Cutter Element Shifted By Fluid Pressure Patents (Class 175/267)
  • Patent number: 9784048
    Abstract: A stabilizer design for improving the likelihood of recovery of a drill string when obstructions are encountered in a wellbore is disclosed herein. The stabilizer includes a tubular body, a track, and a stabilizer blade. The track is disposed along the tubular body. The stabilizer blade is operatively coupled to the track and is configured to slide along the track from a first position to a second position.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: October 10, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Mark C. Moyer, Paul E. Pastusek, Eileen Louvier
  • Patent number: 9739094
    Abstract: A downhole tool configured to enlarge a borehole may include at least one blade extending laterally from a central portion of the tool. The one or more blades may each include a gage portion, and cutting elements comprising substantially circular cutting faces may be affixed to each of the one or more blades. Each of the one or more cutting elements may include a cutting edge comprising an arcuate peripheral cutting face portion for contacting the borehole. Cutting faces of at least one cutting element on a gage portion of the at least one blade may exhibit a cutting face back rake angle greater than a cutting face back rake angle of cutting elements on at least one other portion of the at least one blade.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: August 22, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Mario Moreno, II, James D. Enterline
  • Patent number: 9677382
    Abstract: A tool control mechanism is configured to activate and deactivate a drill string tool by hydraulic action of drilling fluid. The tool control mechanism is switchable between an activation mode and a deactivation mode. In the activation mode, a hydraulic activator ram is coupled to a tool switch member to drive the switch member in an activation direction in response to above-threshold drilling fluid conditions. In the deactivation mode, a deactivator ram is coupled to the tool switch member to drive the switch member in a deactivation direction opposite to the activation direction, when above-threshold drilling fluid conditions occur. The tool control mechanism is switchable between the activation mode and the deactivation mode by operator-controlled drilling fluid pressure variations.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 13, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Olivier Mageren
  • Patent number: 9631434
    Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer may include a body with first and second cutter blocks coupled to the body. The first cutter block may have a recess formed therein, and the second cutter block may be positioned in the recess. The first and second cutter blocks may move between retracted and expanded states. In the retracted state, the first and second cutter blocks may have an outer diameter less than or equal to an outer diameter of the body. In the expanded state, the first and second cutter blocks may have different outer diameters, with each being greater than the outer diameter of the body. A method may include running the underreamer into a wellbore, expanding the first and second cutter blocks, and moving the underreamer axially in the wellbore to increase the diameter of the wellbore.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: April 25, 2017
    Assignee: SMITH INTERNATIONAL, INC.
    Inventor: Jefferson Allen Davis
  • Patent number: 9624727
    Abstract: A method, device, and system is described herein for pushing a rotary drill bit. Pushing the rotary drill bit can include receiving a target direction in a formation to push the rotary drill bit while drilling a wellbore in a formation. Pushing the rotary drill bit can also include opening, at a first rotational position of a rotary bit pushing device disposed proximate to the rotary drill bit within the wellbore, a first inlet port of a first flow regulator. Pushing the rotary drill bit can further include closing, after the first rotational position of the rotary bit pushing device, the first inlet port. Pushing the rotary drill bit can also include sending, to a second flow regulator of the rotary bit pushing device, a second quantity of drilling fluid.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 18, 2017
    Assignee: D-TECH (UK) LTD.
    Inventor: Richard Hutton
  • Patent number: 9611697
    Abstract: An expandable reamer apparatus and methods for reaming a borehole, wherein a laterally movable blade carried by a tubular body may be selectively positioned at an inward position and an expanded position. The laterally movable blade, held inwardly by blade-biasing elements, may be forced outwardly by drilling fluid selectively allowed to communicate therewith by way of an actuation sleeve disposed within the tubular body. Alternatively, a separation element may transmit force or pressure from the drilling fluid to the movable blade. Further, a chamber in communication with the movable blade may be pressurized by way of a downhole turbine or pump. A ridged seal wiper, compensator, movable bearing pad, fixed bearing pad preceding the movable blade, or adjustable spacer element to alter expanded blade position may be included within the expandable reamer. In addition, a drilling fluid pressure response indicating an operational characteristic of the expandable reamer may be generated.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: April 4, 2017
    Assignee: Baker Hughes Oilfield Operations, Inc.
    Inventors: Steven R. Radford, Anurag Gautam, Robert A. Laing
  • Patent number: 9556692
    Abstract: A tool for boring holes in soil includes an elongated tubular housing which has disposed through its length a bore having an upper opening coupleable to a vacuum source and a lower opening coupled to the bore of a ring-shaped bore head having circumferentially spaced apart cutting teeth protruding downwards from the bore head. A zig-zag shaped unclogger bar disposed coaxially through the bore head and rotated by a drive shaft disposed coaxially through the tubular and housing and protruding through a bearing in an upper end of the housing and driven by a rotary power source such as an electric motor fixed to the housing fragments lumps of clay or wet soil lodged in the bore of the housing, facilitating removal of soil and clay, which are severed by twisting the tool around its longitudinal axis by manipulating handle bars protruding from the upper end of the housing.
    Type: Grant
    Filed: July 12, 2014
    Date of Patent: January 31, 2017
    Assignee: CORBAS MARKETING, INC.
    Inventors: Carlos J. Cordova, Sammy Vargas
  • Patent number: 9051792
    Abstract: A method for conducting a wellbore operation includes disconnecting a radially projecting member from a first sub without uncoupling a second sub from the first sub. The method may include also coupling the first sub to the second sub with a connector that includes an electrical connection. An associated apparatus may include a sub having at least one conductor connected to a connector; and at least one radially projecting member removably coupled to the sub.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: June 9, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Wolfgang E. Herberg, Ines Gruetzmann
  • Patent number: 9038748
    Abstract: Expandable apparatus for use in subterranean boreholes include at least one member configured to move between a retracted position and an extended position. A latching member disposed in the tubular body may selectively retain the at least one member in the retracted position. Methods of operating an expandable apparatus include securing at least one member of the expandable apparatus in a retracted position by engaging an inner wall of a tubular body with at least one latch member disposed in at least one aperture formed in a latch sleeve.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: May 26, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Khoi Q. Trinh, S. Richard Gentry
  • Patent number: 9038749
    Abstract: Expandable apparatus for use in subterranean boreholes include at least one member configured to move between a retracted position and an extended position. Components of the expandable apparatus may include at least one surface for removing debris proximate to the tubular body. Components of the expandable apparatus may be configured to enable the expandable apparatus to increase a diameter of a subterranean borehole by greater than twenty percent. Components of the expandable apparatus may be configured to restrict fluid flow to nozzle assemblies. The expandable apparatus may include a protect sleeve having a push sleeve disposed therein. Methods of operating an expandable apparatus may include removing debris with a surface of the expandable apparatus. Methods of operating an expandable apparatus may also include selectively flowing fluid to nozzle assemblies.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 26, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Khoi Q. Trinh, Li Li
  • Publication number: 20150122550
    Abstract: The present invention is a subsurface formation cutter for directional cutting into a subterranean formation. The subsurface formation cutter includes a transmission unit, a cutter bit, a bit brace, and a ram unit. The transmission unit has a driver shaft operatively connected to a bottom hole assembly. The cutter bit has a connector member, a cutter body rotatably coupled to the connector member, and a bit shaft connected to the cutter body. The bit shaft is operatively coupled to the driver shaft of the transmission unit. The ram unit has a moveable ram shaft connected to a traveling member. The bit brace is pivotably connected to the connector member and the traveling member. A connection member is attaches the ram unit to the transmission unit, and is configured to receive and guide the traveling member to travel in a direction parallel with a longitudinal axis of the subsurface formation cutter.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventor: Bernard Compton Chung
  • Publication number: 20150075812
    Abstract: An under-reamer comprises a body and extendable cutters mounted on the body. The under-reamer is configured to be cycled between a first configuration in which the cutters are retracted and a second configuration in which the cutters are movable between retracted and extended positions. A control mechanism is provided and is configurable to prevent the under-reamer cycling between the first and second configurations and thus maintain the under-reamer in a selected one of the first and second configurations.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 19, 2015
    Inventor: Mark Adam
  • Patent number: 8967300
    Abstract: A downhole tool includes a pressure activated flow switch for selectively actuating and deactuating a device, such as a reaming block. The flow switch is deployed external to the flow bore and includes a flow piston configured to reciprocate between axially opposed open and closed positions such that the device is actuated when the flow piston is in the open position and deactuated when the flow piston is in the closed position. The flow piston is configured to translate from the closed position to the open position when a differential pressure exceeds a predetermined threshold. The flow piston may be further configured to remain in the open position at differential pressures less than the threshold.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: March 3, 2015
    Assignee: Smith International, Inc.
    Inventors: Charles H Dewey, John E. Campbell, Daniel LeVon
  • Publication number: 20150008043
    Abstract: A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston-actuating fluid into fluid channels leading to respective pistons. The control system controls the fluid-metering assembly to allow fluid flow to selected pistons, causing the actuated pistons to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. The apparatus may incorporate a fluid filter module mounted to the control system. The pistons may incorporate auxiliary cutting elements to provide near-bit reaming capability.
    Type: Application
    Filed: September 24, 2014
    Publication date: January 8, 2015
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Jeffery Ronald Clausen, Jonathan Ryan Prill
  • Publication number: 20140374163
    Abstract: A downhole tool includes a body having a bore extending, at least partially therethrough. A component is disposed within the bore and arranged and designed to move axially from a first position to a second position within the bore. An axial end portion of the component has a first contact surface that is oriented at an angle from about 1° to about 45° with respect to a longitudinal axis extending through the component.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 25, 2014
    Inventors: Rui Gao, Sudarsanam Chellappa, James Layne Larsen
  • Publication number: 20140353032
    Abstract: An expandable reamer apparatus and methods for reaming a borehole, wherein a laterally movable blade carried by a tubular body may be selectively positioned at an inward position and an expanded position. The laterally movable blade, held inwardly by blade-biasing elements, may be forced outwardly by drilling fluid selectively allowed to communicate therewith by way of an actuation sleeve disposed within the tubular body. Alternatively, a separation element may transmit force or pressure from the drilling fluid to the movable blade. Further, a chamber in communication with the movable blade may be pressurized by way of a downhole turbine or pump. A ridged seal wiper, compensator, movable bearing pad, fixed bearing pad preceding the movable blade, or adjustable spacer element to alter expanded blade position may be included within the expandable reamer. In addition, a drilling fluid pressure response indicating an operational characteristic of the expandable reamer may be generated.
    Type: Application
    Filed: August 20, 2014
    Publication date: December 4, 2014
    Inventors: Steven R. Radford, Anurag Gautam, Robert A. Laing
  • Patent number: 8893826
    Abstract: A drilling apparatus includes a tubular body including an upper connection and a lower connection with a drill bit disposed thereon, and an axial borehole therethrough, wherein the upper connection is configured to attach to a drillstring, primary cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom. The drilling apparatus further includes backup cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom, and an activation system configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 25, 2014
    Assignee: Smith International, Inc.
    Inventor: Praful C. Desai
  • Publication number: 20140262511
    Abstract: In one aspect, a drill bit is disclosed that in one embodiment includes a plurality of elements that extend and retract from a surface of the drill bit, wherein the plurality of such elements are in fluid communication with each other to compensate for differing forces applied to such elements during drilling operations. 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 plurality of elements that extend and retract from a surface of the drill bit, wherein the plurality of such elements are in fluid communication with each other to compensate for differing forces applied to such elements during drilling operations; and drilling the wellbore using the drill string.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Juan Miguel Bilen
  • Publication number: 20140262525
    Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer may include a body having an axial bore extending at least partially therethrough. An electromagnetic activation system may be disposed at least partially within the bore of the body. A valve may be disposed within the bore of the body and coupled to the electromagnetic activation system. The valve may include a mobile element and a static element. The mobile element may be coupled to the electromagnetic activation system and move from a first position where the mobile element obstructs fluid flow through the valve to a second position where the mobile element permits fluid flow through the valve. A cutter block may be movably coupled to the body and move radially-outward as the mobile element moves from the first position to the second position.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Nathan Fuller, Craig Boswell, Jacques Orban, Jonathan Marshall, Jordan Englund
  • Patent number: 8820439
    Abstract: Expandable apparatus for use in subterranean boreholes include at least one member configured to move between a retracted position and an extended position. Components of the expandable apparatus may include at least one surface for removing debris proximate to the tubular body. Components of the expandable apparatus may be configured to enable the expandable apparatus to increase a diameter of a subterranean borehole by greater than twenty percent. Components of the expandable apparatus may be configured to restrict fluid flow to nozzle assemblies. The expandable apparatus may include a protect sleeve having a push sleeve disposed therein. Methods of operating an expandable apparatus may include removing debris with a surface of the expandable apparatus. Methods of operating an expandable apparatus may also include selectively flowing fluid to nozzle assemblies.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: September 2, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Khoi Q. Trinh, Li Li
  • Patent number: 8813871
    Abstract: An expandable reamer apparatus and methods for reaming a borehole, wherein a laterally movable blade carried by a tubular body may be selectively positioned at an inward position and an expanded position. The laterally movable blade, held inwardly by blade-biasing elements, may be forced outwardly by drilling fluid selectively allowed to communicate therewith by way of an actuation sleeve disposed within the tubular body. Alternatively, a separation element may transmit force or pressure from the drilling fluid to the movable blade. Further, a chamber in communication with the movable blade may be pressurized by way of a downhole turbine or pump. A ridged seal wiper, compensator, movable bearing pad, fixed bearing pad preceding the movable blade, or adjustable spacer element to alter expanded blade position may be included within the expandable reamer. In addition, a drilling fluid pressure response indicating an operational characteristic of the expandable reamer may be generated.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: August 26, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Anurag Gautam, Robert A. Laing
  • Patent number: 8770321
    Abstract: A cutting structure for use with a reamer in enlarging a borehole in a subterranean formation includes a plurality of cutter blocks, radially extendable from a reamer body away from a central axis of the reamer body, each of the plurality of cutter blocks comprising at least one cutter blade thereon, wherein an angular spacing about the central axis of the reamer body between the at least one cutter blade on each of the plurality of cutter blocks is unequal.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: July 8, 2014
    Assignee: Smith International, Inc.
    Inventors: Navish Makkar, Tommy G. Ray, Manoj Mahajan, Dwayne P. Terracina, Sameer Bhoite
  • Patent number: 8746371
    Abstract: Expandable reamers for enlarging wellbores include a tubular body and one or more blades configured to extend and retract. A sleeve member within the tubular body has open ends to allow fluid to flow therethrough. A fluid port extends through a wall of the sleeve member. A restriction member within the sleeve is movable between first and second positions. In the first position, fluid flow through the downhole end of the sleeve is generally unimpeded, and fluid flow through the fluid port is generally impeded. In the second position, fluid flow through the downhole end of the sleeve member is generally impeded, and fluid flow through the fluid port is generally unimpeded. The restriction member may be configured to move responsive to changes in the rate of fluid flow through the sleeve member. Methods of using such reamers are also disclosed.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: June 10, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Steven Richard Gentry
  • Publication number: 20140131108
    Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer includes a body having an axial bore extending at least partially therethrough. A sleeve is arranged and designed to move a first axial distance within the body. A cutter block is movably coupled to the body. The cutter block is arranged and designed to move at least the first axial distance with respect to the body to contact the sleeve in response to hydraulic pressure in the bore. The cutter block moves from a first outer diameter to a second outer diameter as the cutter block moves the first axial distance.
    Type: Application
    Filed: March 12, 2013
    Publication date: May 15, 2014
    Applicant: Schlumberger Technology Corporation
    Inventor: Jianbing Hu
  • Patent number: 8640794
    Abstract: A pressurized fluid flow system for a normal circulation down-the-hole hammer comprises a cylinder coaxially disposed in between an outer casing and a piston which reciprocates due to changes in pressure of pressurized fluid contained inside a front chamber and rear chamber located at opposites sides of the piston, supply/discharge of fluid to/from these chambers being conducted through a supply chamber and a discharge chamber defined by recesses on the inner surface of the casing and separated by a dividing wall, the front/rear chambers' in/out fluid flow being controlled solely by the overlap of the piston and the cylinder. A hammer having this system comprises a drill bit with one or more flushing passages which extend from channels cooperatively formed between splines on the inner surface of the driver sub and on the outer surface of the drill bit shank up to the front face of the drill bit.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: February 4, 2014
    Assignee: Drillco Tools S.A.
    Inventor: Jaime Andrés Aros
  • Publication number: 20140014315
    Abstract: The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly pivotally mounted about a pivot point fixed in relation to the tool housing and movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly for moving the arm assembly between the retracted position and the projecting position, the arm activation assembly being arranged inside the tool housing and having a first end face and a second end face adapted for being connected with the end faces of other arm activation assemblies; wherein the arm activation assembly comprises: a piston housing having a piston chamber extending in the longitudinal direction of the downhole tool and comprising: a first piston housing part, a second piston housing part removably connected to the first piston housing part, a piston member arranged inside the piston housing and connected with the arm assembly, the piston member being movable in th
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: Welltec A/S
    Inventor: Jørgen Hallundbæk
  • Patent number: 8608411
    Abstract: Device (1) for consolidating soils by mechanical mixing and injection of consolidating fluids is designed to be connected to one or more drilling rods and to carry out operations of drilling and mixing. The device has a main body (10), one or more blades (30) (30?) (30?), which are mobile with respect to the body (10) and are constrained by cams (22) to a central structure (20) internal to the body (10). The device (1) has channels for the flow of fluids (40), which are connected in a liquid-tight way to at least one sprayer; a relative motion is generated between the central structure (20) and the external body (10) as a function of the pressure of a liquid introduced into the channels for the flow of fluids (40), which brings about opening of the blades (30) (30?) (30?).
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: December 17, 2013
    Assignee: Soilmec S.p.A.
    Inventor: Ezio Biserna
  • Publication number: 20130299245
    Abstract: Expandable reamers for enlarging wellbores include a tubular body and one or more blades configured to extend and retract. A sleeve member within the tubular body has open ends to allow fluid to flow therethrough. A fluid port extends through a wall of the sleeve member. A restriction member within the sleeve is movable between first and second positions. In the first position, fluid flow through the downhole end of the sleeve is generally unimpeded, and fluid flow through the fluid port is generally impeded. In the second position, fluid flow through the downhole end of the sleeve member is generally impeded, and fluid flow through the fluid port is generally unimpeded. The restriction member may be configured to move responsive to changes in the rate of fluid flow through the sleeve member. Methods of using such reamers are also disclosed.
    Type: Application
    Filed: July 15, 2013
    Publication date: November 14, 2013
    Inventor: Steven Richard Gentry
  • Publication number: 20130299248
    Abstract: An underreamer for connection with a rotary pipe string includes inner and outer body sections which form a body structure to provide a fluid flow path therethrough for communicating with piston and cylinder means formed between the body sections for receiving drilling fluid to effect telescopic movement between the body sections permitting engagement of cutter arms and support of said cutter arms on the outer body of the underreamer. Cutter arms are pivotally mounted on the inner body section and, upon engagement of the cutter arms to effect underreaming are fully supported on the outer body section thereby minimizing damage from vibration and repeated use on the threaded inner body sections.
    Type: Application
    Filed: February 24, 2011
    Publication date: November 14, 2013
    Applicant: Tiger 19 Partners, Ltd
    Inventor: Allen Kent Rives
  • Publication number: 20130292175
    Abstract: A drilling assembly for drilling a subterranean wellbore includes an expandable reamer and an expandable stabilizer. The expandable reamer and the expandable stabilizer each have a tubular body with a longitudinal axis and a drilling fluid flow path extending therethrough. A plurality of blades is carried by the reamer and a plurality of bearing pads is carried by the stabilizer. The blades and bearing pads are outwardly movable from a retracted position to an extended position with respect to the longitudinal axes of the reamer and stabilizer, respectively. The reamer and stabilizer each include an actuation device for moving the blades and bearing pads, respectively, from the retracted position to the extended position.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 7, 2013
    Inventors: Steven R. Radford, L. Allen Sinor, Anders K. Nesheim
  • Publication number: 20130264122
    Abstract: Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position. In some embodiments, the tools may include a formation-engaging surface comprising a gage area. In other embodiments, the tools may include a radially recessed area extending from a back edge of the formation-engaging surface. Methods for removing such expandable reamer tools from a borehole are also disclosed.
    Type: Application
    Filed: June 4, 2013
    Publication date: October 10, 2013
    Inventors: Steven R. Radford, Scott Shiqiang Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar, Anton F. Zahradnik
  • Patent number: 8550188
    Abstract: A cutting structure for use with a reamer in enlarging a borehole in a subterranean formation includes a plurality of cutter blocks, radially extendable from a reamer body away from a central axis of the reamer body, each of the plurality of cutter blocks comprising at least one cutter blade thereon, wherein an angular spacing about the central axis of the reamer body between the at least one cutter blade on each of the plurality of cutter blocks is unequal.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 8, 2013
    Assignee: Smith International, Inc.
    Inventors: Navish Makkar, Tommy G. Ray, Manoj Mahajan, Dwayne P. Terracina, Sameer Bhoite
  • Publication number: 20130248252
    Abstract: An articulated reaming tool is provided in casing or liner drilling on or through the tubular wall with the articulation occurring from within the tubular. Outer limit travel stops are contemplated to optionally be used to retain the elements or blades to the tubular. In the case of liner drilling the drill string has an exterior protrusion to engage the movable components that ream and extend them to increase the clearance for the tubular as the tubular advances when more hole is made.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 26, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Marcus Oesterberg, Steve Rosenblatt
  • Patent number: 8485282
    Abstract: Expandable reamers for enlarging wellbores include a tubular body and one or more blades configured to extend and retract. A sleeve member within the tubular body has open ends to allow fluid to flow therethrough. A fluid port extends through a wall of the sleeve member. A restriction member within the sleeve is movable between first and second positions. In the first position, fluid flow through the downhole end of the sleeve is generally unimpeded, and fluid flow through the fluid port is generally impeded. In the second position, fluid flow through the downhole end of the sleeve member is generally impeded, and fluid flow through the fluid port is generally unimpeded. The restriction member may be configured to move responsive to changes in the rate of fluid flow through the sleeve member. Methods of using such reamers are also disclosed.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 16, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Steven Richard Gentry
  • Publication number: 20130168076
    Abstract: A milling tool for enlarging portions of a wellbore. The milling tool includes a housing that defines a central bore along its length. A piston is moveably disposed within the central bore, and axial movement of the piston moves support arms radially outwardly from the housing. The support arms carry milling blades for enlarging portions of a wellbore.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Applicant: Baker Hughes Incorporated
    Inventor: John P. Davis
  • Publication number: 20130161102
    Abstract: A drill bit for use in drilling a wellbore and that can be used for fracturing the subterranean formation surrounding the wellbore. Included on the bit body is a packer for sealing against the wellbore wall during fracturing. A chamber in the drill bit houses a valve assembly for selectively diverting fluid between use in drilling and for use in fracturing. The fluid is delivered through a drill string that attaches to an upper end of the bit. The valve assembly can be shuttled between drilling and fracturing configurations by selectively adjusting an amount and/or pressure of the fluid flowing in the drill string.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 27, 2013
    Applicant: Saudi Arabian Oil Company
    Inventor: Saudi Arabian Oil Company
  • Patent number: 8443875
    Abstract: A down hole tool includes a tool body, a fluid cavity, a magnetorheological fluid disposed in the fluid cavity, and an electrical control unit in communication with the MR fluid. The electrical control unit is configured to adjust a viscosity of the MR fluid by varying a magnetic field.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: May 21, 2013
    Assignee: Smith International, Inc.
    Inventor: Arley G. Lee
  • Publication number: 20130118812
    Abstract: A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston-actuating fluid into fluid channels leading to respective pistons. The control system controls the fluid-metering assembly to allow fluid flow to selected pistons, causing the actuated pistons to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. The apparatus may incorporate a fluid filter module mounted to the control system. The pistons may incorporate auxiliary cutting elements to provide near-bit reaming capability.
    Type: Application
    Filed: January 3, 2013
    Publication date: May 16, 2013
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventor: NATIONAL OILWELL VARCO, L.P.
  • Publication number: 20130087386
    Abstract: An expandable reamer apparatus and methods for reaming a borehole, wherein a laterally movable blade carried by a tubular body may be selectively positioned at an inward position and an expanded position. The laterally movable blade, held inwardly by blade-biasing elements, may be forced outwardly by drilling fluid selectively allowed to communicate therewith by way of an actuation sleeve disposed within the tubular body. Alternatively, a separation element may transmit force or pressure from the drilling fluid to the movable blade. Further, a chamber in communication with the movable blade may be pressurized by way of a downhole turbine or pump. A ridged seal wiper, compensator, movable bearing pad, fixed bearing pad preceding the movable blade, or adjustable spacer element to alter expanded blade position may be included within the expandable reamer. In addition, a drilling fluid pressure response indicating an operational characteristic of the expandable reamer may be generated.
    Type: Application
    Filed: July 9, 2012
    Publication date: April 11, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Steven R. Radford, Kelly D. Ireland, Anurag Gautam, Robert A. Laing, Matthew D. Mumma, Daryl L. Pritchard
  • Patent number: 8371400
    Abstract: A downhole tool string component has at least one end adapted to connect to an adjacent tool sting component and a bore adapted to accommodate a flow of drilling fluid. A turbine is disposed within the bore and an actuating assembly is arranged such that a clutch may mechanically connect and disconnect with the turbine.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: February 12, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8365842
    Abstract: A tool comprising a fluid path defined by a bore formed within a tubular body includes a guided sleeve and a reciprocating sleeve disposed within the bore. A gearwheel is located on an outer surface of the guided sleeve and at least one pawl located on an inner surface of the reciprocating sleeve. When the reciprocating sleeve translates axially, it rotates in a first direction. As the reciprocating sleeve rotates, the at least one pawl pushes the gearwheel and causes the guided sleeve to rotate in the first direction into a new position.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: February 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8327954
    Abstract: A tubular body with an axial bore includes an upper connection attached to a drillstring and a lower connection with a drill bit disposed thereon. Primary and backup cutter blocks are coupled to the tubular body and configured to selectively expand radially therefrom. An activation system within the tubular body is configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: December 11, 2012
    Assignee: Smith International, Inc.
    Inventor: Praful C. Desai
  • Publication number: 20120298423
    Abstract: Various embodiments of an expandable downhole tool for use in drilling of a wellbore are disclosed. The expandable tools disclosed herein may be used as an underreamer to enlarge a borehole, or may be used to stabilize a drilling system in a previously underreamed borehole or in a borehole that is being underreamed while drilling progresses. The various embodiments of the expandable tools disclosed herein have a higher hydraulic capacity than prior art underreamers. An increase in hydraulic energy delivered to the cutting structures may advantageously improve the rate of removal of cuttings from the cutting structures (improved cuttings evacuation), may decrease cutter element wear, and may prevent damage or premature failure. Improved cuttings evacuation may also provide for improved cutting action and increased penetration rates.
    Type: Application
    Filed: May 26, 2011
    Publication date: November 29, 2012
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Brian Cruickshank, Manoj Mahajan, Navish Makkar, Sameer Bhoite, Charles Dewey
  • Patent number: 8276690
    Abstract: An expandable downhole tool such as an under-reamer or a stabiliser includes a mandrel mounted for linear slidable movement relative to a main body. The mandrel, together with one or more travel blocks, cause movement of a working component in an axial direction. One or more outwardly extending guide paths slidably interact with the working component to cause the working component to move between a withdrawn inoperative position and an outwardly deployed operative position. Upon increase of hydraulic pressure from below the tool, the mandrel is urged against a spring biasing the deactivated position to move axially and cause the working component to take its operative position. Upon decrease of hydraulic pressure, the spring moves the mandrel axially to cause the working component to take its withdrawn inoperative position.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: October 2, 2012
    Inventor: Paul Bernard Lee
  • Patent number: 8230951
    Abstract: An expandable apparatus for use in a borehole includes a tubular body having at least one opening extending between a longitudinal bore of the tubular body and an outer surface of the tubular body and at least one member positioned within the at least one opening of the tubular body. The at least one member is configured to move between a retracted position and an extended position. An actuation structure is positioned within the tubular body. The actuation structure is coupled to the at least one member and is configured to move the at least one member from the retracted position to the extended position responsive to a flow rate of drilling fluid passing through the longitudinal bore.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: July 31, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Steven R. Radford, Khoi Q. Trinh, Li Li, Mark E. Anderson
  • Patent number: 8141657
    Abstract: The present invention provides a directional drilling apparatus and method for use in drilling bore holes. The apparatus comprises a plurality of movably mounted cutting elements, wherein the cutting elements are movable between radially retracted and extended cutting positions. A rotary valve is provided for synchronizing the movement of the cutting elements between their respective extended and retracted positions. Control of the directional drilling system is affected by synchronized movement of the cutting elements from an inner to an outer radial position in accordance with the angular position of the drill bit. Means are provided for directing high pressure cutting fluid to the region between the cutting elements and the rotatable body to prevent the accumulation of debris that could prevent movement of the cutting elements. The cutting elements enlarge the bore hole formed by the drill bit, so that the cutting elements continuously engage the wall of the bore hole.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: March 27, 2012
    Assignee: Merciria Limited
    Inventor: Richard Hutton
  • Publication number: 20120061148
    Abstract: A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston actuating fluid into fluid channels in the drill bit leading to respective pistons. The control system controls the fluid-metering assembly to selectively allow fluid flow through the fluid channels to the pistons and to exit through orifices in the fluid channels. The selective fluid flow causes the actuated piston to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 15, 2012
    Applicant: National Oilwell Varco, L.P.
    Inventors: Jeffery CLAUSEN, Jonathan Ryan Prill
  • Publication number: 20120031673
    Abstract: A downhole tool comprises a body, an extendable cutting member operable to cooperate with a hydraulically actuated cam member, and a cam member lock. The lock is configurable to be activated downhole to restrict movement of the cam member relative to the body and prevent extension of the cutting member.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 9, 2012
    Applicant: NOV DOWNHOLE EURASIA LIMITED
    Inventor: Alan MacKenzie
  • Patent number: 8104549
    Abstract: An activating device is mounted in a drill string to control the activation and deactivation of an enlargement tool used for enlarging a bore hole. In order to assemble the activating device, pistons are mounted in passages and spline bars, in which plates are screwed, are then slid along T-slots of the body, through apertures of the pistons. In order to deploy the pistons and cutters, pressurized drilling fluid is applied to the inner faces of the pistons. When a pre-determined pressure level is reached, screws break and the pistons move from the inward position to the outwardly deployed position.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: January 31, 2012
    Inventor: Paul Bernard Lee
  • Publication number: 20110266060
    Abstract: Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a refracted position and an expanded position in a direction oriented at an acute angle of less than ninety degrees (90°) to a longitudinal axis of the outer body. In some embodiments, the tools may include a moveable inner sleeve member configured to selectively allow hydraulic fluid pressure within the fluid passageway to act directly on the at least one blade. Methods for enlarging a borehole using such expandable reamer tools and methods for removing such expandable reamer tools from a borehole are also disclosed.
    Type: Application
    Filed: July 13, 2011
    Publication date: November 3, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Steven R. Radford, Scott S. Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar, Anton F. Zahradnik