Natural Vibration Characteristic Of An Element Of Boring Means Related (1) To Natural Vibration Characteristic Of Another Element, Or (2) To Frequency Of An Imposed Motion Patents (Class 175/56)
  • Patent number: 9689234
    Abstract: A propulsion generator which employs one or more unbalanced rotors, such as fly wheels or other unbalance rotating members, which can be connected at a lower portion of a downhole coiled tubing string or other downhole tubular string for inducing propulsion of the coiled tubing. The unbalanced rotors may be oriented at different positions with respect to each other. The instantaneous fluid flow through the propulsion generator is substantially equivalent to the average fluid flow rate through the tool to provide relatively consistent fluid flow to downhole motors below the propulsion generator for operating the drill bit and/or cutters.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 27, 2017
    Assignee: Coil Solutions, Inc.
    Inventors: Marvin A. Gregory, Robert J. Kletzel
  • Patent number: 9598906
    Abstract: An apparatus for use in a horizontal section of a drill string is disclosed. The apparatus includes a motor that is connected to the horizontal section of the drill string. The motor is adapted to impart vibrations in the horizontal section of the drill string, where the vibrations are at about the lateral resonant frequency of the horizontal section of the drill string.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: March 21, 2017
    Assignee: SCIENTIFIC DRILLING INTERNATIONAL, INC.
    Inventor: Gerald Heisig
  • Patent number: 9316072
    Abstract: A valve for communication of a measurement while drilling system includes a first structure having a central portion and one or more elongate portions radially extending from the central portion, and a second structure having one or more portions which substantially bound a central orifice region and one or more elongate orifice regions radially extending from the central orifice region. At least one of the first structure and the second structure is configured to be rotated about a rotation axis to produce a relative rotation between the first structure and the second structure such that a flow path through which mud can flow varies as the at least one of the first structure and the second structure rotates about the rotation axis. The central portion has a maximum inscribed circle encircling the rotation axis and having a first radius and the central orifice region has a maximum inscribed circle encircling the rotation axis and having a second radius greater than the first radius.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 19, 2016
    Assignee: Gyrodata, Incorporated
    Inventors: John Preston Rogers, Stephen D. Bonner, Robert Rudolph Kirby, Eugene Linyaev
  • Patent number: 9217323
    Abstract: A logging while drilling (LWD) caliper includes a drill collar, at least one movable pad, a hinge coupler, a power transmitter and a power receiver. The hinge coupler couples the movable pad to the drill collar in such a way that the movable pad can move between an open position and a closed position. The power transmitter is coupled to the drill collar in such a way that the power transmitter receives power from the drill collar. The power receiver is coupled to the movable pad in such a way that the power receiver provides power to the movable pad. Also, the power transmitter is coupled to the drill collar and the power receiver is coupled to the movable pad is such a way that power is transmitted from the power transmitter to the power receiver.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 22, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: Brian Oliver Clark
  • Patent number: 9194208
    Abstract: The present disclosure is for a vibratory downhole rotary apparatus. The apparatus includes a cylindrical hollow body, a stator disposed within the cylindrical hollow body and a rotor disposed within the stator. The apparatus also includes a flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 24, 2015
    Assignee: thru Tubing Solutions, Inc.
    Inventors: Roger Schultz, Brock Watson
  • Patent number: 9175535
    Abstract: A propulsion generator which employs one or more unbalanced rotors, such as fly wheels or other unbalance rotating members, which can be connected at a lower portion of a downhole coiled tubing string or other downhole tubular string for inducing propulsion of the coiled tubing. The unbalanced rotors may be oriented at different positions with respect to each other. The instantaneous fluid flow through the propulsion generator is substantially equivalent to the average fluid flow rate through the tool to provide relatively consistent fluid flow to downhole motors below the propulsion generator for operating the drill bit and/or cutters.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 3, 2015
    Assignee: Coil Solutions, Inc.
    Inventors: Marvin A. Gregory, Robert J. Kletzel
  • Patent number: 9121225
    Abstract: A vibration system for drill bit housing and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore through which drilling fluid is pumped. In one embodiment, a drill bit housing contains a symmetrical rotatable member positioned to rotate in response to drilling fluid pumped through the housing, whereby a mechanical interconnection connected to the rotatable member produces vibrations within the drill bit housing for advancing bottom hole assemblies.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: September 1, 2015
    Assignee: CNPC USA Corp.
    Inventor: Marvin A Gregory
  • Patent number: 9106159
    Abstract: A system to harvest mechanical energy in a wellbore, wherein the mechanical energy comes from motion. The system uses mechanical energy coming from at least one of: motion of a drill bit, motion of a drill string, motion of flowing air or drilling mud down the drill string to the drill bit and up an annulus between the drill string and the wellbore, and motion of a bottom hole assembly connected to the drill string. The system can include a plurality of piezoelectric stand bundles, wherein each individual piezoelectric strand can vibrate as the pressure housing moves in the wellbore, thereby producing electricity.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: August 11, 2015
    Assignee: FOCUS TOOLS COLORADO, LLC
    Inventors: Darcy L. Wiebe, Rene M. Rey
  • Patent number: 9057258
    Abstract: A system for producing controlled vibrations within a borehole comprises a vibration mechanism an impact to produce a plurality of vibration beats. The vibration mechanism is located substantially near a bottom hole assembly within the borehole. A damping mechanism selectively damps the vibration beats to encode information therein. The damping mechanism is located remotely from the vibration mechanism along a drill string of the bottom hole assembly.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: June 16, 2015
    Assignee: Hunt Advanced Drilling Technologies, LLC
    Inventor: Todd W. Benson
  • Patent number: 9057248
    Abstract: A system for evaluating a geological formation in a bottom hole assembly (BHA) includes a vibration mechanism configured to use mechanical energy provided by a mechanical energy source to produce a plurality of vibration beats at a predetermined frequency at the BHA. At least one vibration sensor detects the plurality of vibration beats generated by the vibration mechanism. A controller generates a waveform responsive to the detected plurality of vibration beats. The waveform is generated in a first configuration when the geological formation has a first geological characteristic and the waveform is generated in a second configuration when the geological formation has a second geological characteristic.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: June 16, 2015
    Assignee: Hunt Advanced Drilling Technologies, LLC
    Inventor: Todd W. Benson
  • Patent number: 9022145
    Abstract: In some example embodiments, a system includes a drill string having a drill bit. The drill string extends through at least part of a well bore. The system also includes a first vibrational sensor, positioned on the drill bit to measure, at a first location on the drill string, an amplitude of one or more of an axial vibration and a lateral vibration. The system also includes a second vibrational sensor, positioned above the drill bit and on the drill string. The second vibration sensor is to measure, at a second location on the drill string, one or more of an axial vibration and a lateral vibration. The system includes a processor unit to determine a type of vibration based on a comparison of the amplitude at the first location to the amplitude at the second location, wherein the type of vibration is at least one of bit whirl of the drill bit and a while of a bottom hole assembly that is part of the drill string.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: May 5, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul F. Rodney, Chenkang David Chen, Carl A. Robbins
  • Publication number: 20150114716
    Abstract: Various implementations described herein are directed to a vibration tool, e.g., for use in drilling or other downhole operations. In one implementation, the vibration tool may include a housing having a bore extending therethrough. The vibration tool may also include a piston subassembly positioned inside the bore, where the piston subassembly is configured to oscillate when fluid flow inside the piston subassembly exceeds a predetermined flow rate. The vibration tool may further include a valve mechanism positioned around the piston subassembly, where the valve mechanism is configured to restrict fluid to flow inside the piston subassembly when the valve mechanism is in a closed state and configured to allow the fluid to flow from the piston subassembly to the bore when the valve mechanism is in an open state.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 30, 2015
    Inventors: Baozhong Yang, Tommy G. Ray, Jianbing Hu, Zhenbi Su, Dwayne P. Terracina, Xin Hu
  • Patent number: 9004194
    Abstract: A method of translating a member through a bore involving moving fluid through a tubular member such as a drill string, and generating impulses on the member by varying the passage of fluid through the member using a valve which opens at a first rate and closes at a different second rate to urge the member to advance in a selected direction. The valve may close quickly and open slowly, or may close slowly and open quickly.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 14, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventors: Alan Martyn Eddison, David Anderson Coull, Derek James Stuart
  • Patent number: 8997855
    Abstract: An apparatus includes a body shaped to deform a wellbore tool in a predetermined manner. A vibration device applies a vibration to the body to reduce a frictional force caused when the body deforms the wellbore tool. In one arrangement, the vibration devices imparts a resonant wave motion to a swaging apparatus that is being pushed through a passage of a wellbore tubular. A swaging body vibrates at a resonant frequency along the long axis of the wellbore tubular and/or normal to long axis of the wellbore tubular. The relative motion between the swaging body and the tubular member reduces the force required to expand the wellbore tubular. Optionally, a controller operatively connected to the vibration device adjusts the operation of the vibration device in response to the sensor measurements of the vibrations in the swage body.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: April 7, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Edward J. O'Malley, Steven N. Bailey
  • Publication number: 20150075867
    Abstract: A pulse generator comprises a stator coupled to a housing and a rotor that is rotatably disposed within the housing. An annulus is formed between the rotor and the stator. An inner bore is formed through the rotor. One or more outer flow ports provide fluid communication between the annulus and the inner bore. A retrievable valve assembly is rotationally coupled to the rotor and at least partially disposed within the inner bore. The retrievable valve assembly includes a rotary valve member having one or more primary flow ports. A fluid flow path is periodically formed by the one or more outer flow ports, the annulus, and the one or more primary flow ports as the rotor rotates.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Applicant: National Oilwell Varco, L.P.
    Inventors: Alan Martyn EDDISON, Alan Kitching, Derek Stuart
  • Publication number: 20150034387
    Abstract: A shock assembly for use with a motion tool deployable into a wellbore by a conveyance. The motion tool includes a mandrel operatively connectable to the conveyance or the motion tool, a housing operatively connectable to the motion tool or the conveyance (the housing having an opening to slidingly receive the mandrel and including a first and a second spring portion), a first spring slidably positionable in the first spring portion and having a first spring stiffness, and a second spring slidably positionable in the second spring portion having a second spring stiffness. The second spring stiffness being less than the first spring stiffness such that the first and second springs selectively engage as the housing slidingly moves about the mandrel in response to forces applied to the system to selectively restrict movement between the mandrel and the housing whereby the motion tool is vibrated.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: NATIONAL OILWELL DHT, L.P.
    Inventors: Andrew D. MALCOLM, Roman KVASNYTSIA, Justin LOCKHART
  • Patent number: 8925649
    Abstract: A system to harvest mechanical energy in a wellbore, wherein the mechanical energy comes from motion. The system uses mechanical energy coming from at least one of: motion of a drill bit, motion of a drill string, motion of flowing air or drilling mud down the drill string to the drill bit and up an annulus between the drill string and the wellbore, motion of a bottom hole assembly connected to the drill string. The system can include a plurality of piezoelectric stand bundles, wherein each individual piezoelectric strand can vibrate as the pressure housing moves in the wellbore, thereby producing electricity.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: January 6, 2015
    Assignee: Focus Tools Colorado, LLC
    Inventors: Darcy L. Wiebe, Rene M. Rey
  • Patent number: 8925648
    Abstract: A system and method for controlling an oscillatory penetration apparatus. An embodiment is a system and method for controlling a sonic drill having a displacement and an operating range and operating at a phase difference, said sonic drill comprising a push-pull piston and eccentrics, said method comprising: operating the push-pull piston at an initial push-pull force while the eccentrics are operated at a plurality of different operating frequencies within the operating range of the sonic drill and measuring the displacement at each operating frequency; determining an efficient operating frequency for the material being drilled and operating the eccentrics at said efficient operating frequency; determining the phase difference at which the sonic drill is operating; and if the phase difference is not substantially equal to minus ninety degrees, operating the push-pull piston at another push-pull force.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: January 6, 2015
    Inventor: Peter A. Lucon
  • Publication number: 20140374162
    Abstract: A sonic drill head comprising an outer housing, an isolation system, a sine generator and a spindle. The sine generator generates a linear sinusoidal vibration force through the rotation of a plurality of eccentric masses. The sine generator is configured to translate the linear sinusoidal force to the spindle in a direction corresponding to the spindle's axis of rotation. The sine generator supports the spindle within the housing such that the spindle is free to rotate about the spindle axis. The spindle is generally a hollow tube section thereby allowing the passage of drilling fluid, mud, cuttings, and/or tooling. The isolation system generally reduces the transfer of the vibration force generated by the sine generator to the outer housing, yet is able to transfer an applied thrust force from the outer housing to the sine generator.
    Type: Application
    Filed: September 9, 2014
    Publication date: December 25, 2014
    Inventors: Brian Smith, Krasimir Zahariev
  • Publication number: 20140360782
    Abstract: A system is provided for communicating within a borehole using controlled vibrations. A movement mechanism uses mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats. The vibration beats will occur whenever the mechanical energy is provided by the mechanical energy source at one of at least three impact levels. A vibration control mechanism selectively controls an amplitude of the plurality of vibration beats to encode information therein. The amplitude of a vibration beat is selectively controlled by regulating the impact of the first surface and the second surface to one of the at least three impact levels.
    Type: Application
    Filed: August 25, 2014
    Publication date: December 11, 2014
    Inventor: TODD W. BENSON
  • Publication number: 20140353035
    Abstract: A downhole drilling apparatus includes a drill bit, a steering tool, and an anti-oscillation sleeve deployed about a downhole end of the steering tool. The anti-oscillation sleeve is undergauge and is deployed axially between a first touch point at which the drill bit contacts the borehole wall and a second touch point at which the steering tool contacts the borehole wall.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: Junichi Sugiura, Geoffrey C. Downton
  • Publication number: 20140305706
    Abstract: A drilling tool for laying a tube (3) around a buried elongated element (1), comprising a drilling head (2) guided by the buried element (1), moving under the action of a pressurized fluid, from a first free end (14) of the buried element towards a second end (13) of the buried element (1), and pulling the tube (3), characterized in that the drilling tool comprises pressurization means (4) attached to the first end (14) of the buried element (1), able to slide into the tube (3) pulled by the drilling head (2) and able to create a pushing force on the drilling head (2) by the pressurization with said pressurized fluid of a pressure chamber (42) arranged between the drilling head (2) and the pressurization means (4).
    Type: Application
    Filed: July 30, 2012
    Publication date: October 16, 2014
    Applicants: EHTP ENTREPRISE HYDRAULIQUE ET TRAVAUX PUBLICS, PLUMETTAZ HOLDING SA
    Inventor: Andrzej Wacinski
  • Patent number: 8851203
    Abstract: A sonic drill head comprising an outer housing, an isolation system, a sine generator and a spindle. The sine generator generates a linear sinusoidal vibration force through the rotation of a plurality of eccentric masses. The sine generator is configured to translate the linear sinusoidal force to the spindle in a direction corresponding to the spindle's axis of rotation. The sine generator supports the spindle within the housing such that the spindle is free to rotate about the spindle axis. The spindle is generally a hollow tube section thereby allowing the passage of drilling fluid, mud, cuttings, and/or tooling. The isolation system generally reduces the transfer of the vibration force generated by the sine generator to the outer housing, yet is able to transfer an applied thrust force from the outer housing to the sine generator.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 7, 2014
    Assignee: Layne Christensen Company
    Inventors: Brian Smith, Krasimir Zahariev, Kyle Jones
  • Patent number: 8844649
    Abstract: A system and method are provided for using controlled vibrations to bias a drilling direction of a bottom hole assembly (BHA) in a borehole. In one example, the system includes a movement mechanism and a vibration control mechanism. The movement mechanism is configured to use mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats. The vibration control mechanism is configured to influence a drilling direction in which the BHA is drilling by controlling an amplitude of the vibration beats to regulate an impact force between the first surface and the second surface, where the amplitude is controlled based on directional information corresponding to the BHA.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: September 30, 2014
    Assignee: Hunt Advanced Drilling Technologies, L.L.C.
    Inventor: Todd W. Benson
  • Publication number: 20140246234
    Abstract: A drilling apparatus including a drill bit and a nutation device. The drilling apparatus is configured to enable the drill bit to be rotated at a rotation frequency while the nutation device simultaneously nutates the drill bit at a nutation frequency. The nutation device may include a vibrating device for imposing vibrations upon the drilling apparatus at a vibration frequency, thereby causing nutation of the drill bit at the nutation frequency. The drilling apparatus may include a tuning mechanism for tuning the vibration frequency of the vibrating device. A method including rotating a drill bit at a rotation frequency and simultaneously nutating the drill bit at a nutation frequency.
    Type: Application
    Filed: March 1, 2014
    Publication date: September 4, 2014
    Applicant: DRILFORMANCE TECHNOLOGIES, LLC
    Inventors: Sean Gillis, Matt Mangan
  • Patent number: 8798978
    Abstract: Method to estimate severity of downhole vibration for a wellbore drill tool assembly, comprising: identifying a dataset comprising selected drill tool assembly parameters; selecting a reference downhole vibration index for the drill tool assembly; identifying a surface parameter and calculating a reference surface vibration attribute for the selected reference downhole vibration index; determining a surface vibration attribute derived from at least one surface measurement or observation obtained in a drilling operation, the determined surface vibration attribute corresponding to the identified surface parameter; and estimating a downhole vibration index by evaluating the determined surface vibration attribute with respect to the identified reference surface vibration attribute.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: August 5, 2014
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Mehmet Deniz Ertas, Jeffrey R. Bailey, Damian N. Burch, Lei Wang, Paul E. Pastusek, Shankar Sundararaman
  • Publication number: 20140196952
    Abstract: A device in place as, or suitable for use as, a vibrational tool of or in a downhole assembly, the device having a first magnetic assembly which is to be, or can be, rotated relative to a second magnetic assembly and which, when so rotated, causes the second magnetic assembly to oscillate and/or reciprocate at least substantially in an axial manner; wherein the oscillating and/or reciprocating magnetic assembly, at least substantially, at either one end, or both ends, is attached to and constrained in its oscillations and/or reciprocation by a compliant member thereby allowing the output force to be distributed to the outer body of the vibrational tool and/or any attached uphole and/or downhole tooling, from the compression and extension of the compliant member in a substantially sinusoidal manner.
    Type: Application
    Filed: May 23, 2012
    Publication date: July 17, 2014
    Applicant: FLEXIDRILL LIMITED
    Inventors: Owen Schicker, Enda Hand
  • Publication number: 20140158428
    Abstract: A method includes oscillating, with a first acceleration profile, at least a portion of a drill string using a top drive at least indirectly coupled to the drill string and includes oscillating, with a second acceleration profile different from the first acceleration profile, at least a portion of the drill string using the top drive. The method also includes oscillating, with a third acceleration profile, at least a portion of the drill string using the top drive, wherein the third acceleration profile is optimized based on feedback associated with the oscillation with the first acceleration profile and feedback associated with the oscillation with the second acceleration profile.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: Canrig Drilling Technology Ltd.
    Inventors: Scott G. Boone, Colin Gillan
  • Publication number: 20140151125
    Abstract: A vibration system for drill bit housing and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore through which drilling fluid is pumped. In one embodiment, a drill bit housing contains a symmetrical rotatable member positioned to rotate in response to drilling fluid pumped through the housing, whereby a mechanical interconnection connected to the rotatable member produces vibrations within the drill bit housing for advancing bottom hole assemblies.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Applicant: CNPC USA CORPORATION
    Inventor: Marvin A. Gregory
  • Publication number: 20140151122
    Abstract: An apparatus for reducing vibration includes: a damping assembly configured to be fixedly attached to a downhole component, the downhole component configured to rotate within a borehole in an earth formation, the damping assembly having a damping frequency that is tuned relative to a selected natural vibration frequency of the rotating downhole component to reduce vibration due to component rotation.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Inventors: Suresh Venugopal, Jayesh R. Jain, Hanno Reckmann, Bernhard Meyer-Heye
  • Patent number: 8720604
    Abstract: A drill bit direction system and method is disclosed that modifies or biases the stochastic movement of the drill bit to change a drilling direction of a drilling system. The direction of the drill bit is monitored to determine if the direction happens to align in some way with a preferred direction. If the direction isn't close enough to a preferred or desired direction, stochastic motion of the drill bit in the borehole may be controlled and/or motion of the drill bit under a side force acting on the drill bit to direct the drilling may be focused or biased to modify the direction of drilling closer to the preferred direction. Any of a number of stochastic motion control mechanisms or biasing mechanisms can be used. Some embodiments can resort to conventional steering mechanisms to supplement the stochastic motion control or side force biasing mechanisms.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 13, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Michael Charles Sheppard, Ashley Bernard Johnson, Geoff Downton
  • Patent number: 8688382
    Abstract: Disclosed is a method for estimating downhole lateral vibrations a drill tubular disposed in a borehole penetrating the earth or a component coupled to the drill tubular. The method includes rotating the drill tubular to drill the first borehole and performing a plurality of measurements in a time window of one or more parameters of the drill tubular at or above a surface of the earth during the rotating using a sensor. The method further includes estimating the downhole lateral vibrations using a processor that receives the plurality of measurements.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: April 1, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Reed W. Spencer
  • Publication number: 20140083775
    Abstract: A rotary drill and a double-layer drilling rod mechanism are disclosed. The rotary drill comprises a vibration excitation mechanism (1), a rotating mechanism (3) and a flushing mechanism (10). The rotating mechanism (3) consists of a rotary box (8), a driving gear (7), a rotary gear (6) and a rotary connecting sleeve (9). The rotary gear (6) is tightly cased on the rotary connecting sleeve (9) and engaged with the driving gear (7). A connecting rod (2) is provided in the rotary connecting sleeve (9), and the rotary connecting sleeve (9) is connected with the double-layer drilling rod mechanism (11). An impact drilling string (25) located by a guide bearing bush (26) is arranged in the outer rotary drilling pipe (28) of the double-layer drilling rod mechanism (11); a latch (24) for connecting the connecting rod (2) is arranged at the top of the inner impact drilling string (25); and an impact head (12) connected with the impact drilling string (25) is arranged in the drilling bit connecting sleeve (29).
    Type: Application
    Filed: July 29, 2011
    Publication date: March 27, 2014
    Inventor: Zhongsheng Tang
  • Patent number: 8678107
    Abstract: A system and method are provided for producing controlled vibrations within a borehole. In one example, the system includes an encoder plate having a first surface, an anvil plate having a second surface, a movement mechanism configured to enable translational movement of the encoder plate relative to the anvil plate to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats, and a vibration control mechanism configured to selectively control an amplitude of the vibration beats to encode information therein.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 25, 2014
    Assignee: Hunt Advanced Drilling Technologies, L.L.C.
    Inventor: Todd W. Benson
  • Publication number: 20130292179
    Abstract: The invention relates to a drive device for driving a drill rod, which has an outer rod and an inner rod, with a first rotary drive unit, with which the outer rod can be driven in a rotating manner via an outer drive shaft, a second rotary drive unit, with which the inner rod can be driven in a rotating manner independently of the outer rod via an inner drive shaft, and a vibration unit for generating a vibration, which has a vibration element that can be driven in a vibrating manner. For transmission of the vibration to the outer drive shaft the vibration element is connected via a first transmission unit to the outer drive shaft and for transmission of the vibration to the inner drive shaft the vibration element is connected via a second transmission unit to the inner drive shaft.
    Type: Application
    Filed: November 2, 2012
    Publication date: November 7, 2013
    Inventor: Andreas PIKOWSKI
  • Patent number: 8550183
    Abstract: A drilling method comprises controlling operation of a drill string to maintain at least a portion of the drill string in forward whirl.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: October 8, 2013
    Assignee: National Oilwell Varco, L.P.
    Inventors: Ian Forster, Alan Eddison, Alastair MacFarlane
  • Patent number: 8528664
    Abstract: A tubular downhole tool string component having a sidewall with a fluid passageway formed therein between a first end and second end, and a valve mechanism disposed within the fluid passageway adapted to substantially cyclically build-up and release pressure within the fluid passageway such that a pressure build-up results in radial expansion of at least a portion of the sidewall and wherein a pressure release results in a radial contraction of the portion of the sidewall. The valve mechanism disposed within the fluid passageway comprises a spring. Radial expansion and contraction of the portion of the sidewall varies a weight loaded to a drill bit disposed at a drilling end of the drill string.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, John Bailey
  • Publication number: 20130199848
    Abstract: A pressure pulse generating method and apparatus for use with a drill string includes a top and bottom subs for attaching the apparatus within the drill string; a rotor/stator; a drive assembly; and a nozzle sub which includes a nozzle assembly comprising a nozzle holder and a replaceable nozzle; and a nozzle housing having pulse openings. The nozzle holder has fluid ports which periodically align with the pulse openings as the nozzle holder rotates within the nozzle housing to achieve a desired pulse amplitude, frequency and waveform.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 8, 2013
    Applicant: COUGAR DRILLING SOLUTIONS INC.
    Inventor: TOM GUST
  • Publication number: 20130186686
    Abstract: An apparatus for use in a horizontal section of a drill string is disclosed. The apparatus includes a motor that is connected to the horizontal section of the drill string. The motor is adapted to impart vibrations in the horizontal section of the drill string, where the vibrations are at about the lateral resonant frequency of the horizontal section of the drill string.
    Type: Application
    Filed: July 23, 2012
    Publication date: July 25, 2013
    Applicant: SCIENTIFIC DRILLING INTERNATIONAL, INC.
    Inventor: Gerald Heisig
  • Patent number: 8453761
    Abstract: The present invention relates to drilling apparatus comprising a drill-bit (1) capable of rotary and high frequency oscillatory loading; and control means for controlling applied rotational and/or oscillatory loading of the drill-bit, the control means having adjustment means for varying the applied rotational and/or oscillatory loading, said adjustment means being responsive to conditions of the material through which the drill is passing. The control means is in use provided on the apparatus in a downhole location and includes sensors for taking downhole measurements of material characteristics, whereby the apparatus is operable downhole under closed loop real-time control. The apparatus can determine appropriate loading parameters for the drill-bit in order to achieve and maintain resonance between the drill-bit and the drilled material in contact therewith.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: June 4, 2013
    Assignee: University Court of the University of Aberdeen
    Inventor: Marian Wiercigroch
  • Publication number: 20130092441
    Abstract: A method, apparatus and computer-readable medium for reducing a vibration of a drill string in a borehole. A sensor of the drill string obtains one or more measurements of a parameter of the vibration. A processor determines at least one force for controlling the measured vibration from the measured parameter. At least one actuator applies the determined at least one force against the borehole wall to control the vibration of the drill string.
    Type: Application
    Filed: February 6, 2012
    Publication date: April 18, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Olof Hummes, Matthias Meister, Sven Krueger, Bernd Santelmann, Michael Koppe
  • Patent number: 8365840
    Abstract: The present invention relates to a method and a device for controlling at least one drill parameter when drilling in rock with a drilling machine. During drilling, an impulse-generating device uses an impact means to induce shock waves in a tool working against the rock, a pressure level for a shock-wave-generating pressure is controlled during the drilling, and said drilling machine includes a damping chamber that can be pressurized. The contact of the drilling machine against the rock is affected at least partially by the pressure prevailing in said damping chamber. When the pressure in said damping chamber exceeds said first level and is below said second level, the percussion pressure is controlled as a function of the pressure in said damping chamber.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: February 5, 2013
    Assignee: Atlas Copco Rock Drills AB
    Inventors: Jonas Sinnerstad, Magnus Olsson, Marcus LeĆ¼
  • Patent number: 8353368
    Abstract: The present invention relates to drilling apparatus comprising a drill-bit (1) capable of rotary and high frequency oscillatory loading; and control means for controlling applied rotational and/or oscillatory loading of the drill-bit, the control means having adjustment means for varying the applied rotational and/or oscillatory loading, said adjustment means being responsive to conditions of the material through which the drill is passing. The control means is in use provided on the apparatus in a downhole location and includes sensors for taking downhole measurements of material characteristics, whereby the apparatus is operable downhole under closed loop real-time control. The apparatus can determine appropriate loading parameters for the drill-bit in order to achieve and maintain resonance between the drill-bit and the drilled material in contact therewith.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: January 15, 2013
    Assignee: University Court of the University of Aberdeen
    Inventor: Marian Wiercigroch
  • Patent number: 8342263
    Abstract: A mobile drill rig has a drill mast, a carriage mounted to the drill mast for vertical movement, and a vibratory drill head having a sine generator and a rotation mechanism for imparting vibration and rotation to a drill rod string. An elastomeric torsion coupler couples the rotation mechanism to the sine generator to transmit rotational force to the drill rod string while isolating vibrations of the sine generator from the rotation mechanism. Another coupler connects the drill head to the carriage in a manner that allows floating vertical movement of the drill head relative to the carriage while isolating vibrations of the sine generator from the carriage. Elastomeric bumpers limit the vertical movement of the drill head relative to the carriage. Elastomeric spacers located between the rotation mechanism and the sine generator handle the vertical loading and maintain the proper spacing between the sine generator and the rotation mechanism.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: January 1, 2013
    Assignee: Kejr, Inc.
    Inventors: Brent Kejr, Ryan Kejr
  • Patent number: 8336643
    Abstract: A vibratory unit interposed between a planetary drive and earth-penetrating device, e.g., an auger, is powered by the hydraulic system of a tractor, skid loader or the like. The unit includes a housing having a base plate with a slidable striker plate mounted therein. A Kelly bar displaces the planetary drive from the auger and through the housing. A rotatable shaft with weights eccentrically mounted thereon produces vibratory forces and urges the striker plate into contact with the base plate to provide hammer-like forces on the auger.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: December 25, 2012
    Inventor: Ronald Harleman
  • Publication number: 20120255782
    Abstract: A sonic drill head comprising an outer housing, an isolation system, a sine generator and a spindle. The sine generator generates a linear sinusoidal vibration force through the rotation of a plurality of eccentric masses. The sine generator is configured to translate the linear sinusoidal force to the spindle in a direction corresponding to the spindle's axis of rotation. The sine generator supports the spindle within the housing such that the spindle is free to rotate about the spindle axis. The spindle is generally a hollow tube section thereby allowing the passage of drilling fluid, mud, cuttings, and/or tooling. The isolation system generally reduces the transfer of the vibration force generated by the sine generator to the outer housing, yet is able to transfer an applied thrust force from the outer housing to the sine generator.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Inventors: Brian SMITH, Krasimir Zahariev, Kyle Jones
  • Publication number: 20120247832
    Abstract: A downhole tool assembly has a component that is sensitive to shock and vibration. A reciprocating element is coupled to the component. The reciprocating element has an axial internal passage and an outer surface. A housing has an internal axial bore for receiving the reciprocating element for axial reciprocal motion therein. A retainer is mounted to the housing and seals the housing between the component and the reciprocating element. A first spring is located between the housing and the reciprocating element. A second spring is located between the reciprocating element and the retainer. A first reciprocating seal is located between the reciprocating element and the housing. A second reciprocating seal is located between the connector and the retainer. A fluid is contained by the reciprocating seals inside the housing. The reciprocating element permits a limited amount of fluid to flow between sides thereof.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Applicant: PHOENIX TECHNOLOGY SERVICES LP
    Inventors: David S. Cramer, David D. Devlin
  • Publication number: 20120241219
    Abstract: A method for controlling a resonance enhanced rotary drill comprising a rotary drill bit and an oscillator for applying axial oscillatory loading to the rotary drill bit, the method comprising: controlling frequency (f) of the oscillator in the resonance enhanced rotary drill whereby the frequency (f) is maintained in the range (D2 Us/(8000 ?Am))1/2?f?Sf(D2 Us/(8000 ?Am))1/2 where D is diameter of the rotary drill bit, Us is compressive strength of material being drilled, A is amplitude of vibration, m is vibrating mass, and Sf is a scaling factor greater than 1; and controlling dynamic force (Fd) of the oscillator in the resonance enhanced rotary drill whereby the dynamic force (Fd) is maintained in the range [(?/4)D2effUs]?Fd?SFd[(?/4)D2effUs] where Deff is an effective diameter of the rotary drill bit, Us is a compressive strength of material being drilled, and SFd is a scaling factor greater than 1, wherein the frequency (f) and the dynamic force (Fd) of the oscillator are controll
    Type: Application
    Filed: September 8, 2010
    Publication date: September 27, 2012
    Applicant: ITI SCOTLAND LIMITED
    Inventor: Marian Wiercigroch
  • Publication number: 20120228028
    Abstract: An apparatus and method for damping vibration, especially torsional vibration due to stick-slip, in a drill string, Sensors measure the instantaneous angular velocity of the drill string at one or more locations along the length of the drill string. One or more vibration damping modules are also spaced along the length of the drill string. When torsional vibration above a threshold is detected, the damping module imposes a reverse torque on the drill that dampens the torsional vibration. The reverse torque can be created by imparting a frictional resistance to the rotation of the drill string. The frictional resistance can be created externally, by extending friction pads from the damping module so that they contact the bore hole wall and drag along the bore hole as the drill string rotates, or internally by anchoring a housing mounted on the drill string to the wall of the bore hole and then imposing frictional resistance on a fluid, such as a magnetorheological fluid, flowing within the drill string.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 13, 2012
    Applicant: APS TECHNOLOGY, INC.
    Inventors: WILLIAM EVANS TURNER, MARK HUTCHINSON, DIRK BOSMAN, MARK ELLSWORTH WASSELL, CARL ALLISON PERRY, MARTIN E. COBERN
  • Patent number: 8262322
    Abstract: A pile adapted to be driven into the ground and having retaining formations to retain one or more geothermal conduit loops. Each conduit loop is formed by opposed longitudinal conduit sections interconnected at a lower end by an interconnecting section. The conduit loops are adapted for flow of a heat exchange fluid therein. The retaining formations retain the one or more conduit loops in close proximity to the pile through the attachment means as the pile is driven into the ground.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: September 11, 2012
    Inventor: Alain Desmeules