With Bit Guide Or Bore Wall Compacting Device Patents (Class 175/408)
  • Patent number: 9469015
    Abstract: A drill bit includes a bit body having an end face for engaging a rock formation. The end face is defined by a HIP pressed center structure formed of a metal matrix impregnated with super abrasive particles. The HIP pressed center structure includes a central region located at a center axis of said drill bit and finger regions extending radially from the central region. The end face is further defined by infiltrated ribs formed of a metal matrix impregnated with super abrasive particles. Certain ones of the infiltrated ribs are configured to form radial extensions from the finger regions of the HIP pressed center structure.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: October 18, 2016
    Assignee: VAREL INTERNATIONAL, IND., L.P.
    Inventors: Bruno Cuillier De Maindreville, Gilles Gallego
  • Patent number: 8991524
    Abstract: Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Longyear TM, Inc.
    Inventors: Cody A. Pearce, Christian M. Lambert, Michael D. Rupp
  • Patent number: 8905163
    Abstract: A rotary drill bit having blades with cutting elements disposed on exterior portions thereof may be formed with either a continuous cutting zone or a substantially continuous cutting zone between the last cutting element on each blade and an adjacent gage pad. Such rotary drill bits may have improved steerability during the formation of a directional wellbore and/or may experience substantially reduced wear on gage pads and/or portions of each blade adjacent to respective gage pads. For some rotary drill bits an additional cutter may be disposed in one or more gage pads adjacent to the last cutting element. For other rotary drill bits a gage cutter may be disposed between and in close proximity to both the last cutting element and adjacent portions of the associated gage pad.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: December 9, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shilin Chen, Riun Ashlie
  • Patent number: 8899355
    Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has been designed to increase the velocity across the cutting elements.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: December 2, 2014
    Assignee: Northbasin Energy Services Inc.
    Inventors: Geir Hareland, Jeff Janzen
  • Patent number: 8881848
    Abstract: A fixed cutter drill bit that includes one or more integrally-mounted rotating disc with cutters around the circumference of the disc. Each disc is mounted to bearings to handle the torque generated and the weight on bit required to cut the formation. The mounting angle of the disc generates a torque causing the disc to rotate. As the disc rotates, new cutters are presented to the formation. The discs may vary in size, mounting location and number so as to cover entire bladed or just a certain portions of blades. The exposure of the disc could also be set to enable it to rotate while under load, e.g., the cutters on the outside of the bit may contact the formation while the inner half of the disc is protected by a fixed blade.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: November 11, 2014
    Assignee: Ulterra Drilling Technologies, L.P.
    Inventors: Craig Knull, Kevin Christenson
  • Patent number: 8869919
    Abstract: A drill bit may have a bit body, a plurality of cutting blades extending radially from the bit body and having cutting elements disposed thereon, the plurality of cutting blades forming a cutting blade gage pad diameter configured to contact a formation, and a plurality of raised volumes of material extending from the bit body and devoid of cutting elements, the plurality of raised volumes of material forming a gage pad diameter configured to contact the formation, wherein the plurality of cutting blades and the plurality of raised volume of material are circumferentially spaced having fluid courses that extend therebetween.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: October 28, 2014
    Assignee: Smith International, Inc.
    Inventors: Yuelin Shen, Youhe Zhang, Bala Durairajan, Charles H. S. Douglas, III
  • Publication number: 20140305711
    Abstract: A downhole stabiliser (5), such as a drill motor stabiliser, comprises at least one reaming means and/or reinforcing means (10). The present invention also relates to an assembly (30), such as a downhole drilling assembly (31), comprising at least one such stabiliser (5) and/or a drill bit (40,41) comprising a gauge bit (42) at or near a drilling end (45) thereof, and a connection means (46) for connecting the drill bit (40,41) to a drill motor assembly (60), wherein the drill bit gauge (42) comprises a substantially cylindrical portion having a length less than or equal to approximately 1.0 times the nominal bit diameter. The present invention also relates to a novel locking mechanism (80), such as a lock and key mechanism, to allow locking of a shaft (70?), e.g. a motor drive shaft (71?), through or together with a stabiliser (5?).
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Andrew McPherson Downie, Pascal Michel Vitale, Bachar Boussi
  • Patent number: 8783386
    Abstract: A drill bit for drilling a borehole in an earthen formation. In an embodiment, the bit comprises a first blade having a cutter-supporting surface. In addition, the bit comprises a plurality of primary cutter elements with cutting faces mounted to the cutter-supporting surface. The cutting profiles of the cutting faces define an outermost cutting profile Po in rotated profile view. Further, the bit comprises a stabilizing member having an end distal the cutter-supporting surface. The end includes a tip. The tip is offset from the outermost cutting profile Po in rotated profile view.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: July 22, 2014
    Assignee: Smith International, Inc.
    Inventors: Bala Durairajan, Dwayne P Terracina
  • Patent number: 8757297
    Abstract: A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: June 24, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Enis Aliko, Thorsten Schwefe
  • Publication number: 20140027177
    Abstract: In one aspect, a drill bit is disclosed that in one embodiment includes a pad configured to extend and retract from a surface of the drill bit and a force application device configured to extend and retract the pad, wherein the force application device includes a force action member that includes a lever action device configured to extend and retract the pad from the drill bit surface. In another aspect, a method of drilling a wellbore is provided that in one embodiment includes: conveying a drill string having a drill bit at an end thereof, wherein the drill bit includes a pad configured to extend and retract from a surface of the drill bit and a force application device that includes a lever action device configured to extend and retract the pad from the surface of the drill bit; and rotating the drill bit to drill the wellbore.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 30, 2014
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Thorsten Schwefe, Dan Raz, Gregory Rinberg
  • Publication number: 20130292185
    Abstract: A fixed cutter drill bit that includes one or more integrally-mounted rotating disc with cutters around the circumference of the disc. Each disc is mounted to bearings to handle the torque generated and the weight on bit required to cut the formation. The mounting angle of the disc generates a torque causing the disc to rotate. As the disc rotates, new cutters are presented to the formation. The discs may vary in size, mounting location and number so as to cover entire bladed or just a certain portions of blades. The exposure of the disc could also be set to enable it to rotate while under load, e.g., the cutters on the outside of the bit may contact the formation while the inner half of the disc is protected by a fixed blade.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 7, 2013
    Inventor: CRAIG KNULL
  • Publication number: 20130292187
    Abstract: A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.
    Type: Application
    Filed: June 10, 2013
    Publication date: November 7, 2013
    Inventors: Enis Aliko, Thorsten Schwefe
  • Publication number: 20130292186
    Abstract: A downhole cutting tool may include a tool body, a plurality of blades extending azimuthally from the tool body comprising a cone region, a shoulder region, and a gage region, at least one cutting element disposed along the cone region and the shoulder region of the blade, and at least one gage cutting element disposed along the gage region of the blade wherein the at least one gage cutting element has a negative backrake ranging from greater than 70 to about 85 degrees.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 7, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: YOUHE ZHANG, MICHAEL G. AZAR, CHEN CHEN, YURI BURHAN
  • Patent number: 8531824
    Abstract: This disclosure relates generally to an apparatus and/or system for housing a device. The apparatus includes a housing that is configured such that a device may be fitted within the housing and thereby be protected, such as from shocks and/or liquid. The housing may include top and bottom members that may be removably coupled together so as to form the housing. Each top and bottom member optionally includes front and back surfaces surrounded by a perimeter. The perimeter is defined by proximal and distal ends as well as opposing sides. The top and bottom members may include respective clasping mechanisms that extend along the perimeter of the top and bottom members. The clasping mechanisms are configured for coupling the top and bottom members with one another thereby sealing the housing, for instance, in a shock-proof and/or water tight seal.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: September 10, 2013
    Assignee: TreeFrog Developments, Inc.
    Inventor: Gary Rayner
  • Publication number: 20130228382
    Abstract: A drill bit comprises a plurality of annular blades coupled to a bit body. A plurality of gauge pads is coupled to the bit body and defines an outer cutting diameter. A circumferentially continuous gauge ring is coupled to the bit body and defines an inner cutting diameter. An inner cutting structure is coupled to the bit body and has a cutting diameter substantially equal to the inner cutting diameter.
    Type: Application
    Filed: February 22, 2013
    Publication date: September 5, 2013
    Applicant: National Oilwell Varco, L.P.
    Inventor: Richard J. SAUVAGEAU
  • Patent number: 8499834
    Abstract: A milling tool which includes a nose cutting portion, a cutting section having a plurality of hardened cutters and a shaft portion. A wear pad is disposed on the cutting section and shaft portion. Upon the shaft portion, the wear pad extends radially outwardly to an engagement diameter that exceeds the maximum cutting diameter of the cutters.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 6, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Christopher W. Guidry, Guruswami Navin, Lambertus C. F. Joppe, Andrew D. Ponder, Calvin Stowe
  • Patent number: 8479846
    Abstract: Earth-boring tools comprise a face and a plurality of cutting elements disposed on at least a portion of the face. An impact material is positioned on at least one portion of a body and has a relative exposure equal to or greater than at least some of the cutting elements of the plurality of cutting elements. The impact material comprises a material having a lower abrasion resistance than the body. Methods of making and methods of using such earth-boring tools.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: July 9, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Trung Quoc Huynh, Calvin J. Stowe, Andrew D. Ponder, James S. Trahan
  • Patent number: 8459382
    Abstract: A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 11, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Enis Aliko, Thorsten Schwefe
  • Patent number: 8360174
    Abstract: A drilling assembly comprises a drill bit that includes a bit body intermediate a working face and a shank. An indenting member adapted to guide the drill bit protrudes from the working face. A flexible portion is disposed above the bit body.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: January 29, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Paula Turner, David Lundgreen, Scott Woolston
  • Patent number: 8356679
    Abstract: A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 22, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shilin Chen, Riun Ashlie
  • Patent number: 8327951
    Abstract: A drill bit is described herein, having a first bit face with a first plurality of cutters oriented to bore in a first direction, and a second bit face with a second plurality of cutters oriented to bore in one or more second directions. The pluralities of cutters enable functional articulation of the drill bit, such that the drill bit can change direction within a borehole without requiring removal of the drill bit. The drill bit can thereby drill in a downhole direction and lateral directions, can back ream through the borehole, and can provide the borehole with one or more oversized regions, as desired.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: December 11, 2012
    Assignee: Omni IP Ltd.
    Inventors: James Shamburger, David Wilde
  • Patent number: 8302703
    Abstract: A technique is used to control the direction of a drill bit or bottom hole assembly via hydraulic steering utilizing a plurality of steering pads. A portion of hydraulic fluid, e.g. drilling fluid, is directed under pressure to a pad interface region proximate each pad. The hydraulic fluid provides additional force against a surrounding wall and/or reduces or eliminates contact between the pads and the surrounding wall.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: November 6, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Radovan Rolovic
  • Patent number: 8296115
    Abstract: Methods and systems may be provided simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of bit walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: October 23, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Shilin Chen
  • Publication number: 20120255788
    Abstract: In one aspect, a drill bit is disclosed that, in one configuration, includes one or more cutters on a surface thereon configured to penetrate into a formation, at least one pad at the surface, an actuation device configured to supply a fluid under pressure to the pad to extend the pad from the surface, and a relief device configured to drain fluid supplied to the pad to reduce the pressure on the at least one pad when the force applied on the at least one pad exceeds a selected limit.
    Type: Application
    Filed: June 6, 2012
    Publication date: October 11, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Thorsten Schwefe, Chad J. Beuershausen
  • Patent number: 8240399
    Abstract: A drill bit is provided that includes a force application device on a body of the drill bit. The force application device includes a floating member and a force application member configured to extend from the floating member to apply a force on a wellbore wall when the drill bit is used to drill a wellbore and an actuator configured to actuate the force application member to apply the force to a wellbore wall during drilling of the wellbore.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: August 14, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Ajay V. Kulkarni, David K. Luce, John F. Bradford
  • Patent number: 8230952
    Abstract: Earth-boring tools comprise a bit body comprising a face and a plurality of blades extending radially outward over the face and forming gage regions. A shank is coupled to the bit body and includes a threaded portion for connecting to a drill string. A sleeve structure is positioned adjacent to the bit body and surrounds a portion of the shank, the sleeve structure extending from adjacent the bit body to proximate the threaded portion of the shank. An outer surface of the sleeve structure comprises a plurality of circumferentially spaced gage pads extending thereover and may comprise a plurality of breaker flats.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: July 31, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Thorsten Schwefe, Henning Finke, Thomas Ganz
  • Patent number: 8205686
    Abstract: In an aspect, a drill bit is provided that includes a pad on a face section. The pad extends from the bottom section upon application of a force thereon and retracts upon the removal of the force to control fluctuations of the drill bit during drilling of a wellbore.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: June 26, 2012
    Assignee: Baker Hughes Incorporated
    Inventor: Chad J. Beuershausen
  • Publication number: 20120111640
    Abstract: A downhole stabiliser (5), such as a drill motor stabiliser, comprises at least one reaming means and/or reinforcing means (10). The present invention also relates to an assembly (30), such as a downhole drilling assembly (31), comprising at least one such stabiliser (5) and/or a drill bit (40,41) comprising a gauge bit (42) at or near a drilling end (45) thereof, and a connection means (46) for connecting the drill bit (40,41) to a drill motor assembly (60), wherein the drill bit gauge (42) comprises a substantially cylindrical portion having a length less than or equal to approximately 1.0 times the nominal bit diameter. The present invention also relates to a novel locking mechanism (80), such as a lock and key mechanism, to allow locking of a shaft (70?), e.g. a motor drive shaft (71?), through or together with a stabiliser (5?).
    Type: Application
    Filed: March 19, 2010
    Publication date: May 10, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Andrew McPherson Downie, Pascal Michel Vitale, Bachar Boussi
  • Patent number: 8172010
    Abstract: A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel section comprising a blade, wherein the heel section is at an end of the drill bit opposite the cutting section, and wherein a diameter of the heel section is a full gage diameter, wherein the blade has a high spiral around the drill bit; and a clearance section between the cutting and heel sections, wherein the clearance section comprises a diameter less than full gage, and wherein clearance section extends from the gage cutters of the cutting section to the blade of the heel section.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: May 8, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Michael J. Strachan
  • Publication number: 20120012391
    Abstract: A drilling method and device is for the execution of diaphragm walls by cutters, (131, 105, 110) carried by a frame (130) supported by suspension and movers (102). A guide hole (200) is formed as far as the depth specified in the design at the center of the panel to be made. Excavation is started with the introduction into the guide hole (200) of a guide element (101) that is fixed with respect to the tool-holder frame and having geometry such as to copy the guide hole along which it slides during excavation. Excavation is carried out as far as the depth specified in the design. The tool is extracted from the excavation and the excavation is filled with concrete and a panel is formed. The method is repeated so as to form adjacent panels.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 19, 2012
    Applicant: Soilmec S.p.A.
    Inventors: Davide Trevisani, Stefano Trevisani, Maurizio Siepi, Carlo Crippa
  • Patent number: 8087479
    Abstract: A drill bit is provided that includes a force application device on a body of the drill bit. The force application device includes a force application member pivotally coupled to the drill bit and configured to extend from the drill bit body to apply force on a wellbore wall when the drill bit is used to drill a wellbore, and an actuator configured to actuate the force application member to apply force on a wellbore wall during drilling of the wellbore.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: January 3, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Ajay V. Kulkarni, David K. Luce, John F. Bradford
  • Patent number: 8051923
    Abstract: A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: November 8, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shilin Chen, Riun Ashlie
  • Publication number: 20110253454
    Abstract: A down hole tool including a compression surface, a compression surface axis, and at least one support member configured to attach the compression surface to a well drilling tool assembly, wherein the extendable support member is extendable by an extension force provided to the support member. The down hole tool is rotable relative to an axis of the well drilling tool assembly, and as the well drilling tool assembly rotates, the at least one compression device exerts a lateral force along a sidewall of a wellbore. Also, a method of forming filter cake comprising releasing a drilling fluid and contacting the drilling fluid with a mechanical pressure on the sidewall of the wellbore and the drilling fluid.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 20, 2011
    Applicant: M-I L.L.C.
    Inventor: Michael A. Freeman
  • Patent number: 7971662
    Abstract: In an aspect, a drill bit is provided that includes at least one blade profile having a side section and an adjustable pad on the side section that is configured to extend from the side section to cause the drill bit to alter a drilling direction when the drill bit is used to drill a wellbore. In addition, the drill bit may also include a fluid line configured to supply a fluid under pressure to the pad to cause the pad to extend from the side section.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 5, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: Chad J. Beuershausen
  • Patent number: 7971661
    Abstract: The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The chassis may be configured to be operably coupled with a first rotational motion source. The head may include a first plurality of cutters coupled with an end of the head, and the head may be rotatably coupled with chassis. The head may be configured to be operably coupled with a second rotational motion source. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: July 5, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Ashley Bernard Johnson, Geoffrey C. Downton, John M. Cook
  • Publication number: 20110155473
    Abstract: A drill bit stabilizing system comprising a body member having an axis and at least one recess formed in the body member housing at least one stabilizing member when in a first retracted position. The stabilizing member is positionable along a diagonal angle with the axis to a second extended operating position which extends downward and outward relative to the main body to selectively engage the surface of a pilot bore hole wall during a drilling operation so as to stabilize an under gauge drill bit used in association with the stabilizing system. The body member further comprises at least one fixed stabilizing surface positioned in an axially spaced relationship to the at least one moveable stabilizing member. The body member further comprises a gauge cutter positioned above the moveable stabilizing member and below the fixed stabilizing surface to expand the pilot hole to the final gauge.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 30, 2011
    Inventor: Richard C. Raney
  • Patent number: 7967083
    Abstract: A drill string having a drill bit with a bit body located between a shank and a working face. The working face has at least one cutting element and a jack element disposed partially within the drill bit body and partially protruding from the working face. The jack element is adapted to be rotated with respect to the bit body by a driving mechanism disposed within a bore of the drill string. A generator or motor with a rotor is incorporated into a torque transmitting mechanism that links the driving mechanism to the jack element, and configured so that at least one waveform is produced in the generator or motor when the jack element is rotated. The waveform is processed by an electronic processing device to determine the rotational position of the jack element.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: June 28, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Jim Shumway, David Wahlquist
  • Publication number: 20110100721
    Abstract: A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.
    Type: Application
    Filed: October 8, 2010
    Publication date: May 5, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Enis Aliko, Thorsten Schwefe
  • Patent number: 7926596
    Abstract: A drill bit comprises a bit body and a plurality of cutting blades extending radially from the bit body, the plurality of cutting blades further comprising cutting elements disposed thereon. The drill bit also comprises a plurality of utility blades extending radially from the bit body, the plurality of utility blades being free of cutting elements.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: April 19, 2011
    Assignee: Smith International, Inc.
    Inventors: Yuelin Shen, Youhe Zhang
  • Publication number: 20100319997
    Abstract: An assembly is provided to attach a whipstock to a mill/drill bit. The assembly includes an upper collar adapted for installation around a shank of the mill/drill bit. At least one connecting member is mounted at a first end to the upper collar. The connecting member extends downwardly from the upper collar and is adapted to fit within a junkslot of the mill/drill bit to which the upper collar is attached. A whipstock attachment structure is mounted to a second end of the at least one connecting member.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 23, 2010
    Applicant: Varel International, Ind., L.P.
    Inventors: William W. King, Michael Reese, Steven W. Drews
  • Patent number: 7849940
    Abstract: A drill bit having a plurality of cutters on its lower surface, each of which can having a plurality of PDC cutter elements disposed thereon. The cutting surface on each of the cutters is mounted in in an orientation that allows drilling of oversize boreholes which enables the drill bit to be turned more easily to facilitate the boreholes being drilled on a smaller radius. The placement of the cutters on each of the blades enables the drill bit to drill both vertically and laterally.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 14, 2010
    Assignee: Omni IP Ltd.
    Inventors: David Wilde, James Shamburger
  • Patent number: 7849939
    Abstract: The present invention recites a drill bit comprising a main body having an axis about which it is rotated in use, a cutting face, a connecting means for attaching the bit to a source of rotary motion, a gauge region intermediate said cutting face and the connecting means. Additionally the gauge region comprises at least one member movable between a first position in which the gauge region is bounded by an imaginary tubular surface of constant cross-section co-axial to the axis of rotation and a second position in which a portion of the member is located radially inwards, with respect to the axis of rotation, of its position when said member is in said first position. In accordance with the present invention, the gauge region whilst said member is in said second position being bound by an imaginary three dimensional conical sectional surface; and at least one actuator.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: December 14, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Geoffrey C. Downton, Richard Harmer
  • Patent number: 7814997
    Abstract: A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: October 19, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Enis Aliko, Thorsten Schwefe
  • Patent number: 7798256
    Abstract: The invention provides a fixed cutter drill bit for drilling through unconsolidated, highly abrasive formations. The bit includes a bit body having a cutting face and a side portion. The bit body comprising carbide matrix material. A plurality of blades azimuthally spaced about the cutting face and a plurality of cutters disposed along the blades. At least one gage pad is disposed along a side of the bit body and includes wear resistant gage elements formed of a material more wear resistant than the matrix material forming a portion of the gage pad. The wear resistant elements have a rounded surface and are embedded in gage pad material proximal a leading edge of the gage pad to provide a rounded wear-resistant edge or surface proximal the leading edge.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: September 21, 2010
    Assignee: Smith International, Inc.
    Inventors: Carl Hoffmaster, Shelton W Alsup, Michael G. Azar, Thomas W. Oldham, Stuart R. Oliver, Sidney J. Isnor
  • Patent number: 7753144
    Abstract: A drill bit having a bit body intermediate a shank and a working face having at least one cutting insert. A bore is formed in the working face co-axial within an axis of rotation of the drill bit. A jack element is retained within the bore by a retaining element that intrudes a diameter of the bore.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: July 13, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Francis Leany, Joe Fox, Tyson J. Wilde, Boyd B. Black
  • Publication number: 20100108397
    Abstract: Earth-boring tools comprise a shank comprising a distal connector including a set of threads thereon and a bit body comprising a shank connector, also comprising at least one set of threads thereon. The set of threads on the distal connector and the at least one set of threads on the shank connector are at least substantially bound together. Methods of forming such earth-boring tools are also disclosed, as well as methods of securing a bit body of an earth-boring tool to a shank.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventor: Nicholas J. Lyons
  • Publication number: 20100089662
    Abstract: A drill bit having a selected gauge diameter and operable to be positioned within a casing positioned within a rock formation, the casing comprising an casing inner wall having a casing inner diameter greater than the gauge diameter, wherein the positioning of the drill bit within the casing defines a drift distance corresponding to the distance between the gauge diameter and the casing inner diameter, the drill bit comprising a blade comprising a gauge cutter operable to cut an earth formation at the gauge diameter; and a protective insert coupled the drill bit such that a portion of the protective insert extends beyond the gauge diameter by a selected overgauge distance, wherein the protective insert is operable to engage the casing inner wall to substantially prevent the gauge cutter from engaging the casing inner wall as the drill bit is positioned through a selected length of the casing.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 15, 2010
    Applicant: Ulterra Drilling Technologies, L.L.C.
    Inventor: Matthew D. Mumma
  • Publication number: 20100038141
    Abstract: A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 18, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Ashley Bernard Johnson, Geoffrey C. Downton, John M. Cook
  • Publication number: 20100038140
    Abstract: A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The chassis may be configured to be operably coupled with a first rotational motion source. The head may include a first plurality of cutters coupled with an end of the head, and the head may be rotatably coupled with chassis. The head may be configured to be operably coupled with a second rotational motion source. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 18, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Ashley Bernard Johnson, Geoffrey C. Downton, John M. Cook
  • Publication number: 20100038139
    Abstract: A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be movably coupled with chassis. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 18, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Ashley Bernard Johnson, Geoffrey C. Downton, John M. Cook