With Bearing Or Seal Details Patents (Class 175/371)
  • Patent number: 10293461
    Abstract: A method for manufacturing a face seal may generally include positioning a machining device relative to the face seal such that the face seal is compressed between a machining surface of the machining device and a support member on which the face seal is supported. In addition, the method may include removing material from a seal flange of the face seal using the machining device while the face seal remains compressed between the machining device and the support member and monitoring a compressive load applied through the face seal as material is being removed from the seal flange. Moreover, the method may include adjusting the operation of the machining device to prevent further removal of material from the seal flange when the monitored compressive load is equal to a predetermined load setting.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 21, 2019
    Assignee: CNH Industrial America LLC
    Inventor: Brian Vik
  • Patent number: 10267358
    Abstract: A drill drive for a drilling rig includes a motor, by which a drive shaft is rotationally driven which is supported in a rotatable manner in a housing with a bearing arrangement having at least a radial bearing, a first axial bearing and a second axial bearing. On the first axial bearing a first force measuring device is arranged for determining a first axial force on the first axial bearing and on the second axial bearing a second force measuring device is arranged for determining a second axial force on the second axial bearing. A drilling rig, in particular for oil or gas drilling, with a drill mast, along which a drill string with a drilling tool is arranged, wherein on the drill mast a drill drive according to the invention is supported in a displaceable manner for rotationally driving the drill string.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: April 23, 2019
    Assignee: BAUER Equipment America, Inc.
    Inventors: Hans-Philipp Otto, Sebastian Soier
  • Patent number: 10208597
    Abstract: A cutter disc for a tunnel boring machine includes a middle disc portion defining a radially outer surface or edge for engaging a surface, a left toothed portion defining a first set of teeth set back from the outer edge, and a right toothed portion defining a second set of teeth set back from the outer edge. In an embodiment, a central bore through the cutter disc is configured to attach the cutter disc to a hub for rotatably mounting the cutter disc on a shaft. In an embodiment, the hub is formed integrally with the cutter disc. The left and right toothed portions provide structural support to the middle portion and facilitate rotation of the cutter disc when boring in soft or mixed conditions, but do not interfere with boring in hard rock conditions.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: February 19, 2019
    Assignee: The Robbins Company
    Inventor: Carl E. Lenaburg
  • Patent number: 10161190
    Abstract: A seal for a rolling cutter drill bit is provided. The seal has a ring shaped seal body having an inside diameter and an outside diameter, and a mud lobe and a grease lobe extending from the inside diameter of the seal body. The seal body has an asymmetrical, longitudinal cross-section such that, when positioned in a seal groove of the drill bit and compressed therein under downhole pressure, the mud lobe is maintained in contact with a seal land of the seal groove. The seal body may be provided with a garter spring and/or a textured pattern.
    Type: Grant
    Filed: August 7, 2016
    Date of Patent: December 25, 2018
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventor: Bruce Hawley Burr
  • Patent number: 10151148
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: December 11, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 9988850
    Abstract: A downhole seal system for roller cone drill bits includes a seal gland having a width larger than it depth. In one implementation, the seal gland includes a protrusion along its base on which a seal element seats. The seal element is a single, annular seal element with a recess formed therein so as to define two lobes. The seal element seats in the gland so that the recess engages the protrusion. The lobes function as separate seal elements, although they are a single unitary seal element disposed in a single gland.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: June 5, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Micheal B. Crawford, Mark E. Williams, Young H. Lee, David P. Duckworth, Zhaohui Shan
  • Patent number: 9869136
    Abstract: A clamping assembly may include a split-ring device and bearing for coupling to a driveshaft. The split-ring device may comprise split-ring shells having protrusions on an interior radial surface for positioning in grooves adjacent to radial protrusions on the driveshaft. In some aspects, the split-ring shells may include tabs corresponding to cavities on a first bearing for coupling the split-ring shell to the first bearing. In other aspects, the split-ring shells may be sized to create one or more gaps when positioned on the driveshaft. The first bearing may include one or more corresponding tabs for positioning in the one or more gaps created by the split-ring shells. A second bearing may be threadably coupled to the first bearing to suppress the axial and rotational movement of the clamping assembly separate from the driveshaft.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: January 16, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Hossam Mohamed Gharib, John Keith Savage, Steven Graham Bell
  • Patent number: 9808910
    Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate and a preformed polycrystalline diamond table including an interfacial surface bonded to the substrate and an opposing working surface. The preformed polycrystalline diamond table includes a proximal region extending from the interfacial surface to an intermediate location within the preformed polycrystalline diamond table that includes a metallic infiltrant infiltrated from the substrate, and a distal region extending from the working surface to the intermediate location that is substantially free of the metallic infiltrant. A boundary exists between the proximal and distal regions that has a nonplanar irregular profile characteristic of the metallic infiltrant having been infiltrated into the preformed polycrystalline diamond table.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: November 7, 2017
    Assignee: US SYNTHETIC CORPORATION
    Inventor: Mohammad N. Sani
  • Patent number: 9677341
    Abstract: An extended life seal is incorporated into a drill bit used for drilling a wellbore. The drill bit can include a seal surface, a seal which engages the seal surface, and a groove which compresses the seal greater on opposite axial sides than at a central portion of the seal. The drill bit may include the seal having a cylindrical surface which engages the seal surface, and another cylindrical surface opposite the first surface, and the groove having a third cylindrical surface which engages the second surface, and wherein the groove simultaneously biases the seal toward the seal surface on opposite axial sides of the third surface. The drill bit may include the seal having right cylindrical shaped inner and outer surfaces, and a contact pressure between the seal surface and the seal being greater at each opposite side of the seal than at a central portion of the seal.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: June 13, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Seth G. Anderle, Ping C. Sui, Mark E. Williams, Guy Lefort
  • Patent number: 9528066
    Abstract: An embodiment disclosed herein provides a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid; and elongated carbon nanoparticles that align in flow. In some embodiments, the lubricating composition may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: December 27, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ping Sui, David Duckworth
  • Patent number: 9493723
    Abstract: An embodiment disclosed herein provides a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid; and elongated carbon nanoparticles that align in flow. In some embodiments, the lubricating composition may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 15, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ping Sui, David Duckworth
  • Patent number: 9394942
    Abstract: A bearing assembly includes a support ring, a plurality of bearing-element carrier members coupled to the support ring, and a plurality of superhard bearing elements having a lateral periphery extending between a base and a superhard bearing surface. At least one superhard bearing element of the plurality of superhard bearing elements is attached to each of the plurality of bearing-element carrier members. A bearing apparatus includes a rotor, a stator, and a bearing assembly. A method for assembling a bearing assembly includes attaching at least one superhard bearing element to each of a plurality of bearing-element carrier members and coupling the plurality of bearing-element carrier members to a support ring.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 19, 2016
    Assignee: US Synthetic Corporation
    Inventor: S. Barrett Peterson
  • Patent number: 9388743
    Abstract: A sealing system is provided for a flanged joint. The sealing system includes a split seal and a spring. The split seal includes a radial outer surface, an axial outer surface, and a chamfered surface inclined with respect to the radial outer surface and the axial outer surface. The spring is disposed in urging contact with the chamfered surface and configured to apply an axial force, and a radial force on the axial outer surface, and the radial outer surface respectively.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 12, 2016
    Assignee: Solar Turbines Incorporated
    Inventor: Alejandro Manriquez
  • Patent number: 9316068
    Abstract: An improved gripper shoe for a coiled tubing injector having a gripper shoe having a plurality of arcuate gripper elements spaced apart at predetermined intervals, a gripper carrier having a base having an upper surface and a lower surface, a first wall and a second wall located on the upper surface of the base, a mechanism for securing the gripper carrier to a continuous chain of a coiled tube injector located on the lower surface of the gripper assembly, and a mechanism for securing the gripper shoe to the gripper carrier, such that the gripper shoe is securely received by, and releasable from, the gripper carrier.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: April 19, 2016
    Assignee: Tissa Engineering Inc.
    Inventors: Drago Crnogorac, Allan Joseph Pleskie, Wojciech Niemczewski, Matthew Gotch
  • Patent number: 9243714
    Abstract: A retractable assembly and a sealing system, the sealing system comprising: an essentially hollow, cylindrical housing with an inner space and a peripheral groove open to the inner space in the housing. The peripheral groove defines a plane in the housing and the normal of the plane is parallel to the longitudinal axis of the housing. The groove includes at least one, preferably two, extension spaces expanding the groove. The extension space is arranged on the side of the groove facing away from the inner space. An annular seal corresponding to the groove is arranged in the groove. The annular seal is formed of at least a first section facing the inner space and a second section facing away from the inner space.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: January 26, 2016
    Assignee: Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG
    Inventors: Ingrid Wunderlich, Thomas Pfauch
  • Patent number: 9181755
    Abstract: A downhole expandable roller bearing apparatus is described. The apparatus comprises a plurality of roller assemblies comprising at least one roller rotatably mounted between pistons. A retaining member such as a spline bar is removably mounted in a keyway formed in the body. Each piston comprises an aperture through which the spline bar projects in both the inwardly retracted and outwardly deployed positions of the pistons.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: November 10, 2015
    Inventor: Paul Bernard Lee
  • Patent number: 9163459
    Abstract: A sealing system includes a first gland in a cone and a first ring mounted in the first gland. A second ring is mounted to a shaft region. A third ring is positioned between the first and second rings. The first and third rings present a pair of metal seal faces. A second gland is formed between the second and third rings, with an o-ring sealing member installed within the third gland and radially compressed in a sealing relationship between the second and third rings. The second gland is sized to permit axial movement of the o-ring sealing member within the second gland in response to pressure changes. An energizer is configured to exert an axial force against the third ring so as to keep the metal seal faces in sealing contact. The axial force is applied at a radial position corresponding to a radial center the metal seal faces.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: October 20, 2015
    Assignee: Varel International, Ind., L.P.
    Inventor: Alan Otto Lebeck
  • Patent number: 9121504
    Abstract: The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. The features of a variable inlet size, a variable dynamic lip flank slope, and a reduction in the magnitude and circumferentially oriented portion of the lubricant side interfacial contact pressure zone at the narrowest part of the lip, individually or in combination thereof, serve to maximize interfacial lubrication in severe operating conditions, and also serve to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: September 1, 2015
    Assignee: Kalsi Engineering, Inc.
    Inventors: Lannie Laroy Dietle, John Erick Schroeder
  • Publication number: 20150144406
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a eons rotatably mounted on the hearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deform able in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 28, 2015
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 9016405
    Abstract: In an embodiment, a bearing assembly may include a support ring to which one or more superhard bearing elements may be mounted. The support ring may include one or more relief features configured to reduce residual stresses in the superhard bearing elements that are induced by brazing the superhard bearing elements to the support ring, operational loads, other processes, or combinations of the foregoing. Reducing the residual stresses in the superhard bearing elements may help prevent damage to the superhard bearing elements. The bearing assembly may be used in subterranean drilling systems and/or other types of systems.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 28, 2015
    Assignee: US Synthetic Corporation
    Inventors: Craig H. Cooley, Timothy N. Sexton
  • Patent number: 9004198
    Abstract: A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: April 14, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Ajay V. Kulkarni
  • Publication number: 20150090501
    Abstract: A roller cutter drill bit with mixed bearing types includes a bit body with at least one journal facet and a cavity facet. A cavity extends into the bit body from the cavity facet. The bit body is configured to rotate about a bit axis during drilling. A journal extends outward from the at least one journal facet. A first rotatable cutter that supports a first plurality of cutting structures has a journal portion received by the cavity. A second rotatable cutter that supports a second plurality of cutting structures has a cavity portion that is receives the journal.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Applicant: VAREL INTERNATIONAL IND., L.P.
    Inventor: William W. King
  • Patent number: 8967301
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: March 3, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 8955622
    Abstract: The roller cone is retained to the head with axial play taken out of the bearings with a tension rod that is tensioned from the rear of the head and away from the nose bearing region of the head allowing greater resistance to loading in the region of the nose bearing and a reduction in critical stresses. The tension rod has a flat and is oriented for tightening so that the flat faces grease passages to allow grease to gain access to the bearings through the bore for the tension rod and otherwise fill the bore so the tension rod actively supports loading in the head bearing. The nose bearing can be separately supported to the cone directly with a retainer threaded to the cone or a spacer between the bearings can be used so that tensioning of the rod takes out the axial play in both bearings with force transmitted to a retainer at the back of the cone.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: February 17, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Jon D. Schroder
  • Patent number: 8950515
    Abstract: The roller cone is retained to the head with axial play taken out of the bearings with a tension rod tensioned from the rear of the head and away from the nose bearing region of the head allowing greater resistance to loading in the region of the nose bearing and a reduction in critical stresses. The tension rod has a flat oriented for tightening and facing grease passages to allow grease to gain access to the bearings through the bore for the tension rod and otherwise fill the bore so the tension rod actively supports loading in the head bearing. The nose bearing is separately directly cone supported with a retainer threaded to the cone or a spacer between bearings can be used so that tensioning of the rod takes out the axial play in both bearings with force transmitted to a retainer at the back of the cone.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: February 10, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Jon D. Schroder
  • Patent number: 8865309
    Abstract: The present invention includes compositions and methods of supplying a corrosion inhibitor including placing a corrosion inhibitor attached to a nanostructure carrier, placing the nanostructure carrier containing the corrosion inhibitor at a location and the nanostructure carrier is capable of releasing the corrosion inhibitor.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: October 21, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Deepthi R. Setlur, Stefan M. Butuc
  • Patent number: 8844656
    Abstract: An earth bit includes a cutting cone carried by a lug, and an interstice seal assembly which forms a dynamic seal with a radial interstice lug surface of the lug. The interstice seal assembly includes a rigid sealing ring having lengthened and shortened arm portions. The lengthened arm portion extends outwardly from the shortened arm portion, and engages the radial interstice lug surface.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: September 30, 2014
    Assignee: Atlas Copco Secoroc LLC
    Inventor: Gregory W. Peterson
  • Patent number: 8834026
    Abstract: Bearings for downhole tools including a first bearing member and a second bearing member, at least one of the first and second bearing members having a channel formed therein. Methods of cooling bearings of downhole tools comprise flowing a fluid within a channel formed in at least one bearing member. Heat is transferred from at least the at least one bearing member to the fluid. The fluid is flowed away from the at least one bearing member.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 16, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Alejandro Flores, Aaron J. Dick, Chih Lin, John F. Bradford, Louise F. van Staden, Gregory B. Swanepoel, Clement D. van der Riet, Siu-Wah Wai, Dragan Vukovic, Klaus Tank
  • Publication number: 20140246245
    Abstract: A drill bit of the type used to drill a wellbore in the earth can comprise a bore formed in the drill bit, and a plug sealingly and reciprocably disposed in the bore, whereby the plug prevents fluid communication between sections of the bore in the drill bit. The plug can comprise a spherically-shaped member. The plug can comprise a floating plug sealingly and reciprocably disposed in the bore, whereby pressure in the different sections of the bore on respective opposite sides of the plug is substantially equalized.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 4, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Micheal B. CRAWFORD
  • Publication number: 20140224549
    Abstract: A sealing system includes a first gland in a cone and a first ring mounted in the first gland. A second ring is mounted to a shaft region. A third ring is positioned between the first and second rings. The first and third rings present a pair of metal seal faces. A second gland is formed between the second and third rings, with an o-ring sealing member installed within the third gland and radially compressed in a sealing relationship between the second and third rings. The second gland is sized to permit axial movement of the o-ring sealing member within the second gland in response to pressure changes. An energizer is configured to exert an axial force against the third ring so as to keep the metal seal faces in sealing contact. The axial force is applied at a radial position corresponding to a radial center the metal seal faces.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicant: VAREL INTERNATIONAL, IND., L.P.
    Inventor: Alan Otto LEBECK
  • Publication number: 20140224547
    Abstract: A sealing system includes a first gland in a cone and a second gland in a shaft region. A first ring is mounted in the first gland, a second ring is mounted in the second gland and a third ring is positioned between the first and second rings. The first and third rings present a pair of metal seal faces. A third ring is mounted to the second ring through a set of mounting pins which permit axial movement of the third ring. A biasing spring is mounting in the second ring and configured to exert an axial force against the third ring so as to keep the metal seal faces in sealing contact. A third gland is formed between the second and third rings, with an o-ring sealing member installed within the third gland and compressed in a sealing relationship between the second and third rings.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicant: VAREL INTERNATIONAL, IND., L.P.
    Inventor: Alan Otto LEBECK
  • Publication number: 20140224548
    Abstract: A sealing system includes a first gland in a cone and a second gland in a shaft region. A first ring is mounted in the first gland, a second ring is mounted in the second gland and a third ring is positioned between the first and second rings. The first and third rings present a pair of opposed metal seal faces. A biasing spring is configured to exert an axial force against the third ring so as to keep the metal seal faces in sealing contact. A third gland is formed between the second and third rings, with an o-ring sealing member installed within the third gland and compressed in a sealing relationship between the second and third rings. The third ring includes a sealing region supporting the metal seal face and a body region supporting the third gland, with the sealing region pivotally coupled to the body region.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicant: Varel International, Ind., L.P.
    Inventor: Alan Otto LEBECK
  • Patent number: 8800689
    Abstract: A drill bit of the type used to drill a wellbore in the earth can comprise a bore formed in the drill bit, and a plug sealingly and reciprocably disposed in the bore, whereby the plug prevents fluid communication between sections of the bore in the drill bit. The plug can comprise a spherically-shaped member. The plug can comprise a floating plug sealingly and reciprocably disposed in the bore, whereby pressure in the different sections of the bore on respective opposite sides of the plug is substantially equalized.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: August 12, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Michael B. Crawford
  • Patent number: 8800686
    Abstract: Various embodiments relate to a bearing assembly including a support ring configured to reduce thermal warping under operational temperature conditions, a bearing apparatus that may utilize such a thrust-bearing assembly, and applications that incorporate the disclosed bearing apparatuses such as downhole motors in subterranean drilling systems, directional drilling systems, and many other apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed circumferentially about an axis. The thrust-bearing assembly further includes a support ring having the plurality of superhard bearing elements mounted thereto.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: August 12, 2014
    Assignee: US Synthetic Corporation
    Inventors: Timothy N. Sexton, Craig H. Cooley
  • Publication number: 20140216824
    Abstract: A drill head including a tool holder, chisel supports mounted thereon and drill bits. According to this invention, the chisel supports can be separated from the tool holder.
    Type: Application
    Filed: June 28, 2012
    Publication date: August 7, 2014
    Inventors: Karl Kammerer, Wolfgang Essig
  • Patent number: 8783385
    Abstract: A drill tool includes a bit body, at least one bearing shaft extending from the bit body and a cone mounted for rotation on the bearing shaft. A mechanical seal is disposed between the bearing shaft and the cone in a seal gland. The mechanical seal includes a rigid seal ring having a dynamic sealing surface with the cone and another non-sealing surface exposed to an aperture in the seal gland. The mechanical seal further includes at least one cooling channel formed in the another non-sealing surface of the rigid seal ring, the cooling channel having an open end in fluid communication with the aperture in the seal gland.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: July 22, 2014
    Assignee: Varel International Ind., L.P.
    Inventor: Xiaobin Lu
  • Publication number: 20140196956
    Abstract: A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row.
    Type: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Prabhakaran K. Centala, Zhehua Zhang
  • Patent number: 8752655
    Abstract: A drill tool includes a cone mounted for rotation on a bearing shaft that extends from a bit head. The cone has a first planar base surface opposed to a second planar base surface of the bit head. A first annular groove is formed in the first planar base surface, and a second annular groove is formed in the second planar base surface. The first and second annular grooves are at least partially aligned with each other. The combination of the first and second annular grooves form a first annular gland. A protector ring is inserted into the first annular gland, and functions to divide a fluid path between the bearing shaft of the drill tool and an external environment into a plurality of parallel fluid paths that pass around the protector ring. Each parallel fluid path includes a convolution defined by a plurality of fluid direction changing corners.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 17, 2014
    Assignee: Varel International Ind., L.P.
    Inventor: Thomas Gallifet
  • Patent number: 8746374
    Abstract: A drill tool comprises includes a bit body, at least one bearing shaft extending from the bit body and a cone mounted for rotation on the bearing shaft. The bearing system for the tool includes a radial thrust bearing from which cone pumping pressure pulsation originates. A lubricant sealing system including an annular seal gland and a seal ring retained within the annular seal gland functions to retain lubricant in the bearing system. The tool further includes a lubricant cone pumping pressure restrictor system formed by an annular gland (separate from the annular seal gland) and a pressure restricting ring retained within the annular gland. The lubricant cone pumping pressure restrictor system is positioned between the radial thrust bearing system and the lubricant sealing system and is adapted to attenuate cone pumping lubricant pressure pulsation from acting on the seal ring retained within the annular seal gland.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: June 10, 2014
    Assignee: Varel International Ind., L.P.
    Inventors: David Harrington, Thomas Gallifet, Xiaobin Lu
  • Publication number: 20140138157
    Abstract: A down-hole drilling apparatus includes a bearing housing defining a longitudinal axis and upper and lower portions. The upper portion of the bearing housing is configured for connection to a drill string, and at least one annular bearing package disposed within the bearing housing. A drill bit is coupled to the bearing housing and rotatable with respect to the longitudinal axis. The drill bit includes a leading body supporting a plurality of cutters thereon for engaging a subterranean rock formation, a shank portion projecting from the leading body, and a mandrel portion engaging the shank portion and defining an inseparable connection therewith. The mandrel portion extends longitudinally into the bearing housing and through the at least one annular bearing package.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Inventor: Gerald Heisig
  • Patent number: 8721182
    Abstract: A downhole drilling assembly which includes a drill bit assembly, and a mud motor, and a bearing assembly disposed between the drill bit assembly and the mud motor, wherein the bearing assembly includes an offset portion.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 13, 2014
    Inventor: Nicu Cioceanu
  • Patent number: 8695732
    Abstract: A rotary cutter mount for an earth-boring cutter is provided which includes a ball bearing journal [100] adapted to be coupled to a cutter body [210], having a minimum [110] and a maximum [120] cylindrical diameter, and a first [115] and second [116] mounting ends. The maximum diameter [120] defines a journal body [122] which includes an exterior surface adapted to be rotationally coupled to the interior surface of the cutter body [210] so as to allow the cutter body [210] to rotate freely with respect to the bearing journal [110]. The minimum [110] diameter defines a shaft portion having sealing surfaces. The first [115] and a second [116] mounting ends are shaped to enable a rotationally fixed positioning of the bearing journal [100] in a yoke of a corresponding cutter head-plate support bracket. A row of ball-bearing races [126] is recessed to extend circumferentially about the exterior surface of the journal body [122].
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: April 15, 2014
    Inventor: Stu Blattner
  • Patent number: 8689907
    Abstract: Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the sealing system for a roller cone rock bit. The surface texturing produces a regular or repeated patterned dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: April 8, 2014
    Assignee: Varel International Ind., L.P.
    Inventor: Xiaobin Lu
  • Patent number: 8672060
    Abstract: A drill bit includes a bit body comprising at its upper end a connection adapted to connect to a drill string and at its lower end a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit. A plurality of roller cones are rotatably mounted on the plurality of journals and at least three rows of cutting elements are disposed on each of the plurality of roller cones. The outermost row of the at least three rows of cutting elements has an extension height to diameter ratio greater than a mid row, and the mid row has an extension height to diameter ratio greater than an innermost row.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 18, 2014
    Assignee: Smith International, Inc.
    Inventors: Prabhakaran K. Centala, Zhehua Zhang
  • Patent number: 8631864
    Abstract: An apparatus for downhole operation. The apparatus comprising a support body having a surface located in a borehole and a coating on an at least a portion of the surface of the support body. The coating is an inert material selected for reducing friction and corrosion.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: January 21, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Richard Saenger, Jean Desroches, Natalia Quisel
  • Publication number: 20130319770
    Abstract: A seal for a rolling cutter drill bit is provided. The seal has a ring shaped seal body having an inside diameter and an outside diameter, and a mud lobe and a grease lobe extending from the inside diameter of the seal body. The seal body has an asymmetrical, longitudinal cross-section such that, when positioned in a seal groove of the drill bit and compressed therein under downhole pressure, the mud lobe and grease lobe are maintained in contact with a seal land of the seal groove. The seal body may be provided with a garter spring and/or a textured pattern.
    Type: Application
    Filed: February 7, 2012
    Publication date: December 5, 2013
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventor: Bruce H. Burr
  • Patent number: 8567491
    Abstract: Device for lining the wall of a wellbore as it is being drilled using a drill string having a drill bit on the lower end thereof. The device has a receptacle for a cylindrically gathered pack of flexible tubing capable of being supported around the outside of the drill string near the lower end thereof on a plurality of bearings, a radially expandable locking device attachable to one end of the flexible tubing and being capable of being expanded against the wellbore wall to lock the end of the flexible tubing in place in the wellbore, and a conduit having an inlet upstream of the receptacle and an outlet downstream of the receptacle. A pump is located in the conduit or abutting the inlet or outlet thereof, and pumps the drilling fluid so that a fluid pressure inside the liner is greater than a fluid pressure at the drill bit.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 29, 2013
    Assignee: BP Exploration Operating Company Limited
    Inventor: Paul George Lurie
  • Patent number: 8534389
    Abstract: A drill tool includes a bit body, at least one bearing shaft extending from the bit body and a cone mounted for rotation on the bearing shaft. An outer bearing surface of the bearing shaft includes a non-loading zone. A first groove and a second groove are formed in the outer bearing surface at the non-loading zone. The first and second grooves are both circumferentially offset from each other and axially offset from each other. One or more of the grooves includes an opening for making a fluid connection to an internal lubricant channel within this bearing shaft. The circumferential and axial offsetting of the first and second grooves define a plurality of attenuation zones that function to restrict propagation of a cone pumping pressure pulse towards a sealing system of the drill tool.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 17, 2013
    Assignee: Varel International, Ind., L.P.
    Inventors: Thomas Gallifet, David Harrington
  • Publication number: 20130199693
    Abstract: A tool component comprising a wear part covered at least in part by a connection member, the wear part having a specified hardness and the connection member being a metal or alloy, and the wear part comprising a surface that includes one or more depressions or projections therefrom, and the connection member having been pressed against that surface so that at least the surface of the connection member that faces the wear part surface follows the profile of the wear part, whereby relative movement between the wear part and connection member is substantially prevented. The metal or alloy connection member may be readily attached to a tool body for example by brazing of the like. The wear part may comprise a material that is not readily brazeable, for example a ceramic material or a cermet or a superhard material or a composite of such materials.
    Type: Application
    Filed: August 23, 2011
    Publication date: August 8, 2013
    Inventors: Klaus Tank, Siu-Wah Wai, Louise Frances Van Staden
  • Patent number: 8459379
    Abstract: A method of reducing contact pressure between bearing surfaces of a well tool can include constructing a structure which supports one bearing surface in contact with the other bearing surface, and reducing contact pressure between the bearing surfaces by relieving strain energy in the structure. A well tool can include one bearing surface which contacts another bearing surface. There is a transition between contact and lack of contact between the bearing surfaces. A structure supporting one of the bearing surfaces can have a reduced stiffness, whereby a contact pressure between the bearing surfaces is reduced at the transition. The bearing surfaces can be formed on a thrust bearing, plain bearing, or other type of bearing between components of the well tool.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: June 11, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ping C. Sui, Gary E. Weaver