Casing Shoe Type Patents (Class 175/402)
  • Patent number: 9580969
    Abstract: A cutting assembly suitable for use on a drillable drill bit includes one or more cutting members comprising pre-formed pockets. A set of one or more cutters are located within the pre-formed pockets. A detachment facilitating feature is located at the interface between the cutting members and the cutters.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 28, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Michael Wardley, Mitchell Bavidge
  • Publication number: 20140360723
    Abstract: Systems, assemblies, and methods are described which relate to drilling a lateral borehole from a primary wellbore. A primary wellbore may have a casing therein. A window may be milled in the casing using a casing bit. The casing bit may pass through the window and into the surrounding formation. A protective sheath coupled to the casing bit may also extend through the window. The casing bit and protective sheath may remain in place while a drill bit slides through the protective sheath. The drill bit may drill through the casing bit and drill the formation to extend the lateral borehole. An anchor may be used to secure the protective sheath and/or casing bit in place. The drill bit may be included in a single trip assembly with the casing bit and protective sheath.
    Type: Application
    Filed: June 5, 2014
    Publication date: December 11, 2014
    Inventors: Robert D. Utter, Praful C. Desai, Shantanu N. Swadi, James L. Land
  • Patent number: 8887836
    Abstract: Wellbore cleaning bits include a bit body, at least one cutting structure on the bit body, and a shank configured to attach the bit body to a drill string. Drilling systems for cleaning wellbores include a wellbore cleaning bit coupled to a drill string. The wellbore cleaning bit may include a casing bit body and a shank attached to the casing bit body and the drill string. A casing bit may be attached to a shank having a connection portion configured for attachment to a drill string to form wellbore cleaning bits for cleaning at least a section of a wellbore. Furthermore, a casing bit may be advanced into a wellbore using a drill string to clean a wellbore.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: November 18, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Adam R. Williams, Chad T. Jurica, Matthew J. Meiners, Jason Coe
  • Publication number: 20140299386
    Abstract: Earth-boring casing shoes include a crown configured for at least one of drilling and reaming a wellbore when the crown is attached to a section of casing and the casing is advanced into a wellbore. The crown includes a body comprising a corrodible composite material, and at least one cutting structure carried on the body. The casing shoes further include a connection structure configured for attachment to a section of casing. Methods are used to form such casing shoes, and such casing shoes are used to install casing within wellbores.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventor: James Andy Oxford
  • Patent number: 8789610
    Abstract: Earth-boring casing shoes include a crown configured for at least one of drilling and reaming a wellbore when the crown is attached to a section of casing and the casing is advanced into a wellbore. The crown includes a body comprising a corrodible composite material, and at least one cutting structure carried on the body. The casing shoes further include a connection structure configured for attachment to a section of casing. Methods are used to form such casing shoes, and such casing shoes are used to install casing within wellbores.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: July 29, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: James Andy Oxford
  • Patent number: 8657036
    Abstract: A tubing shoe is disclosed with a body adapted to be connected to a section of tubing to be emplaced in a wellbore and a nose provided on the body, wherein the nose includes a failure guide structure for controlling break-up of the nose upon being drilled out from inside the nose. The failure guide structure typically controls break up by limiting the maximum size of pieces of the nose broken off upon drill out, for example, by defining weakened areas of the nose which are prone to failure upon drilling. The failure guide structure can include discontinuities such as slots or bores formed or drilled into the outer surface of the nose. The failure guide structure controls the break up of the nose in a consistent and predictable manner, and typically at a predictable stage during the drill-out process.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: February 25, 2014
    Assignee: Downhole Products Limited
    Inventors: William Barron, Ian Kirk
  • Publication number: 20140041942
    Abstract: A drilling system for boring into ground includes a bottom hole assembly having a rotatable casing shoe, an independently rotatable driveshaft disposed within the casing shoe, and a bearing housing interdisposed between the driveshaft and the casing shoe to control a distance between a centerline of the driveshaft and a centerline of the casing shoe. The driveshaft includes a bit disposed at a distal end thereof, extending beyond the casing shoe distal end. The driveshaft centerline and the casing shoe centerline are substantially parallel and radially offset.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 13, 2014
    Inventor: Robert E. Able
  • Publication number: 20130284515
    Abstract: A method for coupling an earth pipe into the ground when utilizing an apparatus that has a drilling device including a casing part and a drilling unit inside thereof. The drilling unit includes a first drilling member for drilling a center hole and a second drilling member for reaming the center hole for the casing part. The casing part is arranged to be drawn into the hole by the first and/or second drilling member. After drilling a hole for the earth pipe and lifting up the first drilling member, a solidifying mass is led to the bottom of the hole to couple the earth pipe to the surrounding ground. The solidifying mass is brought in the casing part utilizing a flow-through assembly at a lower end of the casing part into a space between an outer surface of the casing part and the hole. Also an apparatus operating.
    Type: Application
    Filed: November 1, 2011
    Publication date: October 31, 2013
    Applicant: Oy Atlas Copco Rotex AB
    Inventor: Kai Gylling
  • Patent number: 8561729
    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. In another implementation, the non-axisymmetric configuration is provided by channels formed in the inner concave surface.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: October 22, 2013
    Assignee: Varel International, Ind., L.P.
    Inventors: William W. King, Michael Reese, Steven W. Drews, Ian Alastair Kirk
  • Patent number: 8528669
    Abstract: An earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made from a high strength material, and has a port formed through the face. The earth removal member further includes a blade. The blade is formed on the head, extends from the side and along the face, and is made from the high strength material. The earth removal member further includes cutters disposed along the blade; and a nozzle adapter. The nozzle adapter has a port formed therethrough, is longitudinally and rotationally coupled to the head, and is made from a drillable material. The earth removal member further includes a nozzle disposed in the adapter port and fastened to the nozzle adapter.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Eric M. Twardowski, Albert C. Odell, II, Guy F. Feasey, Scott Beattie, Sharp Okorie Ugwuocha
  • Patent number: 8297380
    Abstract: Casing shoes comprise a nose portion having an inner profile and an outer profile. At least one cutting structure is on the outer profile. A stem section extends longitudinally from the nose portion. At least one of a float valve mechanism, a cementing stage tool, a float collar mechanism, and a landing collar structure is disposed within the stem section. Methods of installing sections of casing within wellbores comprise advancing the at least one section of casing into contact with subterranean formation material with a casing shoe attached thereto. At least one of a float valve mechanism, a cementing stage tool, a float collar mechanism, and a landing collar structure is carried within the casing shoe into the wellbore. The wellbore is drilled or reamed using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: October 30, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20120255743
    Abstract: Earth-boring casing shoes include a crown configured for at least one of drilling and reaming a wellbore when the crown is attached to a section of casing and the casing is advanced into a wellbore. The crown includes a body comprising a corrodible composite material, and at least one cutting structure carried on the body. The casing shoes further include connection structure configured for attachment to a section of casing. Methods are used to form such casing shoes, and such casing shoes are used to install casing within wellbores.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: James Andy Oxford
  • Patent number: 8225888
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough. Cutting elements and methods of use may be included. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element may be included. Differing abrasive material amount, characteristics, and size of cutting elements may be included. Telescoping casing sections and bits may be included. Embodiments may include: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: July 24, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 8225887
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough. Cutting elements and methods of use may be included. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element may be included. Differing abrasive material amount, characteristics, and size of cutting elements may be included. Telescoping casing sections and bits may be included. Embodiments may include: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: July 24, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 8205693
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough. Cutting elements and methods of use may be included. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element may be included. Differing abrasive material amount, characteristics, and size of cutting elements may be included. Telescoping casing sections and bits may be included. Embodiments may include: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: June 26, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 8167059
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of a plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: May 1, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 8074749
    Abstract: Embodiments of the present invention generally relate to an earth removal member with features for facilitating drill-through. In one embodiment, an earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made from a high strength material, and has a port formed through the face. The earth removal member further includes a blade. The blade is formed on the head, extends from the side and along the face, and is made from the high strength material. The earth removal member further includes cutters disposed along the blade; and a nozzle adapter. The nozzle adapter has a port formed therethrough, is longitudinally and rotationally coupled to the head, and is made from a drillable material. The earth removal member further includes a nozzle disposed in the adapter port and fastened to the nozzle adapter.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 13, 2011
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Eric M. Twardowski, Albert C. Odell, II, Guy F. Feasey, Scott Beattie, Sharp Okorie Ugwuocha
  • Publication number: 20110266069
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: November 3, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110259606
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110259608
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110259604
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110259605
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110259643
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Publication number: 20110209922
    Abstract: A casing end tool has a mandrel and a body that is defined by a wall having an outer surface and an inner surface opposite of the outer surface. The body is fabricated from crystalline tungsten powder and a binder material. The inner surface includes a set of raised bosses or land structures. The body includes a plurality of blades on the outer surface. Each blade has a plurality of cutters. Blade channels and cutter channels on the blades enhance fragmentation of the body during drill out of the casing end tool.
    Type: Application
    Filed: April 27, 2011
    Publication date: September 1, 2011
    Applicant: Varel International
    Inventors: William W. King, Michael Reese, Steven W. Drews, Ian Alastair Kirk, Scott Buteaud
  • Patent number: 8006785
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: August 30, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 7984763
    Abstract: Embodiments of the invention relate to an assembly for forming a cased well. The assembly may include an undercut drillable cementing shoe with a casing string connection at a first end. The shoe includes external tubing that forms a second end of the shoe and has a first section defining an enlarged inner diameter relative to a second section of the external tubing. The assembly may also include an earth removal member coupled to the second end of the shoe. The first section of the shoe is disposed between the earth removal member and the second section of the shoe. In another embodiment, the assembly may include a casing string having a first portion with a larger inner diameter than a second portion. The assembly may also include an earth removal member coupled to an end of the casing string. The first portion of the casing string is disposed between the earth removal member and the second portion of the casing string.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: July 26, 2011
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Thurman B. Carter, David J. Brunnert, David M. Haugen
  • Publication number: 20110139510
    Abstract: An apparatus for reaming a wellbore without rotating a tubular string that is extendable to a surface. A mandrel (102) is coupled to a downhole end of the tubular string. The mandrel (102) has at least one groove (110) in a sidewall portion thereof. A sleeve (112) is operably associated with the mandrel (102) such that longitudinal travel of the mandrel (102) relative to the sleeve (112) shifts the sleeve (112) between extended and contracted positions relative to the mandrel (102). A reamer shoe (122) is coupled to a downhole end of the sleeve (112). At least one coupling device (116) is operably associated with the sleeve (112) and extendable into the at least one groove (110) such that longitudinal travel of the mandrel (102) relative to the sleeve (112) caused the sleeve (112) to rotate relative to the mandrel (102), thereby rotating the reamer shoe (122).
    Type: Application
    Filed: December 16, 2009
    Publication date: June 16, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Daniel Declute-Melancon
  • Patent number: 7896110
    Abstract: A tubing shoe (10) for use on work strings in well bores as are typically utilised in oil and gas production. The shoe comprises a cylindrical body (12) upon which is arranged a reaming portion (22) including pairs of teardrop shaped raised reaming members (26), each pair being mounted oppositely, in parallel and longitudinally along the body. Adjacent pairs of members provide a funnel (42) for collecting approaching debris and a channel for grinding the debris. A nose (14) may be mounted on the end of the shoe, the nose being eccentric or including cutting blades to assist the shoe in breaking through shale and clay stone bridges. A non-aggressive stabiliser (54) in the form of helically arranged blades may also be located on shoe.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: March 1, 2011
    Assignee: Caledus Limited
    Inventor: James Bain
  • Patent number: 7878271
    Abstract: A drill bit (20) for connection to a casing string (R), wherein the bit (20) comprises an annular bit face (21) which is built-up by a matrix and which comprises a sintered diamond-metal powder mixture, wherein the bit face (21) includes a plurality of radially orientated liquid delivery slots (16, 23, 26) for cooling and cleansing the bit face (21), wherein at least one of the liquid delivery slots is comprised of an inner slot (23) which extends radially outwards from the inside (24) of the bit face (21), wherein the slot (23) is terminated with an inner bottom (24) in the bit face (21), wherein a further liquid delivery slot comprises an outer slot (26) that extends radially inwards from the outside (27) of the bit face, and wherein said outer slot is terminated with an outer bottom (28) in the bit face (21).
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: February 1, 2011
    Assignee: Atlas Copco Craelius AB
    Inventor: Göran Larbo
  • Publication number: 20100326729
    Abstract: Casing bits include an expander for enlarging an inner diameter of expandable casing at least partially disposed within a body of the casing bits. Drilling assemblies include a casing bit attached to an end of expandable casing, and an expander disposed in proximity to the casing bit and a distal end of the expandable casing. Methods of forming casing bits include positioning an expander in proximity to a body of a casing bit. Methods of forming drilling assemblies include positioning an expander in proximity to a body of a casing bit and a distal end of expandable casing, and attaching the casing bit to the end of the expandable casing. Methods of casing a wellbore include one or both of drilling and reaming a wellbore using a casing bit attached to a distal end of expandable casing, and forcing an expander through the expandable casing.
    Type: Application
    Filed: April 30, 2010
    Publication date: December 30, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Timothy K. Marvel, Matthew J. Meiners, John G. Evans
  • 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: 20100252331
    Abstract: Methods of attaching a crown of a boring shoe to a casing section include attaching an adaptable shank to a crown, and machining the adaptable shank to configure an end thereof for attachment to a casing section after attaching the adaptable shank to the crown. Additional methods include welding an end of an adaptable shank to a crown to form a boring shoe, selecting the adaptable shank to have an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown, and configuring an opposite end of the adaptable shank for attachment to a particular type of casing section after welding the shank to the crown. Boring shoes have an adaptable shank attached to a crown, wherein the shank comprises a generally cylindrical wall having an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Inventors: Angela D. High, Christopher C. Beuershausen, Adam Richard Williams
  • Patent number: 7775302
    Abstract: An earth boring bit assembly has a tubular mandrel carried by a casing shoe at the lower end of a string of casing. The casing shoe has stabilizer blades spaced circumferentially apart from each other. A cutter arm seat is formed on the leading edge of each blade at a lower end of the casing shoe. Windows are formed in and spaced circumferentially around the mandrel. A cutter arm is pivotally mounted within each window of the mandrel and movable from an extended position located within one of the cutter arm seats to a recessed position within its window. The cutter arm seats support the cutter arms for torque and axial weight. A sleeve inside the mandrel prevents the cutter arms from pivoting to a recessed position until the sleeve is moved to a released position.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: August 17, 2010
    Assignee: Tesco Corporation
    Inventor: Tommy M. Warren
  • Patent number: 7757784
    Abstract: A novel well bore drilling system and method utilizes independently deployable multiple tubular strings to drill, line and cement multiple hole sections without intervening trips to the surface. In one embodiment, the drilling system includes two or more independent, telescoping, tubular members that form a nested tubular assembly and one or more sensors disposed on the nested tubular assembly. The nested tubular string is deployed in the wellbore in conjunction with a Bottom Hole Assembly (BHA). In some embodiments, a drilling motor for rotating a drill bit is also positioned in the tubular assembly. The sensors can be disposed in a stator of the drilling motor or adjacent the motor. Also, in embodiments, the sensors can be positioned on extensible members that can position the sensor or sensors adjacent the wellbore wall.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: July 20, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Roger Fincher, Allen Sinor, Larry Watkins, Joel Wilmes
  • Patent number: 7658242
    Abstract: A hole coring system for drilling large diameter holes with a handheld tool. The drill bit is guided by a mandrel attached to the concrete and serves as a central guidepost that ensures precise centering of the drill bit. Commonly available tools may be used to rotate the drill bit. A lever arm may be attached to the tool and used to resist any torquing action. Additionally, a brace may be attached to the lever arm which may be used to resist any torquing action.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: February 9, 2010
    Inventor: C. Warren Duncan
  • Publication number: 20100025120
    Abstract: An earth boring bit assembly has a tubular mandrel carried by a casing shoe at the lower end of a string of casing. The casing shoe has stabilizer blades spaced circumferentially apart from each other. A cutter arm seat is formed on the leading edge of each blade at a lower end of the casing shoe. Windows are formed in and spaced circumferentially around the mandrel. A cutter arm is pivotally mounted within each window of the mandrel and movable from an extended position located within one of the cutter arm seats to a recessed position within its window. The cutter arm seats support the cutter arms for torque and axial weight. A sleeve inside the mandrel prevents the cutter arms from pivoting to a recessed position until the sleeve is moved to a released position.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 4, 2010
    Applicant: Tesco Corporation (US)
    Inventor: Tommy M. Warren
  • Publication number: 20090159281
    Abstract: A method of running a tubular string into a wellbore comprises running a bore-lining tubular string into a wellbore substantially without rotation, while rotating a cutting structure at a distal leading end of the tubular string. Other methods provide for rotation of the string and the provision of a non-rotating stabiliser towards the leading end of the string.
    Type: Application
    Filed: June 26, 2008
    Publication date: June 25, 2009
    Inventor: Derek F. Herrera
  • Patent number: 7484578
    Abstract: An apparatus for drilling holes in a substrate wherein a mandrel is anchored to the substrate. A hollow drill bit rotates about the mandrel via a drive motor and is a guided along a length of the mandrel.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: February 3, 2009
    Assignee: U.S. Saws, Inc.
    Inventor: C. Warren Duncan
  • Publication number: 20080223575
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Application
    Filed: May 29, 2008
    Publication date: September 18, 2008
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 7413020
    Abstract: Embodiments of the present invention generally provide methods and apparatus for forming a tubular-lined wellbore which does not decrease in diameter with increasing depth or length. Methods and apparatus for forming a substantially monobore well while drilling with casing are provided. In one aspect, a portion of a second casing is expanded into a portion of a first casing having a larger inner diameter than the remaining portion of the first casing string. In another aspect, the portion of the second casing is expanded into a portion of the first casing having a compressible member therearound. In another aspect, a lined lateral wellbore may be constructed by forming a lateral wellbore extending from a main wellbore lined with casing. A diameter of at least a portion of the lateral wellbore may be expanded. An expandable tubular element may be run into lateral wellbore and expanded to have an inner diameter equal to or larger than an inner diameter of the main wellbore casing.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: August 19, 2008
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Thurman B. Carter, David J. Brunnert, David M. Haugen
  • Patent number: 7395882
    Abstract: A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: July 8, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Jack T. Oldham, L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra, Eric C. Sullivan
  • Patent number: 7216727
    Abstract: A drill bit for drilling casing in a well bore. The drill bit is constructed from a combination of relatively soft and relatively hard materials. The proportions of the materials are selected such that the drill bit provides suitable cutting and boring of the well bore while being able to be drilled through by a subsequent drill bit. Methods of applying hard materials to a soft material body are provided.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: May 15, 2007
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Mike Wardley
  • Patent number: 7131506
    Abstract: A flightless rock auger is used for drilling postholes through rock with the use of hydraulic pressure and at slow revolution per minute. The rock auger is used in combination with a conventional flighted auger used for drilling postholes in dirt and clay. During a posthole drilling operation, the rock auger is substituted for a conventional flighted auger as needed for drilling through and removing rock or other hard material such as concrete from the posthole. The rock auger is designed for use at very low revolutions per minute and can function utilizing only the weight of the auger; however, the rock auger is designed for use with pressure drilling units as well for cutting a circular hole through the rock and forming a plug which is to be lodged in the cavity of the rock auger cylinder to be removed from the posthole.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: November 7, 2006
    Assignee: Gator Rock Bits, Inc.
    Inventors: Gary Wayne Hamilton, Charles Hamilton
  • Patent number: 7100713
    Abstract: An expandable reamer shoe is provided for use with expandable casing in a borehole. The reamer shoe has a number of reaming members in the form of blades which remain closed against the body of the shoe when inserted through casing, and can then be expanded to underream below the casing. Additionally, the expandable reamer shoe is made substantially of a drillable material so that the borehole can be extended beyond the point reached by the expandable reamer shoe.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: September 5, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Rory McCrae Tulloch
  • Patent number: 7066253
    Abstract: A shoe for guiding a string within a well-bore comprises an annular body of relatively hard material and a nose portion of relatively soft material which are interlocked so that when the nose portion is drilled through, any remaining parts are held against the annular body. Interlocking is achieved by a dovetail thread. Embodiments are described for the shoe as a reamer shoe and as a drill bit to run in casing.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: June 27, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Peter John Baker
  • Patent number: 6983811
    Abstract: A reamer shoe (1) for mounting on a tubing string has a reaming area (5) supporting a plurality of discrete reaming members (6) typically formed as simple geometrical shapes. The reaming members provide complete circumferential coverage of the shoe body (2) but the individual reaming members are non-continuous and do not fully extend either longitudinally along or circumferentially around the reaming area on the shoe body. The invention therefore provides a reamer shoe for reaming a bore in preparation for receiving casing, which is effective on rotation or reciprocation, regardless of direction or speed.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: January 10, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Mike Wardley
  • Patent number: 6945339
    Abstract: A plurality of chip evacuating grooves (16, 26, 36, 46a, 46b) in a vertical direction in parallel with a rotational axis of a core main body (14) are formed at an outer peripheral face of the core main body (14) in a circumferential direction from a lower end portion to an upper end portion of the core main body (14) in a cylindrical shape provided with a drilling blade (15) at a lower end edge thereof. Further, a sectional area of the chip evacuating groove (16) is formed to gradually increase from a lower end to an upper end of the core main body (14). Further, a number of projections (52, 62, 70, 72) are formed at the outer peripheral face of the core main body (14) between the chip evacuating grooves.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: September 20, 2005
    Assignee: Max Co., Ltd.
    Inventors: Toshio Hiranuma, Masakazu Ishizeki, Tomohiro Koshiba, Kouichi Tsutsumi
  • Publication number: 20040154837
    Abstract: A tool holder (1) for an annular core bit has a bit-side axial stop surface (4) and an end-side splined profile (3) extending in a bit direction and having an outer thread (5) forming radial spline projections of the splined profile (3).
    Type: Application
    Filed: November 26, 2003
    Publication date: August 12, 2004
    Inventor: Hans-Dieter Gaul
  • Publication number: 20040154838
    Abstract: A tool holder (1) and a shank (8) for quick mounting and dismounting an annular core bit (2) and both having cooperating respective guide members (4, 4′) provided at their bit-side ends, flanges (3, 9) arranged coaxially with the guide members (4, 4′) for axially locking same and having, respectively, outer and inner threads, outer and inner cone surfaces (6, 10) located inwardly of the guide members (4, 4′) and axially spaced therefrom with the outer and inner cone surface (6, 10) tapering toward their bit-side ends, and torque transmitting means (5, 5′) arranged between the respective inner guide members (4, 4′) and the outer cone surfaces (6, 10).
    Type: Application
    Filed: November 26, 2003
    Publication date: August 12, 2004
    Inventor: Hans-Dieter Gaul
  • Publication number: 20040140127
    Abstract: A sharpening method and associated sharpening means (1) for a drilling tool (2), which is set with grinding segments (3) comprised of hard material. The sharpening means (1) is filled with abrasive materials (6) and is chordlike.
    Type: Application
    Filed: October 31, 2003
    Publication date: July 22, 2004
    Inventor: Martin Goedickemeier