cutting structure to increase high speed stability and adjacent the blade step transition to protect outer casing on run in. | 07-18-2013 |
| 20130228381 | Wired or Ported Universal Joint for Downhole Drilling Motor - A bottom hole assembly for a drill string has a mud motor and a mandrel. The motor has a rotor and a stator, and the rotor defines a bore for passage of conductors. The mandrel has a bore for passage of the conductors and for drilling fluid, and rotation of the mandrel rotates a drill bit. A shaft and universal joints covert orbital motion at the rotor to rotational motion at the mandrel. To pass the conductors from a sonde uphole of the motor to electronics disposed with the mandrel, an inner beam disposes in a bore of the shaft. This inner beam has an internal passage for the conductors, and seal caps dispose on each end of the inner beam to seal inside the universal joints. The inner beam and seal caps prevent drilling fluid passing from the motor and around the shaft from communicating in the shaft's bore. | 09-05-2013 |
| 20130313023 | BEARING APPARATUSES AND MOTOR ASSEMBLIES USING SAME - Bearing assemblies and apparatuses are disclosed. Such bearing assemblies may be employed in bearing apparatuses for use in downhole motors of a subterranean drilling system or other mechanical systems. In an embodiment of the present invention, a bearing apparatus includes a first bearing assembly including a first substantially continuous polycrystalline diamond bearing surface defining an annular surface, and a second bearing assembly including a second substantially continuous polycrystalline diamond bearing surface defining an annular surface. The second substantially continuous polycrystalline diamond bearing surface generally opposes the first substantially continuous polycrystalline diamond bearing surface. | 11-28-2013 |
| 20130333948 | Generating Fluid Telemetry - A downhole tool includes a tool body, stator, and rotor. The tool body is aligned along a tool centerline and includes an aperture therethrough operable to pass a fluid to an exterior of the body. The stator is fixed relative to the tool body and includes a fluid flow restriction operable to pass at least a portion of the fluid from an interior of the stator to the exterior of the body at an adjustable flow rate. The rotor is disposed within the tool body and rotatable relative to the stator and includes an exhaust port selectively aligned with at least one aperture through the tool body by rotation of the rotor relative to the stator. The exhaust port is operable to pass at least a portion of the fluid from an interior of the rotor to the exterior of the body when aligned with the aperture. | 12-19-2013 |
| 20140054091 | COATINGS FOR FLUID ENERGY DEVICE COMPONENTS - A coated component for use in a fluid energy device includes a coating system with multiple layers of coating material, including a soft material such as a polymer coated over a hard material such as a metal. The fluid energy device can be a fluid motor or fluid pump, and the coated component can be a rotor or a stator. The hard and soft materials may be interlocked with each other and/or with an interposed porous layer. The presence of the soft material can reduce or eliminate the need for meticulous polishing operations typically required with as-applied hard materials while improving the longevity of mating fluid energy device components. The mating components are exposed only to the soft material in the initial stages of operation, after which the soft material wears away to gradually expose the mating components to the hard material in a less abrasive manner. | 02-27-2014 |
| 20140054092 | Rotary jet bit for jet drilling and cleaning - A jet bit ensures precise drilling of holes through the earth's surface, such as drainholes around a well. The jet bit has front rotating orifices and jets to drill a hole in a medium larger than the diameter of the bit. The orifices directed to the rear provide thrust to propel the bit forward by enlarging the drainhole. A stationary shroud extends beyond the front orifices to maintain the front jets rotation. The jet bit may include turbine to control rotation rate and torque on front jets containing rotating shafts. A jet bit can be small enough to turn in a radius of four (4) inches from a vertical wellbore to create a horizontal drainhole. Various mechanical cutters can be mounted on the front of the jet bit to enable cutting with both jets and mechanical cutters. | 02-27-2014 |
| 20140060936 | MOTOR AND ROTOR CATCH ASSEMBLY - A motor and rotor catch assembly for preventing loss of broken motor parts downhole. The assembly comprises a motor including a rotor supported inside a stator housing. A rotor bolt is connected to the upper end of the rotor, and is supported for axial movement within a rotor bolt housing from a running position to a deployed position. If the stator housing breaks or backs off, the attached rotor bolt shifts to the deployed position. In the deployed position, the bolt substantially reduces flow to the stator housing and simultaneously opens bypass ports to vent fluid to the annulus instead. In this way, the rotor is prevented from spinning rapidly, the diverted fluid creates a pressure change that alerts the operator to the motor failure, and the diverted fluid allows continued removal of debris and cuttings from the well bore. | 03-06-2014 |
| 20140116785 | Turbodrill Using a Balance Drum - A turbodrill using a balance drum. The turbodrill may include a housing having an upper end that is configured to be coupled to a drill string. The turbodrill may also include a rotatable shaft having a lower end configured to be coupled to a drill bit. The turbodrill may further include a balance drum assembly coupled to the shaft within the housing. In addition, the turbodrill may include a compliant mounting disposed between the balance drum assembly and the housing, where the compliant mounting is configured to allow displacement of the balance drum assembly within the housing. | 05-01-2014 |
| 20140262530 | Adjustable Mud Motor Housing Assembly - An adjustable housing assembly is provided, which includes a splined housing and an adjusting ring which contain a splined mandrel. The splined mandrel is moveable axially within the housing assembly when disengaged from upstream and downstream portions of a drill string to disengage the mandrel from the splined housing. The splined mandrel is rotatable with the adjusting ring to alter angled interfaces between the components to change the bend angle in the housing. | 09-18-2014 |
| 20150068810 | Apparatus for Preventing Separation of Downhole Motor from Drillstring - A separation catch mechanism disposed above a power section of a motor prevents full separation of lower components of the motor from upper components and an attached drillstring. An extension of the mechanism has a first end coupled to the rotor and has a second end disposed in a housing member beyond a seat. An expandable shoulder, such as a washer, disposed on the second end of the extension can be expanded thereon to engage the seat should housing components separate from one another on the motor. To expand the washer after being inserted during assembly past the seat, the second end of the extension has a tapered head on which the washer is disposed. The outside diameter of the washer is expanded on the tapered head by tightening a nut against the washer. | 03-12-2015 |
| 20150068811 | DOWNHOLE MOTOR WITH CONCENTRIC ROTARY DRIVE SYSTEM - A downhole motor rotary drive system including a housing, a rotor rotatably and coaxially disposed within the housing, and an annular space between the rotor and housing. The rotor includes first and second ends, a bore extending between the first and second ends, an inlet port extending from the bore to the annular space, and an outlet port extending from the annular space to the bore. A plurality of gates are disposed within the annular space, each configured to engage the rotor and the housing, and a plurality of lobes extend within the annular space such that the lobes and the gates divide the annular space into a plurality of chambers. A flow path is defined by the annular space between the inlet and outlet ports, and the rotor is configured to rotate relative to the housing when a fluid is circulated along the flow path. | 03-12-2015 |
| 20150083500 | Mud motor assembly - A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe which provides high pressure mud to the mud motor, wherein the drive shaft receives at least a first portion of its rotational torque from any high pressure mud flowing through a first hydraulic chamber within the apparatus, and receives at least a second portion of its rotational torque from any high pressure mud flowing through a second hydraulic chamber within the apparatus. The mud motor apparatus possesses two hydraulic chambers, each having its own power stroke, and return stroke, and acting together in a controlled fashion, provide continuous power to a rotary drill bit. | 03-26-2015 |
| 20150114721 | Downhole Motor with Concentric Rotary Drive System - A rotary fluid drive has first and second bodies | 04-30-2015 |
| 20150114722 | DOWNHOLE SCREW MOTOR - To obtain technical result—creation of a new downhole screw motor ensuring a higher efficiency and increasing performance coefficient of a motor and motor operational life, improving of drilling efficiency—in a downhole screw motor comprising a stator having an internal screw surface, a rotor placed inside a stator having external screw surface, a sealing system, a spindle assembly, as per the invention as a sealing system the following system is used: a system, which contains a contact elastic, multilayered sealing agent, moreover a tough straps making layers in a sealing agent, have close ring-like shapes and are similar to the surface, to which they are fixed; the quantity of layers of a sealing agent is not more than six; in the layers separately gas and/or liquid is used as sealing media; a sealing system contains a separation joint of drilling mud flow, an electrogenerating turbine, a pumping unit for drill mud, regulating units of movement direction of sealing media and drill mud, a mud hopper, automatic control system and also, in accordance with applied sealing media, a tank-stabilizer with gas, a compressor, a heat exchanger for gas cooling and/or a tank-stabilizer with liquid, a pump, a heat exchanger for liquid cooling. | 04-30-2015 |
| 20150129314 | Downhole Motor - A downhole motor having a motor section, a drive shaft section, and an output shaft section. The output shaft section has a rotatable output shaft with a first end and a second end. A first thrust bearing assembly proximal to the first end of the output shaft, a second thrust bearing assembly proximal to second end to said output shaft. A radial bearing assembly disposed between the first and second thrust bearing assemblies. | 05-14-2015 |
| 20150354280 | Progressive Cavity Based Control System - A technique facilitates control over the actuation of a device by utilizing a rotor and a corresponding stator system. The technique employs a rotor and a corresponding stator component in a progressive cavity type system. The rotor and corresponding stator component are mounted such that rotational and/or axial motion may be imparted to at least one of the rotor or stator components relative to the other component. The controlled rotation may be utilized in providing controlled motion of an actuated device via the power of fluid moving through the progressive cavity type system. | 12-10-2015 |
| 20160040480 | Variable Diameter Stator and Rotor for Progressing Cavity Motor - A mud motor for use in a wellbore may include a stator and rotor. The tolerance between the stator and rotor may be varied along the length of the mud motor to, for example, reduce wear of the stator at predetermined locations. The tolerance may range from an interference fit to a clearance fit. The tolerance may vary multiple times across the length of the mud motor. | 02-11-2016 |
| 20160047169 | DOWNHOLE MOTOR - A downhole mud motor is formed of plural housings containing at least a drive section and a transmission section. At least a housing of the plural housings has a longitudinal axis and incorporates a reaming section with one or more rotary reamers. Each of the one or more rotary reamers is mounted in a respective pocket for rotation about a transverse axis relative to the longitudinal axis of the housing. | 02-18-2016 |
| 20160108675 | BEARING ASSEMBLY FOR A DRILLING TOOL - A bearing assembly for a drilling tool. A thrust bearing assembly for use in a drilling tool may include a first thrust frame having a generally cylindrical hollow body with a first inner surface, where the first thrust frame includes: (i) first flow diverters protruding laterally from the first inner surface toward a longitudinal axis of the thrust bearing assembly and (ii) first flow ports formed along the first inner surface between adjacent first flow diverters. The thrust bearing assembly may also include a stationary thrust bearing having a generally cylindrical base with legs extending in an axial direction from the base, where the legs may be generally positioned within the first flow ports. | 04-21-2016 |
| 20160138341 | MUD MOTOR WITH INTEGRATED REAMER - A mud motor has integrated rotatable reamer elements. The reamer elements may be located directly radially outwardly of a rotor of the mud motor on an outer surface of the mud motor. The reamer elements may be applied to provide one or more of sizing a wellbore, smoothing a wellbore and stabilizing a bottom hole assembly and/or drill bit during drilling. The reamer elements may project from pockets formed in an outside surface of the mud motor. Axes of rotation of the reamer elements may be parallel to and/or skewed relative to a longitudinal centerline of the mud motor. Reamer devices that connect at couplings between drill string sections may be used together with the mud motor or applied separately of the mud motor. The reamer devices include inwardly-projecting elements that engage gaps between the drill string sections. | 05-19-2016 |
| 20160160565 | DOWNHOLE MUD MOTOR - A disclosed mud motor includes a rotor head, a motor block, a hollow rotor, an inlet shaft, and an outlet shaft. In the operation of one embodiment, a pressurized drilling mud enters the rotor head through the inlet shaft. Some or all of the drilling mud is directed through an included inlet passage onto pistons which are included in the motor block and disposed concentrically around the outlet shaft. A downward action of the pistons resulting from the drilling mud causes an included power plate to rotate. Rotation of the power plate causes the hollow rotor and the rotor head to also rotate. The hollow rotor may be attached to a drilling implement. Rotation of the power plate also causes some or all of the drilling mud directed onto the pistons to be discharged into the outlet shaft through an included discharge passage. During the operation of one embodiment of the mud motor, the pistons do not rotate around the outlet shaft, but instead remain substantially in their original concentric alignment. | 06-09-2016 |
| 20160168912 | OSCILLATING MUD MOTOR | 06-16-2016 |
| 20160194916 | DOWNHOLE DRILLING MOTOR | 07-07-2016 |
