Below-ground (1) Hammer, Or (2) Impact Members Patents (Class 175/293)
  • Patent number: 9366370
    Abstract: A coupling device for piping including a duct; a coupling with a hermetic longitudinal sliding connection with an extremity of the duct along a total distance parallel to a longitudinal axis of the duct; a device to stop the translational movement of a first extremity of the duct in the coupling for a travel distance less than the total distance. The device being withdrawable for a defined compression condition of the duct.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: June 14, 2016
    Assignee: AIRBUS OPERATIONS S.A.S.
    Inventors: Alexis Courpet, Thomas Barre, Olivier Bourbon, Matthieu Biteau, Jean-Marc Roques, Cedric Sable, Sebastien Escande
  • Patent number: 9016404
    Abstract: The invention relates to a ram boring device for creating horizontal boreholes, having an impact piston which moves in an oscillatory manner within a casing of the ram boring device and of which the impact frequency or impact intensity can be varied by displacing the center position of the impact piston inside the casing.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 28, 2015
    Assignee: TRACTO-TECHNIK GmbH & Co. KG
    Inventor: Franz-Josef Püttmann
  • Patent number: 8973681
    Abstract: A pressurized fluid flow system for a reverse circulation down-the-hole hammer includes a cylinder and a cylindrical control tube that are respectively coaxially disposed in between the outer casing and the piston of the hammer and in between the piston and the sample tube. Two chambers help to respectively supply and discharge pressurized fluid into and out of the front and rear chambers that exert work on the piston: an internal chamber, defined by a central recess in the inner surfaces of the piston and permanently connected to the source of pressurized fluid, and a discharge chamber, defined by one or more recesses in the inner surface of the outer casing and permanently communicated with the bottom of the hole. A hammer provided with this system has one or more end discharge ports connected to respective longitudinal discharge channels formed on the outer surface of the outer casing.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: March 10, 2015
    Assignee: Drillco Tools S.A.
    Inventor: Jaime Andrés Aros
  • Patent number: 8931389
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: January 13, 2015
    Inventors: James E. Brooks, Nolan C. Lerche
  • Patent number: 8915314
    Abstract: A down-the-hole drill hammer is provided that includes a housing, a piston mounted within the housing, a drill bit mounted below the housing, and a drive coupling operatively engaged with the housing and drill bit. The drive coupling can be configured with a plurality of lugs circumferentially disposed about the drill bit and coupled with the casing for providing rotation thereof. Alternatively, the drive coupling can be configured with segmented lugs configured to circumscribe the drill bit, or as a cylindrical chuck formed out of arch-shaped chuck segments which radially assemble onto the shank of the drill bit.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: December 23, 2014
    Assignee: Center Rock Inc.
    Inventor: Leland H. Lyon
  • Patent number: 8893827
    Abstract: A drilling apparatus including a hydraulically powered hammer having a piston to impact a drill bit; a shuttle valve to control reciprocation of the piston; and an accumulator for hydraulic fluid; at least one drill rod having a first connection valve for connection of the drill rod to the connection valve of the hammer; and a second connection valve for connection of the drill rod to the first connection valve of a like drill rod or to a rotation device. The piston and shuttle valve are positioned substantially in-line to the axis of movement of the hammer. The accumulator is positioned proximate to the shuttle valve; and the first connection valve, and second connection valve having at least one poppet valve positioned proximate to a corresponding valve seat.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: November 25, 2014
    Assignee: JFK Equipment Limited
    Inventor: John Kosovich
  • Publication number: 20140338978
    Abstract: A percussion adapter that is driven to generate a percussive axial motion on a wellbore structure. One percussion adapter includes a drive connection to mechanically convert rotational drive to axially directed percussive motion. Another percussion adapter employs a valve that creates back pressure causing axially directed percussive motion. A wellbore tubular connection is also disclosed that transitions torque to resist back off when left hand or right hand torque is applied.
    Type: Application
    Filed: April 15, 2014
    Publication date: November 20, 2014
    Applicant: NOV WORLDWIDE C.V.
    Inventor: Bradley R. COTE
  • Patent number: 8887835
    Abstract: A drilling apparatus including a hydraulically powered hammer having a piston to impact a drill bit; a shuttle valve to control reciprocation of the piston; and an accumulator for hydraulic fluid; at least one drill rod having a first connection valve for connection of the drill rod to the connection valve of the hammer; and a second connection valve for connection of the drill rod to the first connection valve of a like drill rod or to a rotation device. The piston and shuttle valve are positioned substantially in-line to the axis of movement of the hammer. The accumulator is positioned proximate to the shuttle valve; and the first connection valve, and second connection valve having at least one poppet valve positioned proximate to a corresponding valve seat.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 18, 2014
    Assignee: JFK Equipment Limited
    Inventor: John Kosovich
  • Publication number: 20140332278
    Abstract: Apparatus, methods and uses that allow extended reach drilling by virtue of the provision in the drillstring and to downhole tools collective vibrations, not tuned specifically to a single resonant frequency, from a hammer assembly that provides vibrations of different frequency ranges.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 13, 2014
    Inventors: Gregory Donald West, Mark Christopher Cunliffe
  • Patent number: 8881844
    Abstract: Disclosed herein is a system for steering the direction of a borehole advanced by cutting action of a rotary drill bit by periodically varying action of a drill bit while continuously rotating a drill string to which the drill bit is operationally attached. The steering system can include a bit perturbation device cooperating with a bent housing subsection and operationally connected to the drill string and to the drill bit. Drill bit action can be varied by periodically varying the rotation speed and/or rate of penetration of the drill bit. Periodic drill bit action results in preferential cutting of material from a predetermined arc of the borehole wall which, in turn, results in borehole deviation. Action of the drill bit can be varied independently of the rotation rate of the drill string.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: November 11, 2014
    Assignee: Precision Energy Services, Inc.
    Inventors: Steven Reid Farley, Michael Louis Larronde, Roger P. Bartel, Charles Lee Mauldin, Robert Anthony Aiello
  • Publication number: 20140311807
    Abstract: A down-the-hole hammer drill that delivers fluid to a cutting face has particular application, but not limited, to a reverse-circulation (RC) down-hole face sampling hammer drill is tailored to the design of the cutting face to improve flushing of the cutting face. An associated drill bit and drive sub are also disclosed.
    Type: Application
    Filed: October 26, 2012
    Publication date: October 23, 2014
    Inventors: Philipp Beierer, Raymond Hill
  • Patent number: 8794347
    Abstract: The invention relates to an arrangement designed to be inserted in a cavity (19) in a front part (14) of a rock drilling machine with a shank adapter (16). The arrangement comprises a cartridge (1) with a flushing head (2) and a guide (3) coaxially arranged to create a longitudinal channel (5) designed as a passage for the shank adapter (16).
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: August 5, 2014
    Assignee: Atlas Copco Rock Drills AB
    Inventors: Jörgen Rodert, Peter Birath
  • Patent number: 8783383
    Abstract: A device used to break rock from within a predrilled borehole through the use of impact pins which strike against the interior sides of a drilled hole. The device is loaded into a drilled hole and then activated by a percussive hammer located above the hole, providing percussive energy to the device which is then transferred to the sidewall of the drilled hole. The device includes an inner piston assembly which includes a driving surface for causing impact pins to strike the interior sidewall of the drilled hole in a rapid percussive manner so as to greatly improve the ability to break and shatter surrounding rock or concrete.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: July 22, 2014
    Inventor: Jeffrey S. Senules
  • Patent number: 8783354
    Abstract: Apparatus and method for adjusting spring preloading in a downhole tool. In an apparatus, a mechanism includes a nut and a piston. The nut is configured to axially compress a spring in the downhole tool. The piston is coupled to the nut. Extension of the piston causes the nut to rotate and compress the spring. The nut is configured to maintain compression of the spring after the piston retracts.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 22, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Mark Sheehan, Jonathan Prill, Jeffery Clausen
  • Publication number: 20140182937
    Abstract: A roller cone drill bit having a bit body. The bit body has a journal bearing coupled to an end portion thereof. A roller cone is coupled to the journal bearing. A first cutting element is coupled to the roller cone. A ratio of a radius of curvature of a crest portion of the first cutting element to a diameter of the first cutting element is between about 0.3:1 and about 0.8:1. A second cutting element is coupled to the roller cone. A ratio of a radius of curvature of a crest portion of the second cutting element to a diameter of the second cutting element is between about 0.05:1 and about 0.3:1. A height of the second cutting element is greater than the height of the first cutting element h between about 0.1 mm and about 6 mm.
    Type: Application
    Filed: December 10, 2013
    Publication date: July 3, 2014
    Applicant: Smith International, Inc.
    Inventors: Robert H. Slaughter, JR., Lokesh Bhatia, Angelo L. Spedale
  • Publication number: 20140182938
    Abstract: A percussion drilling assembly includes a housing with a hammer bit disposed in the lower end portion thereof and configured to move longitudinally within the housing. The hammer bit includes an annular bit shank having a bit strike face and a cutting structure at a lower end portion thereof. An annular piston having a piston strike face arranged and designed to strike the bit strike face is also disposed in the housing. At least one of the bit strike face and the piston strike face has a toroidal curvature profile. A method includes one or more of lowering the percussion drilling assembly into a borehole, engaging the cutting structure with a formation, and impacting the bit strike face of the annular bit shank with the piston strike face of the annular piston.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 3, 2014
    Applicant: Smith International, Inc.
    Inventors: Xiaoge Gan, Lokesh Bhatia, Kevin E. Harrington, Robert H. Slaughter, JR.
  • Publication number: 20140158435
    Abstract: A device is provided for vibration compression or for producing cavities and/or material columns in the ground. The device comprises a vibrator with a pipe which has an upper end and a lower end and also two cable suspensions which are arranged on the pipe at a distance from the upper end. A cable is secured to each cable holder. A support device for the vibrator arrangement comprises a guide device on which the cables are guided in the longitudinal direction of the pipe between the cable holders and the upper end or above the upper end.
    Type: Application
    Filed: April 13, 2012
    Publication date: June 12, 2014
    Inventors: Alexander Degen, Wilhelm Degen
  • Patent number: 8720608
    Abstract: A directional drilling system, a drilling hammer and a fluid flow telemetry modulator use a plurality of magnets arranged to convert rotational motion into reciprocating linear motion. Various types of motor can provide rotational motion to a part of the magnets and various linkages and other devices can cause steering or operation of a modulator valve. A torsional drilling hammer uses a plurality of magnets arranged to convert reciprocating linear motion into reciprocating rotational motion. A motor and linkage drives the linearly moving part of the magnets, and the rotating part provides torsional impact be striking the linearly moving part of the magnets.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: May 13, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Geoffrey C. Downton, Iain Cooper, Mike Williams, Robert Utter
  • Publication number: 20140083778
    Abstract: A device in a drill string component for percussive rock drilling including a thread for threading together with another drill string component including a complementary thread. The thread includes a thread groove formed by two thread flanks and an intermediate thread bottom. In operation one of the flanks forms a pressure flank. The thread groove has an essentially equally shaped sectional form along its axial extension. The thread bottom exhibits at least three surface portions with part-circular shape, as seen in an axial section. The surface portions with part-circular shape have increasing radiuses, as seen from each thread flank to an intermediate surface portion of the thread bottom. Also a thread joint and a drill string component.
    Type: Application
    Filed: May 15, 2012
    Publication date: March 27, 2014
    Applicant: ATLAS COPCO SECOROC AB
    Inventors: Alexander Beronius, Leif Nordfeldt
  • Patent number: 8678107
    Abstract: A system and method are provided for producing controlled vibrations within a borehole. In one example, the system includes an encoder plate having a first surface, an anvil plate having a second surface, a movement mechanism configured to enable translational movement of the encoder plate relative to the anvil plate to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats, and a vibration control mechanism configured to selectively control an amplitude of the vibration beats to encode information therein.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 25, 2014
    Assignee: Hunt Advanced Drilling Technologies, L.L.C.
    Inventor: Todd W. Benson
  • Patent number: 8657040
    Abstract: A percussion drilling assembly includes an outer tubular, an inner tubular coupled within the outer tubular at a threaded region, a drill bit slideably disposed within the inner tubular, and a locking system located proximate the threaded region. The locking system is actuatable by translation of the drill bit relative to the locking system, whereby the locking system is configured to prevent rotation of the inner tubular relative to the outer tubular in at least a first direction.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 25, 2014
    Assignee: Smith International, Inc.
    Inventors: Alan Jackson Marshall, Shantanu Swadi, James A. Simson
  • Patent number: 8651202
    Abstract: A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 18, 2014
    Assignee: Smith International, Inc.
    Inventors: Shantanu Swadi, Lance Underwood, Jack Marshall, Charles Dewey, Kevin Harrington
  • 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
  • Patent number: 8636088
    Abstract: A rock drilling machine and an axial bearing module. The rock drilling machine is equipped with an axial bearing having at least one axial piston for axially positioning a drill shank and for damping stress pulses returning from the rock. The axial bearing includes a module that is detachable in one piece from one installation direction. The axial bearing module includes the required pressure medium channels, seals, bearing surfaces, and a module frame having at least bearing housing in connection therewith.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: January 28, 2014
    Assignee: Sandvik Mining and Construction Oy
    Inventors: Timo Muuttonen, Lars Kandelin, Pekka Saukko
  • Patent number: 8631883
    Abstract: A sectorial force balanced drill bit, including conventional and bi-center drill bits, having the true center of rotation the same as, or about the same as, the bit mass axis. The bit mass axis is a longitudinal axis located off-center to the geometric axis of the bit and comprises the center of mass point. Additionally, a method for sectorially force balancing drill bits is provided. The method includes dividing the drill bit into one or more sections, calculating the magnitude and direction of the resultant radial imbalance force for the cutters of each section, adjusting the cutters and/or blades until the magnitude of the resultant radial imbalance force is about the same for each section and the direction of the resultant radial imbalance force for each section is about 2?/n, where n is the number of sections, from the adjacent section.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: January 21, 2014
    Assignee: Varel International Ind., L.P.
    Inventor: Alfazazi Dourfaye
  • Publication number: 20130264119
    Abstract: A downhole apparatus connected to a workstring within a wellbore. The workstring is connected to a bit member. The apparatus includes a mandrel operatively connected to a downhole motor mechanism, an anvil member operatively formed on the bit member, the anvil member being operatively connected to the mandrel, a radial bearing housing unit operatively connected to the workstring, with the radial bearing housing unit being disposed about the mandrel, and a hammer member slidably attached to the radial bearing housing unit.
    Type: Application
    Filed: March 22, 2013
    Publication date: October 10, 2013
    Inventors: Gunther H-H. von Gynz-Rekowski, Michael V. Williams, William C. Herben
  • Patent number: 8511403
    Abstract: A steerable ground piercing tool includes an elongated outer housing having a lengthwise extending bore and an inner assembly at least in part disposed within the outer housing. The inner assembly includes a rotatable chisel having a longitudinally extending shaft at least in part disposed within the housing bore. The chisel has a first end defining an asymmetric tip and a second end defining a first impact surface for receiving a reciprocating action impact to drive the tool through the ground. The inner assembly further includes a conversion mechanism to selectively convert upon activation thereof at least a first portion of the reciprocating action imparted to the first impact surface into combined reciprocation and rotation of the tool.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: August 20, 2013
    Assignee: Louisiana Tech University Research Foundation
    Inventors: Erez N. Allouche, David Hall, Michael Swanbom, Slade Richard
  • Publication number: 20130192897
    Abstract: An apparatus for use in controlling first and second downhole tools includes a first cyclical indexing mechanism associated with a first downhole tool, and a second cyclical indexing mechanism associated with a second downhole tool, wherein the first indexing mechanism defines at least three sequential indexing positions within a cycle and the second indexing mechanism defines at least two sequential indexing positions within a cycle. The apparatus includes at least one actuator for actuating the first and second indexing mechanisms in response to a common stimulus to cause said first and second indexing mechanisms to advance between respective indexing positions so as to permit co-ordination of the operational states of the associated first and second downhole tools. The apparatus may be used for controlling first and second under reamers or for controlling an under reamer and a corresponding stabilizer.
    Type: Application
    Filed: January 30, 2013
    Publication date: August 1, 2013
    Applicant: NOV DOWNHOLE EURASIA LIMITED
    Inventor: NOV Downhole Eurasia Limited
  • Publication number: 20130186689
    Abstract: A downhole tool comprises a first connector sub coupled to an outer housing. A mandrel is disposed in the outer housing and is coupled to a mandrel. The second connector sub is slidably engaged with the outer housing so that torque loads are transferred from the first connector sub to the second connector sub through the outer housing independently of the mandrel.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 25, 2013
    Applicant: National Oilwell Varco, L.P.
    Inventor: National Oilwell Varco, L.P.
  • 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: 20130098689
    Abstract: In a two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material, including a drill head (1) and an adapter part (7), which is fixed in an interior of the drill head (1) by way of interacting, complementary threads (11, 14) and is intended for providing the coupling to a drill string, wherein an end face (3) of the drill head (1) that is remote from a borehole interior rests on a complementarily formed stop or support surface of the adapter part (7), the end face (3) of the drill head (1) that is remote from the borehole interior and the stop or support surface of the adapter part (7) interacting therewith comprise complementarily formed wedge-shaped surfaces (4, 6) with end teeth (5, 8), and a lead angle (?1) of the wedge-shaped surfaces (4, 6) is smaller than a lead angle (?2) of an internal thread of the drill head (1) or the external thread interacting therewith of the adapter part (7) or of the drill string.
    Type: Application
    Filed: April 6, 2011
    Publication date: April 25, 2013
    Applicant: DYWIDAG-SYSTEMS INTERNATIONAL GMBH
    Inventors: Walter Karpeilus, Karl Böhm
  • Patent number: 8365827
    Abstract: A series of jet nozzles have a telescoping structure designed to impact the borehole wall and initiate a fracture. The nozzles can be extended through fluid pumped through them or with some mechanical force from within the bottom hole assembly. The leading ends of the telescoping assembly can be sharp and hardened to facilitate the initiation of a formation fracture in an open hole. The telescoping structures can be disposed in a single or multiple rows with the circumferential spacing being such that each telescoping structure is designed to cover a target circumferential distance of 45 degrees or less so that jetted fluid from at least one jet will be within 22.5 degrees of a location of maximum formation stresses to reduce the tortuosity of the created fractures from jetting through the nozzles with possible enhancement of the fracturing from added annulus pressure.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: February 5, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Maria M. O'Connell, Michael H. Johnson, David A. Castillo
  • Publication number: 20130008722
    Abstract: A down-hole hammer comprising a drill bit (10) and a drive collar (11) with an interconnection therebetween for causing rotation of the drill bit upon rotation of the drive collar. The drill bit (10) comprises a drill bit head (13) and a shank (19), the drill bit head (13) defining a cutting face (15) and having a circumferential shoulder section (17) adjacent the cutting face (15). The shank (19) extends from the shoulder section (17) in the direction away from the cutting face (15). The interconnection between the drill bit (10) and the drive collar (11) comprises a spline assembly including at least one spline (43) on the shoulder section (17) for mating engagement with at least one counterpart spline (63) on the drive collar (11) to provide a drive coupling therebetween while also allowing the drill bit (10) to slide axially within the drive collar (11) to perform a percussive action.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Inventors: Andrew S. Gilbert, Barry J. Thompson
  • Patent number: 8347988
    Abstract: A down-hole hammer comprising a drill bit (10) and a drive collar (11) with an interconnection therebetween for causing rotation of the drill bit upon rotation of the drive collar. The drill bit (10) comprises a drill bit head (13) and a shank (19), the drill bit head (13) defining a cutting face (15) and having a circumferential shoulder section (17) adjacent the cutting face (15). The shank (19) extends from the shoulder section (17) in the direction away from the cutting face (15). The interconnection between the drill bit (10) and the drive collar (11) comprises a spline assembly including at least one spline (43) on the shoulder section (17) for mating engagement with at least one counterpart spline (63) on the drive collar (11) to provide a drive coupling therebetween while also allowing the drill bit (10) to slide axially within the drive collar (11) to perform a percussive action.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: January 8, 2013
    Inventors: Andrew S. Gilbert, Barry J Thompson
  • Publication number: 20120285747
    Abstract: The present invention relates to a percussion rock drilling machine comprising a front head (1), in which front head (1) are arranged a flush housing (26) and a flush connector (25) for flushing medium. According to the invention, a sheath (31) of rust-resistant material is arranged at the front head (1) around the flush housing (26), such that flushing medium can enter the flush housing (26) through the flush connector (25), without coming into contact with the front head (1).
    Type: Application
    Filed: December 6, 2010
    Publication date: November 15, 2012
    Applicant: ATLAS COPCO ROCK DRILLS AB
    Inventor: Ulf Nilsson
  • Patent number: 8307919
    Abstract: A downhole tool string, comprising a tool string bore and a drill bit located at the bottom of the tool string. The drill bit comprises a body intermediate a shank and a working surface. The working surface may comprise a substantially coaxial rotationally isolated jack element with a portion of the jack element extending out of an opening formed in the working surface to engage a subterranean formation. The tool string may comprise a driving mechanism adapted to rotate the jack. The clutch assembly disposed within the tool string bore may comprise a first end in communication with the jack element and second end in communication with the driving mechanism.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: November 13, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, David Lundgreen
  • Publication number: 20120247835
    Abstract: In a method for drilling holes in soil or rock material, wherein a borehole is formed by a drill bit by a percussive and/or rotational movement, a casing adjoining the drill bit is introduced into the borehole and material that is removed is introduced into the annular space formed between the outer circumference of the drill rod and the inner circumference of the casing via at least one passage opening formed between the drill bit and the casing, and is discharged from the borehole, the impact energy of the drill rod is applied to the drill bit via an adapter cooperating with the drill bit and a drill rod, and that the impact energy is applied to the drill bit partially via an impact shoulder of the adapter and partially via a threaded connection between the adapter and the drill bit.
    Type: Application
    Filed: November 5, 2010
    Publication date: October 4, 2012
    Inventors: Karl Böhm, Walter Karpellus
  • Patent number: 8256539
    Abstract: A steerable ground piercing tool includes an elongated outer housing having a lengthwise extending bore and an inner assembly at least in part disposed within the outer housing. The inner assembly includes a rotatable chisel having a longitudinally extending shaft at least in part disposed within the housing bore. The chisel has a first end defining an asymmetric tip and a second end defining a first impact surface for receiving a reciprocating action impact to drive the tool through the ground. The inner assembly further includes a conversion mechanism to selectively convert upon activation thereof at least a first portion of the reciprocating action imparted to the first impact surface into combined reciprocation and rotation of the tool.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: September 4, 2012
    Assignee: Louisiana Tech University Research Foundation
    Inventors: Erez N. Allouche, David Hall, Michael Swanbom, Slade Richard
  • Patent number: 8245798
    Abstract: A female part intended for top hammer-drilling equipment includes a thread in the form of a ridge in a wall. The ridge is delimited by a crest and two flanks between which a likewise helical groove having a bottom runs. An end the of the groove is defined by a borderline, which separates the groove bottom from a part surface formed in the inside of the wall, the width of which part surface successively decreases in the peripheral direction, and which has a rotationally symmetrical shape essentially similar to the rotationally symmetrical basic shape of the thread.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: August 21, 2012
    Assignee: Sandvik Intellectual Property AB
    Inventors: Peter Nava, Peter Sörensen
  • Publication number: 20120152620
    Abstract: An arrangement intended to be part of a rock drilling machine for percussive drilling. The arrangement includes a casing part with at least one plane end plane. The end plane includes at least a first region and a second region. The first region includes at least a part of the outer contour of the end plane and includes of a material that resists corrosion.
    Type: Application
    Filed: June 18, 2010
    Publication date: June 21, 2012
    Applicant: ATLAS COPCO ROCK DRILLS AB
    Inventors: Jörgen Rodert, Kurt Andersson
  • Publication number: 20120103692
    Abstract: A system and method of drilling. The method may generally include providing a drilling system including a rotary motor operable to rotationally drive a drill bit and providing a supply of compressible drill fluid, the supply producing an operating volumetric flow rate of fluid in a normal operating condition. The rotary motor operates at a rotational operating speed under a first volumetric flow rate of fluid, and the supply provides a volumetric flow rate of fluid greater than the first volumetric flow rate of fluid. The method further includes supplying the first volumetric flow rate of fluid from the supply to the rotary motor, and diverting a portion of fluid flow from the supply through a jet sub.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Applicant: ATLAS COPCO SECOROC LLC
    Inventors: Jeffrey P. WHITE, Dale Richard Wolfer
  • Publication number: 20120085584
    Abstract: A hydraulic fluid control system (1) for the control of pressure fluid supply to consumers being a feed motor (2), a percussion device (4) and a rotation motor (3) of a rock drilling machine, said system including a regulating valve (6,7,8) for each one of the consumers (2,3,4), wherein fluid conduits lead between the regulating valves and the respective consumers, the system having: an electronically controlled auxiliary control unit (11) which includes at least one electrically controlled auxiliary valve (14) for the connection to and intercepting in at least one of the fluid conduits, at least one sensor for sensing prevailing fluid parameter values in at least one member of the rock drilling machine the and sending sensor signals to the auxiliary control unit as sensor input signal is-values, and a processor (12) having at least one parameter sensor input signal entry (S1-S5, I1-I5) for receiving said sensor input signal is-values and at least one control signal exit (V1-V6) for signal control of a res
    Type: Application
    Filed: June 28, 2010
    Publication date: April 12, 2012
    Inventors: Deyi Jiao, Eugene Cheng, Jonas Sinnerstad, Hans Gustavsson
  • Publication number: 20120073878
    Abstract: A down hole apparatus for generating a pulsing action includes a tubular housing a rotating first mandrel with a first cam profile and a reciprocating second mandrel with a second cam profile, which engages the first cam profile. Upon rotational movement of the first mandrel, the first cam profile exerts an axial force upon the second cam profile to initiate a pulsing action by forcing the second mandrel away from the first mandrel. Springs bias the second mandrel back toward the first mandrel, thereby completing the pulsing action and maintaining the second cam profile engaged with the first cam profile.
    Type: Application
    Filed: January 10, 2011
    Publication date: March 29, 2012
    Applicant: NIGHTHAWK ENERGY SERVICES CANADA LTD.
    Inventors: Mike ZULAK, Dave KUTINSKY
  • Publication number: 20120061145
    Abstract: The present invention relates to method and apparatus for drilling a large diameter hole in the ground. The present invention comprises a hammer drill (40) installed at the bottom of a rod (104) assembled in multi-stages at support means on the ground comprising a pilot hammer drill (44, 48, 49) and a reamer hammer drill (41, 46, 47) coupled to each other through a key structure (42, 43) formed in the vertical direction so as to allow simultaneous rotation and up-and-down movement relative to each other, wherein in a drilling operation, a repetition is made such that the hammer drill (40) is made to rotate and the pilot hammer drill (44, 48, 49) is lowered to drill a pilot hole of small diameter (w) to a predetermined depth (d) and is lifted up to original position, and then the reamer hammer drill (41, 46, 47) is lowered to enlarge the hole to a large diameter (W) down to the predetermined depth (d).
    Type: Application
    Filed: April 14, 2010
    Publication date: March 15, 2012
    Applicant: CORE GEOTECHNICS CO., LTD.
    Inventor: Sun Keun Park
  • Patent number: 8132631
    Abstract: There is provided a method for drilling a hole into the ground and installing a geothermal transfer loop. A drilling apparatus is positioned at a desired location. The drilling apparatus includes a rotating and vibrating apparatus, such as a sonic drill, for rotating and vibrating a hollow drill string into the ground. The hollow drill string having an inner space. A hole is drilled to a desired depth by rotating and vibrating the hollow drill string into the ground while discharging fluid into the inner space of the hollow drill string. The fluid forming a fluid column in the inner space of the drill string. The fluid column impedes entry of ground materials into the inner space of the drill string and is vibrated to create a water hammer for adding an additional drilling force. A geothermal transfer loop is lowered into the inner space of the hollow drill string and the drill string is removed from the ground. The method may also include discharging grouting material into the hole.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 13, 2012
    Inventor: Raymond J. Roussy
  • Patent number: 8083010
    Abstract: A drilling device used for drilling into ground, rock or for reaming a predrilled hole includes several hammering bits in a circular shape and equipped with hammers, whereupon they together drill a hole which has a larger diameter. A casing tube can be pulled out of the hole/pushed into the drilled hole. A tubular, rotatable drill rod tube resides in the casing tube. The hammers are located in a circular shape and are each attached to the outer surface of the drill rod tube by joint/hinge attachments lying essentially in the drilling direction. Rotation of the drill rod tube in a first direction turns the hammers and associated bits outwardly from the drill rod tube, and rotation in another direction turns the hammers with their bits inwardly towards the drill rod tube so that they can be pulled away with the drill rod tube from inside the casing tube.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: December 27, 2011
    Inventors: Teijo Hulkkonen, Hannu Paasonen
  • Patent number: 8051927
    Abstract: A drill bit for percussive rock drilling of the type that comprises a front head and a tubular skirt, which extends rearward from the head to a rear, ring-shaped end and includes an internal thread for the transfer of combined impact and rotary motions to the drill bit is disclosed. The rear end of the skirt is, via an unelastic joint, e.g., a friction weld, united to a front end of a sleeve having an envelope surface, from which a plurality of projections are peripherically spaced-apart from each other project, e.g., ridges, having the purpose of guiding the drill bit in the drill hole. By assembling the drill bit of two parts, the internal thread can be turned with high accuracy and smoothness, at the same time as the drill bit is given an inherent good controllability. In an additional aspect, a method for the manufacture of such a drill bit is also disclosed.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: November 8, 2011
    Assignee: Sandvik Intellectual Property AB
    Inventor: Peter Nava
  • Patent number: 8051926
    Abstract: The present invention relates to a control device for an impulse-generating device for inducing a shock wave in a tool, in which said impulse-generating device comprises an impact element for transmitting said shock wave to said tool, a counter pressure chamber acting against the impact element and a device for reducing a pressure in the counter-pressure chamber. The control device comprises control means for regulating the reduction of the pressure in said computer-pressure chamber. The invention also relates to an impulse-generating device.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: November 8, 2011
    Assignee: Atlas Copco Rock Drills AB
    Inventor: Kenneth Weddfelt
  • Publication number: 20110240373
    Abstract: A down-the-hole drill hammer assembly includes a casing, a drill stem, a drilling lug segment and a pilot drill bit is provided. The drill stem is housed within the casing and includes an abutment surface. The drilling lug segment is slidably engaged with a distal end of the drill stem and movable between an initial configuration and an extended configuration. The drilling lug segment includes a proximal end engageable with the abutment surface of the drilling lug segment. The drill stem is movable between first and second positions within the pilot drill bit. In moving to the second position, the drill stem slidingly engages the drilling lug segment and moves the drilling lug segment to the extended configuration.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 6, 2011
    Applicant: CENTER ROCK, INC.
    Inventors: Leland H. LYON, Warren Thomas LAY
  • Publication number: 20110232970
    Abstract: A method of drilling a subterranean wellbore can include extending coiled tubing into the wellbore, and actuating an impact tool interconnected to the coiled tubing, thereby delivering impacts to a drill bit. A coiled tubing drilling system for drilling a subterranean wellbore can include coiled tubing, a drill bit, and an impact tool which delivers impacts to the drill bit.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 29, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Aaron M. MILLER, Derrick W. Lewis