Noncutting Portion Forwardly Of Rolling Cutter (e.g., Reamer) Patents (Class 175/344)
  • Patent number: 8905158
    Abstract: An underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and as the tool element is urged across the curved actuation surface, the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: December 9, 2014
    Assignee: Paradigm Oilfield Services Limited
    Inventors: Darren Ritchie, Krzysztof Machocki, Alan Mackenzie
  • Publication number: 20140338979
    Abstract: A reamer for use in underground drilling back-reaming operations. The reamer comprises a body comprising a plurality of pockets. The pockets are configured such that an arm, a rolling cutter, and a retainer may fit within each of the pockets. Each of the rolling cutters is connected to each of the arms via a spindle. The rolling cutters are held on the spindle and connected to each of the pockets via a retainer. Each of the arms are secured to each of the pockets via a plurality of fasteners. A mechanical lock is used to secure at least one of the fasteners in place. Each of the arms comprise a grease passage and a pressure compensation system. The rolling cutters are replaceable with rolling cutters of like size or rolling cutters of different sizes and shapes.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 20, 2014
    Applicant: The Charles Machine Works, Inc.
    Inventor: Floyd R. Gunsaulis
  • Patent number: 8844655
    Abstract: A joint connecting a pair of members rotatable about a common axis end to end includes a first member having a threaded end portion and a non-circular exterior surface rearwardly of the threaded end portion, a second member having a threaded socket wherein the threaded end portion of the second member can be engaged, and a non-circular exterior surface, a ground engagement sleeve having a non-circular profile on an inner surface thereof whereby the sleeve can be slidably mounted on the non-circular exterior profiles of the first and second members when such profiles are brought into alignment by rotation of one member relative to the other in a manner effective to pass torque from one member to the other by means of the non-circular profiles, a first pair of alignable holes in the sleeve and first member to receive a fastener to secure the sleeve to the first member and a hole in the second member penetrating the threaded socket and positioned to receive a fastener to secure the second member to a third membe
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Earth Tool Company, LLC
    Inventor: Robert F. Crane
  • Patent number: 8657038
    Abstract: An expandable reamer apparatus and stabilizer sub having at least one rib thereon attached thereto for drilling a subterranean formation.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: February 25, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Mark R. Kizziar, Mark A. Jenkins
  • Publication number: 20130306375
    Abstract: The Smart Reamer® Tool, Apparatus or Method is used to underream an oil or natural gas well while interlinked calipers and calibration sensors simultaneously record data relating to the geometry of the drilling operation (well diameter, diameter of the underreamed zone) and drilling fluid properties (density). Further sensors provide data on the relative position of the cutting and stabilizing blocks. Other sensors measure vibration data. All the sensors are interlinked by means of microprocessors which compare and correlate said data to automatically verify and deliver a desired wellbore diameter without the need to unnecessarily stop drilling or trip out of the hole.
    Type: Application
    Filed: July 24, 2013
    Publication date: November 21, 2013
    Inventor: Wajid Rasheed
  • Patent number: 8584776
    Abstract: Methods, systems, and tool assemblies for distributing weight between a bit and a reamer device are disclosed. For example, at least one of the drill bit and the reamer may be configured to selectively distribute a weight-on-bit between the drill bit and the reamer, such as within a predetermined range. Additionally, methods of drilling wellbores may include selectively distributing a weight-on-bit applied to a bottom hole assembly between a drill bit and a reamer of the bottom hole assembly. Also, a reamer may be configured to exhibit a first maximum rate-of-penetration into a relatively hard formation, and a drill bit may be configured to exhibit a second maximum rate-of-penetration into a relatively soft formation that is less than the first maximum rate-of-penetration.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: November 19, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Mark E. Anderson, William C. Thompson, Jim R. Powers
  • Patent number: 8579050
    Abstract: A reamer bit for use in earth boring operations comprising a body, four cutter mounts, rolling cutters on each mount, and cutting elements disposed on each cutter arranged so adjacent cutting swaths formed by the bit are created by cutting elements on cones of oppositely disposed cutter mounts. The swaths are generally curvilinear, wherein the outermost swaths are formed by cutting element rows on the outer portion of the cutters. The reamer bit can further comprise a pilot bit.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: November 12, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Rudolf Carl Pessier, Scott Allan Young, Robert J. Buske, Mark Phillip Blackman, Gregory L. Ricks
  • Patent number: 8561726
    Abstract: Systems and methods for controlling deviations during drilling operations include securing a plurality of stabilizers to a lower portion of a drill string. The stabilizers can have a substantially triangular cross-sectional area oriented perpendicular to the longitudinal axis of the drill string, and a plurality of blades secured to the stabilizer at points associated with corners of the triangular cross-sectional area. The resulting system can exhibit improved stability and stiffness, an improved flow area, a reduced annular velocity, an increased penetration rate, and a longer usable life.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 22, 2013
    Inventors: John A. Salzer, III, David Lane Evans, Glenn Patrick Coty, Ronald Thorsten Eckmann
  • Publication number: 20130186693
    Abstract: A boring tool having downhole hammered impact elements that present to the bore face from platforms or plateaux of the work face of the tool, such work face having shear cutters able to benefit over the bore face from disruption caused by the impact elements.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicant: Flexidrill Limited
    Inventors: Gregory Donald West, Roland Greenwood
  • Patent number: 8464813
    Abstract: A raise boring reamer assembly includes a saddle, and a journal assembly carried by the saddle. The journal assembly includes nose and gage shanks, and a cutter is carried by the journal assembly. Nose and gage wiper rings are positioned proximate to the nose and gage shanks, respectively. The nose and gage wiper rings move debris in opposed directions in response to the rotation of the cutter.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: June 18, 2013
    Assignee: Atlas Copco Secoroc LLC
    Inventor: Andrew J. Osborne, Jr.
  • Publication number: 20130133954
    Abstract: A roller reamer includes a roller assembly deployed in a corresponding axial recess in a tool body. The roller assembly is retained in the axial recess via compound wedging action provided by at least one retention assembly. One or more embodiments utilize first and second retention assemblies located at first and second axially opposed end portions of the roller assembly. The retention assembly includes first and second wedges, the first of which converts a substantially radially directed force to an axially directed force and the second of which converts the axially directed force to a cross-axially directed retention force that retains the roller assembly in the axial recess.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 30, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventor: SMITH INTERNATIONAL, INC.
  • Publication number: 20130126244
    Abstract: Exemplary drill tools for placement in a drill string may include a body; a plurality of reamer cutters; and a plurality of ball and socket connectors configured to attach the plurality of reamer cutters to the body. Each of the plurality of reamer cutters may be replaceable by removing at least one of the plurality of ball and socket connectors from the reamer body. Each of the ball and socket connectors may be attached to the reamer body with bolts. Each of the ball and socket connectors may include titanium dioxide and/or titanium carbide coatings where the connectors interface with the reamer cutters.
    Type: Application
    Filed: December 3, 2012
    Publication date: May 23, 2013
    Inventor: Sheldon Hansen
  • Patent number: 8347989
    Abstract: A hole opener having a hybrid reaming section for reaming subterranean wellbores may include a tubular reamer body having a longitudinal axis and upper and lower ends, a rolling cutter mount coupled to the body, a rolling cutter rotatably coupled to the mount, and a fixed blade coupled to the body adjacent the mount. A method of forming a hybrid reamer tool for downhole use may include providing a tubular stem having couplers on the upper and lower ends, coupling a reamer body having an outer periphery to the stem between the stem upper and lower ends, coupling a rolling cutter mount to the outer periphery of the reamer body, the mount having a rolling cutter rotatably coupled thereto, and coupling a fixed blade to the outer periphery of the reamer body adjacent the rolling cutter mount.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: January 8, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Robert J. Buske, Rudolf C. Pessier
  • Patent number: 8281876
    Abstract: A reamer includes a mandrel defining a mandrel axis and arms extending radially from the mandrel. Each arm has a proximal end and a distal end. The reamer includes a cutting head disposed on the distal end of each arm and cutting teeth disposed on each cutting head. The cutting heads are arcuately spaced about the central mandrel to allow the movement of debris axially along the central mandrel and at least one of the arms defines a square cross-sectional shape.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 9, 2012
    Assignee: Southeast Directional Drilling, LLC
    Inventors: John M. Heieie, Steven L. Ugrich
  • Patent number: 8256536
    Abstract: A backreamer includes a distal end configured for connection to product and a proximal end configured for attachment to a distal end of a drill string. The backreamer includes a backreaming cutter having a cutting side that faces toward the proximal end of the backreamer. The backreamer also includes a proximal assembly that extends between the proximal end of the backreamer and the backreaming cutter. The proximal assembly defines a vacuum passage for removing material cut by the backreaming cutter. The backreamer further includes a drive stem for transferring torque to the backreaming cutter for rotating the backreaming cutter. The drive stem is rotatably supported within the proximal assembly such that the drive stem and the backreaming cutter are rotatable relative to the proximal assembly. The backreamer additionally includes a distal assembly that extends between the backreaming cutter and the distal end of the backreamer.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: September 4, 2012
    Assignee: Vermeer Manufacturing Company
    Inventors: Stuart Harrison, Keith Allen Hoelting, Matthew Stephen Vos
  • Publication number: 20120037422
    Abstract: The Smart Reamer® Tool, Apparatus or Method is used to underream an oil or natural gas well while interlinked calipers and calibration sensors simultaneously record data relating to the geometry of the drilling operation (well diameter, diameter of the underreamed zone) and drilling fluid properties (density). Further sensors provide data on the relative position of the cutting and stabilizing blocks. Other sensors measure vibration data. All the sensors are interlinked by means of microprocessors which compare and correlate said data to automatically verify and deliver a desired wellbore diameter without the need to unnecessarily stop drilling or trip out of the hole.
    Type: Application
    Filed: December 13, 2010
    Publication date: February 16, 2012
    Inventor: Wajid Rasheed
  • Publication number: 20120037426
    Abstract: The present invention relates to downhole tools, and in particular an underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and as the tool element is urged across the curved actuation surface, the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.
    Type: Application
    Filed: February 11, 2010
    Publication date: February 16, 2012
    Applicant: Paradigm Oilfield Services Limited
    Inventors: Darren Ritchie, Krzysztof Machocki, Alan Mackenzie
  • Patent number: 8061451
    Abstract: Systems for controlling deviations during drilling operations, including a transmission housing and a bearing assembly secured between a stator housing and a drill bit. Two stabilizers are secured to the transmission housing, and one stabilizer is secured to the bearing assembly to provide enhanced stability to the lower portion of the drill string. The stabilizers can have a triangular shaped body for increasing flow area, reducing annular velocity, and increasing stiffness of the system. The stabilizers can be rotationally offset from one another to facilitate maintaining the gauge of the borehole. The transmission housing can be a one-piece construction to minimize connections within the system and improve reliability. The stabilizers can include laser clad metal surfaces and diamond dome inserts to prevent wear and erosion. A triangular reamer can be included beneath the stabilizers to further prevent wear to the stabilizers and to add stability to the drill bit.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: November 22, 2011
    Assignee: Strata Directional Technology, LLC
    Inventors: John A. Salzer, III, David Lane Evans, Glenn Patrick Coty, Ronald Thorsten Eckmann
  • Patent number: 8042625
    Abstract: A drilling tool has a body with a main drilling region and a pilot drilling region, eccentric to the main drilling region. The main drilling region has main blades and the pilot drilling region has pilot blades. The main drilling region has a main pass-through diameter, centered upon a first axis, one of the main blades extending to the main pass-through diameter, the pilot region having a pilot gauge diameter, centered upon a second axis of rotation at least one of the pilot blades extending to the pilot gauge diameter, wherein part of a circle of diameter equal to the pilot gauge diameter and centered upon the second axis of rotation extends outside of a circle of diameter equal to the main pass-through diameter and centered upon the first axis.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: October 25, 2011
    Assignee: National Oilwell Varco, L.P.
    Inventors: Ridha Chafai, James Edward Wallace
  • Patent number: 8028769
    Abstract: A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body. The reamer bit outer periphery with its stabilizers and bit body has a radial profile approximating a circle thereby reducing dynamic perturbations during drilling operations.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 4, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Rudolf Carl Pessier, Robert J. Buske, James Overstreet
  • Patent number: 7958950
    Abstract: A reamer for underground boring is provided. The reamer includes at least: (a) a center mandrel, wherein the center mandrel defines a mandrel axis; (b) a plurality of radial members extending radially from the center mandrel; (c) a plurality of cutting heads, wherein each of the cutting heads: (i) is supported by at least one of the radial members; (ii) is arcuately spaced-apart around the center mandrel from the other cutting heads; (iii) has a rounded surface; and (d) a plurality of cutting teeth on the rounded surface of each of the cutting heads. A method of horizontal drilling with the reamer is also provided.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: June 14, 2011
    Assignee: Southeast Directional Drilling, LLC
    Inventors: Mark Osadchuk, Steven L. Ugrich
  • Patent number: 7938204
    Abstract: A reamer bit for use in earth boring operations comprising a body, mounting elements on the bit body having rolling cutters, and nozzles configured to emit a cleaning spray that is angled with respect to the well bottom. The cleaning spray may be angled up to about 20° with respect to the well bottom. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 10, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: Robert J. Buske
  • Publication number: 20110056751
    Abstract: Reamer elements for use with roller reamers and other types of reamer apparatuses, methods for forming such reamer elements, and methods for performing drilling operations using such reamer elements are disclosed. The reamer element includes a body formed from a matrix of tungsten carbide and at least one binding metal, and can include a tube disposed therethrough. In use, the body resists compressive forces, while the tube resists tensile forces, thereby preventing deformation of the reamer element. The matrix material of the body provides increased wear resistance, decreased magnetic interference, decreased yield, and increased weight on a drill bit when compared to conventional steel components.
    Type: Application
    Filed: August 19, 2010
    Publication date: March 10, 2011
    Inventors: James Shamburger, Vincente S. Salvo
  • Publication number: 20100307837
    Abstract: A casing end tool has a bowl-like (or cup-like) body defined by a wall having an outer convex surface and an inner concave surface opposite of the outer convex surface. The bowl-like body has a center axis. The inner concave surface is non-axisymmetric with respect to the center axis, while the outer convex surface is axisymmetric with respect to the center axis. The non-axisymmetric configuration is provided in one implementation through the presence of a set of raised boss or land structures formed on the inner concave surface.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Applicant: Varel International, Ind., L.P.
    Inventors: William W. King, Michael Reese, Steven W. Drews, Ian Alastair Kirk
  • Publication number: 20100282511
    Abstract: A wired reamer for use on a downhole drillstring is disclosed. In some embodiments, the reamer includes a reamer body comprising a pathway therethrough and wiring located within the pathway for transmitting at least one of power or communications. In other embodiments, the reamer includes a reamer body comprising a pathway enclosed within the reamer body, wiring located within the pathway for transmitting at least one of power or communications, a sensor and a processor located within the reamer body. The sensor is connected with the wiring for transmitting data measured by the sensor through the wiring, and the processor is connected with the wiring for receiving the data from the sensor.
    Type: Application
    Filed: June 5, 2007
    Publication date: November 11, 2010
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Christopher A. Maranuk, Terence Allan Schroter, Kevin Glass
  • Publication number: 20100263880
    Abstract: A downhole seal comprises a seal body having a swellable material configured to swell upon exposure to a swelling activator to establish a seal within a wellbore, and at least one protection element configured to protect at least a portion of the seal body when the downhole seal is translated within a wellbore. The protection element defines a reaming element configured to ream a portion of the wellbore while the downhole seal is translated therethrough.
    Type: Application
    Filed: April 19, 2010
    Publication date: October 21, 2010
    Applicant: Swellfix B.V.
    Inventor: Neale Carter
  • Publication number: 20100206635
    Abstract: The present disclosure relates to a tunneling apparatus including a pipe string having a distal end and a proximal end. The pipe string includes a plurality of pipe-sections connected end-to end. The pipe string also includes a cutting head coupled to a distal-most one of the pipe-sections. The pipe string defines a vacuum passage that extends through the pipe string from the proximal end to the distal end of the pipe string. A source of vacuum is in fluid communication with the vacuum passage for drawing cuttings through the vacuum passage. A blockage sensor can be used for sensing whether a precursor blockage condition exists within the vacuum passage. A source of air pressure can be used to force air distally through the pipe string to assist in moving cuttings proximally through the vacuum passage.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 19, 2010
    Inventors: Stuart Harrison, Andis Salins, Matthew Arlen Mills, Melvin Nguyen
  • Publication number: 20100206636
    Abstract: The present disclosure relates to a backreamer including a distal end configured for connection to product and a proximal end configured for attachment to a distal end of a drill string. The backreamer includes a backreaming cutter having a cutting side that faces toward the proximal end of the backreamer. The backreamer also includes a proximal assembly that extends between the proximal end of the backreamer and the backreaming cutter. The proximal assembly defines a vacuum passage for removing material cut by the backreaming cutter. The backreamer further includes a drive stem for transferring torque to the backreaming cutter for rotating the backreaming cutter. The drive stem is rotatably supported within the proximal assembly such that the drive stem and the backreaming cutter are rotatable relative to the proximal assembly. The backreamer additionally includes a distal assembly that extends between the backreaming cutter and the distal end of the backreamer.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 19, 2010
    Inventors: Stuart Harrison, Keith Allen Hoelting, Matthew Stephen Vos
  • Patent number: 7775303
    Abstract: An apparatus for a drilling tool includes a pilot drilling bit, a reamer, and a pilot body which is disposed to support the reamer and the pilot drilling bit at the end of a casing tube. The reamer includes a closed position in which the parts of the tool are concentric with one another and displaceable through the casing tube, and an open position in which at least a part of the reamer is located radially outside the casing tube. The pilot body includes a male portion which extends through the reamer, the male portion of the pilot body forming a cam surface for transferring rotation energy to the reamer and for switching the reamer between the closed and open positions, and the male portion of the pilot body being insertable in a recess in the pilot drilling bit.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: August 17, 2010
    Inventor: Ove Göting
  • Patent number: 7730969
    Abstract: A reamer for underground boring is provided. The reamer includes at least: (a) a center mandrel, wherein the center mandrel defines a mandrel axis; (b) a plurality of radial members extending radially from the center mandrel; (c) a plurality of cutting heads, wherein each of the cutting heads: (i) is supported by at least one of the radial members; (ii) is arcuately spaced-apart around the center mandrel from the other cutting heads; (iii) has a rounded surface; and (d) a plurality of cutting teeth on the rounded surface of each of the cutting heads. A method of horizontal drilling with the reamer is also provided.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: June 8, 2010
    Assignee: Southeast Directional Drilling, LLC
    Inventors: Mark Osadchuk, Steven L. Ugrich
  • Publication number: 20090166093
    Abstract: A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body. The reamer bit outer periphery with its stabilizers and bit body has a radial profile approximating a circle thereby reducing dynamic perturbations during drilling operations.
    Type: Application
    Filed: December 22, 2008
    Publication date: July 2, 2009
    Applicant: Baker Hughes Incorporated
    Inventors: Rudolf Carl Pessier, Robert J. Buske, James Overstreet
  • Publication number: 20090159338
    Abstract: A reamer bit for use in earth boring operations comprising a body, mounting elements on the bit body having rolling cutters, and nozzles configured to emit a cleaning spray that is angled with respect to the well bottom. The cleaning spray may be angled up to about 20° with respect to the well bottom. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body.
    Type: Application
    Filed: September 26, 2008
    Publication date: June 25, 2009
    Applicant: Baker Hughes Incorporated
    Inventor: Robert J. Buske
  • Patent number: 7445063
    Abstract: A drill bit assembly for direct removal of rock with a rotatable bit assembly (5) that includes a plurality of cutters or choppers (7). According to the invention, an number of cutters (7) are so disposed in relation to each other or the bit assembly (5) that a subsequent cutter (7b), seen in the direction of rotation, will engage an edge created by the action of preceding cutter (7a).
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: November 4, 2008
    Assignee: Atlas Copco Secoroc AB
    Inventor: Lars Holmgren
  • Patent number: 7445062
    Abstract: An arrangement for replenishing lubricating grease in drill cutters (3) that include a conical outer barrel (7) which is rotatable about a shaft (5) disposed centrally in the cutter, wherein there is provided in the cutter shaft (5) a passageway (16) that extends along the shaft from the cutter end of largest diameter and that connects with a transverse passageway (18) which opens into a bearing-accommodating space (13) in the cutter for delivering lubricating grease to the space (13), and wherein a lubricating nipple (19) is provided on the cutter end wall of largest diameter and functions to allow lubricating grease to be released from the bearing-accommodating space (13).
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 4, 2008
    Assignee: Atalas Copco Secoroc AB
    Inventors: Jonas Thuresson, Lars Holmgren
  • Patent number: 7389829
    Abstract: A method and apparatus for creating a reamed hole below the surface are disclosed. The reaming apparatus is arranged to be connected to one or more boring stems and has an interior section and an exterior section. The interior section is rotatable independently of the exterior section. Reamed holes of various cross-sections can be produced by appropriate selection of the cross-section of the exterior section.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: June 24, 2008
    Inventor: Theodore Roy Dimitroff
  • Patent number: 7325630
    Abstract: The invention relates to well reamer for borehole reaming within a specified interval. The well reamer has a housing with inclined slots, radial holes and a central straight-through channel, in which a spring-loaded rod with holes in the upper and lower parts is located. The upper holes of the rod are covered when the operating elements are extended into an operating position. A plurality of legs, including cutters rotatably supported on the legs, are moved by pistons between an operating position and a transport position along the inclined slots. Free-ends of the pistons may be connected to the rod by sliders, which are movable radially into openings in the rod to connect the rod to the pistons to move the rod with the legs.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: February 5, 2008
    Assignee: Otkrytoe Aktsionernoe Obschestvo “Tatneft” IM. V.D. Shashina
    Inventors: Shafagat Fakhrazovich Takhaundinov, Nail Gabdulbarievich Ibragimov, Khamit Zagirovich Kaveev, Gabdrashit Sultanovich Abdrakhmanov, Nigamatian Khamitovich Khamitianov, Ilgiz Kamaevich Kashapov, Ruslan Gabdrashitovich Abdrakhmanov
  • Patent number: 7048078
    Abstract: A downhole tool that functions as an underreamer or as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates between collapsed and expanded positions in response to differential fluid pressure between the flowbore and the wellbore annulus. In one embodiment, the tool moves automatically in response to differential pressure. In a second embodiment, the tool must be selectively actuated before it is moveable. The tool may include borehole engaging pads that comprise cutting structures or wear structures or both, depending upon the function of the tool.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: May 23, 2006
    Assignee: Smith International, Inc.
    Inventors: Charles H. Dewey, Wei Xu
  • Patent number: 6568488
    Abstract: A pipe bursting system of the invention operates by compaction rather than by reaming. The system includes a conventional directional boring machine, a drill string, and a pipe burster attached to the terminal end of the drill string. A pipe burster according to the invention includes a frame having a front connecting portion configured for connection to a drill string that can pull and rotate the frame about an axis of rotation, at least two axles mounted on the frame, and rollers mounted on each axle. Each roller has a curved outer surface forwardly inclined towards the axis of rotation of the frame, whereby rotation of the frame about its axis of rotation results in rotation of the rollers when the curved outer surfaces of the rollers engage a cylindrical inner surface of a pipe being burst.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: May 27, 2003
    Assignee: Earth Tool Company, L.L.C.
    Inventors: Steven W. Wentworth, Robert F. Crane, Paul W. Hau
  • Patent number: 6527066
    Abstract: A hole opener (10) having a tubular body (11) with threaded ends (12, 14) for connection in a drill string. The hole opener provides slots or grooves (21, 21′) along its longitudinal axis (16) into which are inserted cutter arm support members (30, 30′, 60, 60′) which may be screwed, (43) pinned (68) or bolted (168) to the body (11) to permit easy replacement of the support arms (30). The grooves (21, 21′) in the body (11) of the hole opener (10) also provide a spindle (20) spatially aligned with the groove (21, 21′) to support the proximal end of a rotatable journal body (28) supporting the cutter body (25) providing hard facing for grinding of the bore hole to be enlarged. The support arms (30) at their distal end provide further support for the cutter journals (70). The hole opener (10) also may provide pressure compensated lubrication mechanism (71) to provide grease to the bearing surfaces to increase their service life and thereby extend the useful life of the tool.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: March 4, 2003
    Inventor: Allen Kent Rives
  • Publication number: 20020088649
    Abstract: A hole opener for use in the Horizontal Directional Drilling (HDD) Industry is provided having an interchangeable sleeve reamer. The hole opener is in the form of a three-piece tool comprising a top shaft member, an interchangeable sleeve member and a bottom sub member, the interchangeable sleeve member being configured to be securely and removably mounted onto the top shaft member such that is does not rotate freely about the axis of the shaft member. In one embodiment, the bottom sub member also is interchangeable with other bottom sub members.
    Type: Application
    Filed: January 9, 2002
    Publication date: July 11, 2002
    Inventors: Donald G. Morris, David R. Morris
  • Patent number: 5992542
    Abstract: A hole opener for enlarging the diameter of bore holes, having a plurality of cantilevered spindles (6) for supporting rotatably attached cutter shells (9) having hardened surfaces for cutting and crushing to widen the bore hole. The cutter shells are supported on an inner threaded journal (13) which permits a plurality of load bearing rollers or bearings (26) to facilitate rotational movement of the cutter. The hole opener is provided on a tubular body which is connected in a drill string and which provides jetting nozzles (4) to remove the cutting debris and return it to the earth's surface. The cantilevered support spindle (6), journal (13) and cutter shell (9) assembly permit flexible interchange of cutter faces and sizes to be available for use with the same hole opener body and different directions of travel of the body.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: November 30, 1999
    Inventor: Allen Kent Rives
  • Patent number: 5372209
    Abstract: A polycentric reamer having a body thrust unit and reaming unit is especially useful for locally reaming a borehole beneath a casing string. By asymmetrically positioning a reaming unit within a body formed from non-coaxial mated cylinders, superior results are achieved. These results include minimizing wear on the casing string.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: December 13, 1994
    Assignee: DCD, Ltd.
    Inventors: Ludvig A. Raihert, Takov A. Edelman, Alexey G. Messer, Abeksandr N. Sorokin, Sergej P. Krivonenkov, Rudolf S. Alikin, Yaroslaw S. Gavrilov
  • Patent number: 5366029
    Abstract: A large shaft over-reamer apparatus and method using a driver means and a detachable reamer cutter means. The driver means may include a work platform for personnel to work on. The driver means is positioned in a drilled pilot hole for stability and vertical control. The top of the driver means is attached to a kelly bar that transmits rotational force to the driver. The driver means has lug pins to releasably connect the driver means to the reamer cutter means. Releasably connecting the driver means to the reamer cutter means allows the reamer cutter means to be left inside the shaft or hole while the kelly bar lifts out excavated material in a bucket attached to the driver means. The reamer cutter has radial cutters and wiper blades. The wiper blades help funnel the excavated materials to a bucket.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: November 22, 1994
    Inventor: August H. Beck, III
  • Patent number: 5337843
    Abstract: A hole opener used in conjunction with drilling in at least one of boulder and rubble stone formations includes first and second sets of cutters. Each of the cutters of the first and second sets of cutters has cutter teeth thereon and further include a shaft. The hole opener also includes a tubular carrier body, a first device for fixing the first set of cutters to the tubular carrier body so that the first set of cutters is positioned in a common first lateral plane with respect to a longitudinal axis of the tubular carrier body, and second device for fixing the second set of cutters to the tubular carrier body so that the second set of cutters is located in a second lateral plane with respect to the longitudinal axis of the tubular carrier body and at an axial distance from the first set of cutters along the longitudinal axis.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: August 16, 1994
    Assignee: Kverneland Klepp AS
    Inventors: Tor Torgrimsen, Kjell-Egil Stangeland, Arnold Furre
  • Patent number: 4627501
    Abstract: In a borer head for drilling boreholes in rock structures and including a drive shaft connected to a drive of a drilling machine, a central shaft coupled to the drive shaft, and a tool holder with cutters driven by a planetary gearing connected to the central shaft, supporting elements, engageable with a cylindrical wall of the borehole being drilled, are provided. The supporting elements are operatively connected to the central shaft and also to the tool holder so that the tool holder is driven into a slow rotation about the central shaft.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: December 9, 1986
    Assignee: Turmag-Turbo-Maschinen-Aktiengesellschaft Nuesse & Graefer
    Inventor: Wolfgang Ebeling
  • Patent number: 4449595
    Abstract: A reamer apparatus is adapted for use in combination with a radial whipstock assembly in drilling a curved bore in a subsurface formation at a predetermined angle of build. The reamer apparatus is comprised of a drill bit, at least one articulated joint or drill collar connected to the lower end of the drill string, and a stabilized reamer interconnected for rotation behind the drill bit which includes cutter blades overgauged in relation to the drill bit and projecting substantially in outward radial directions from the reamer body, each blade having an elongated cutting edge which extends substantially parallel to the direction of drilling and a stabilized leading end so as to stabilize the reamer and avoid preferential cutting as the drill bit proceeds along the desired course.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: May 22, 1984
    Inventor: Don R. Holbert
  • Patent number: 4433738
    Abstract: A method is disclosed of smoothing out a curved section of a well bore that has been drilled with a bent sub-downhole motor assembly. The method includes moving a reamer with a body having a cylindrical section and a lower tapered section equipped with a plurality of cylindrical cutters on each section through the curved section, while being rotated by the drilling assembly to be used to continue drilling the well bore below the curved section.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: February 28, 1984
    Inventor: Ernest W. Moreland
  • Patent number: 4386670
    Abstract: A boring head for reaming a pre-drilled hole in raise boring or for similar earth cutting operations comprising a plurality of roller cutters (13-22). For purposes of extending the radius of the boring head (10) in operation or decreasing its dimensions during transport one or several extension elements (36, 37) are provided for detachable attachment to the boring head (10) by means of a wedge connection (42).
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: June 7, 1983
    Assignee: Santrade Ltd.
    Inventor: Gustav L. Westermark
  • Patent number: 4381038
    Abstract: A bit connectible from the lower end of a rotatably powered drill stem for enlarging a preformed pilot hole includes a cutter carrier frame on which are mounted a plurality of roller cutters having peripheral cutting edges which sweep concentric circles upon rotation of the raise drilling bit. The circles swept by the cutters collectively define a generally dome-shaped cutting profile of constantly changing curvature which forms a segment of a spiral curve so that as the cutting profile extends radially outwardly from the drill stem, its curvature progressively decreases. The rotating cutter carrier frame structure drives a flywheel assembly at increased speed through the intermediacy of a step-up drive system composed of two planetary gear drives coupled in tandem.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: April 26, 1983
    Assignee: The Robbins Company
    Inventor: David B. Sugden
  • Patent number: 4359114
    Abstract: A raise bit (10) is constructed with a plurality of housings (30) secured to cutter carrier frame (14) and disposed about drive stem (12). Housings (30) include a rectangularly-shaped mounting box (48) for rotatably supporting an outboard roller cutter (28). Each housing (30) also includes an upright wall (34) having an upwardly tapered lug (40) extending along the upper edge portion thereof for seating within a correspondingly shaped groove (82) formed along the underside of shoulder section (78) of an L-shaped hanger bracket (68). A roller shell (72) is antifrictionally mounted on a spindle (70) extending outwardly from an upright section (76) of hanger bracket (68). Bracket (68) is held in hooked relationship over lug (40) by a pair of capscrews (74) extending downwardly through clearance holes formed in upright section (76) and engaging within a lower portion of upright wall (34).
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: November 16, 1982
    Assignee: Robbins Machine, Inc.
    Inventors: James D. Miller, Worm Lund, Donald W. Jones