Patents by Inventor Gary R. Portwood
Gary R. Portwood has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230167689Abstract: A drill bit includes a bit body with high and low fluid pressure bodies. The low-pressure bit body includes a fixed cutting structure, and the high-pressure bit body includes a first high-pressure fluid channel and nozzle capable of withstanding fluid pressures greater than 40 kpsi (276 MPa). A bottomhole assembly includes a drill bit with a bit body having fixed cutter and fluid jetting portions. Low and high-pressure channels in the bit body exit in the fixed cutter and fluid jetting portions. The first high-pressure nozzle is coupled to the fluid jetting portion and the high-pressure fluid channel, and a plurality of fixed cutting elements are coupled to the fixed cutter portion. A pressure intensifier is coupled to the drill bit and is configured to increase a pressure of a fluid supplied to the high-pressure fluid channel in the bit body.Type: ApplicationFiled: January 30, 2023Publication date: June 1, 2023Inventors: Gary R. Portwood, Simone Pallesi, Alessio Cechi, Alessandro Bertini
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Publication number: 20230097242Abstract: A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.Type: ApplicationFiled: November 28, 2022Publication date: March 30, 2023Inventors: Gary R. Portwood, Luca Tedeschi, Alessandro Bertini, Simone Pallesi, Johann Obermair, James Layne Larsen, Alessio Cechi
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Patent number: 11566475Abstract: A drill bit includes a bit body with high and low fluid pressure bodies. The low-pressure bit body includes a fixed cutting structure, and the high-pressure bit body includes at least one high-pressure fluid channel and nozzle capable of withstanding fluid pressures greater than 40 kpsi (276 MPa). A bottomhole assembly includes a drill bit with a bit body having fixed cutter and fluid jetting portions. Low and high-pressure channels in the bit body exit in the fixed cutter and fluid jetting portions. A high-pressure nozzle is coupled to the fluid jetting portion and the high-pressure fluid channel, and a plurality of fixed cutting elements are coupled to the fixed cutter portion. A pressure intensifier is coupled to the drill bit and is configured to increase a pressure of a fluid supplied to the high-pressure fluid channel in the bit body.Type: GrantFiled: July 5, 2019Date of Patent: January 31, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Gary R. Portwood, Simone Pallesi, Alessio Cechi, Alessandro Bertini
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Patent number: 11512536Abstract: A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.Type: GrantFiled: May 20, 2019Date of Patent: November 29, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Gary R. Portwood, Luca Tedeschi, Alessandro Bertini, Simone Pallesi, Johann Obermair, James Layne Larsen, Alessio Cechi
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Publication number: 20210277721Abstract: A drill bit includes a bit body with high and low fluid pressure bodies. The low-pressure bit body includes a fixed cutting structure, and the high-pressure bit body includes at least one high-pressure fluid channel and nozzle capable of withstanding fluid pressures greater than 40 kpsi (276 MPa). A bottomhole assembly includes a drill bit with a bit body having fixed cutter and fluid jetting portions. Low and high-pressure channels in the bit body exit in the fixed cutter and fluid jetting portions. A high-pressure nozzle is coupled to the fluid jetting portion and the high-pressure fluid channel, and a plurality of fixed cutting elements are coupled to the fixed cutter portion. A pressure intensifier is coupled to the drill bit and is configured to increase a pressure of a fluid supplied to the high-pressure fluid channel in the bit body.Type: ApplicationFiled: July 5, 2019Publication date: September 9, 2021Inventors: Gary R. Portwood, Simone Pallesi, Alessio Cechi, Alessandro Bertini
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Publication number: 20210140245Abstract: A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.Type: ApplicationFiled: May 20, 2019Publication date: May 13, 2021Inventors: Gary R. Portwood, Luca Tedeschi, Alessandro Bertini, Simone Pallesi, Johann Obermair, James Layne Larsen, Alessio Cechi
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Publication number: 20160145945Abstract: A low collision damage bit may include one or more roller cones including a first material and a second material. The bit may have a bit axis and a bit body, and the second material of the one or more roller cones may be positioned farther from the bit axis than the bit body. The second material may have a hardness or yield strength less than the first material.Type: ApplicationFiled: November 18, 2015Publication date: May 26, 2016Inventors: Gary R. Portwood, Cary A. Roth, Luca Tedeschi
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Patent number: 7832506Abstract: Cutting elements offering increased toughness and thermal fatigue resistance can be formed of a wear resistant material having coarse grains disposed in a binder matrix with a binder content of at least about 18% by weight. The coarse grains include grains of at least one selected from the group of a transition metal carbide, a transition metal boride, and transition metal nitride. The binder content and coarse grain size may be selected to provide a Rockwell A hardness of at least about 75 Ra or a wear number of at least about 1.5.Type: GrantFiled: March 31, 2008Date of Patent: November 16, 2010Assignee: Smith International, Inc.Inventors: Dah-Ben Liang, Gary R. Portwood, James C. Minikus, Amardeep Singh, Jonathan Bitler
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Patent number: 7743857Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: GrantFiled: May 6, 2008Date of Patent: June 29, 2010Assignee: Smith International, Inc.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Publication number: 20090065261Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: ApplicationFiled: May 6, 2008Publication date: March 12, 2009Applicant: SMITH INTERNATIONAL, INC.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Publication number: 20080245576Abstract: Cutting elements offering increased toughness and thermal fatigue resistance can be formed of a wear resistant material having coarse grains disposed in a binder matrix with a binder content of at least about 18% by weight. The coarse grains include grains of at least one selected from the group of a transition metal carbide, a transition metal boride, and transition metal nitride. The binder content and coarse grain size may be selected to provide a Rockwell A hardness of at least about 75 Ra or a wear number of at least about 1.5.Type: ApplicationFiled: March 31, 2008Publication date: October 9, 2008Applicant: SMITH INTERNATIONAL, INC.Inventors: Dah-Ben Liang, Gary R. Portwood, James C. Minikus, Amardeep Singh, Jonathan Bitler
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Patent number: 7367413Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: GrantFiled: July 28, 2006Date of Patent: May 6, 2008Assignee: Smith International, Inc.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Patent number: 7124842Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: GrantFiled: September 29, 2005Date of Patent: October 24, 2006Assignee: Smith International, Inc.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Patent number: 6988569Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that the its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: GrantFiled: January 10, 2005Date of Patent: January 24, 2006Assignee: Smith InternationalInventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Patent number: 6848521Abstract: The present invention generally relates to positioning and/or orienting inserts on a gage row and/or a first inner row to optimize the duty among inserts on the gage row and/or insert row of cutting a sidewall and bottom hole of a bore hole such that wear and breakage of inserts are reduced and the life of the bit is enhanced.Type: GrantFiled: September 10, 2003Date of Patent: February 1, 2005Assignee: Smith International, Inc.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Patent number: 6782959Abstract: A cutter element for a drill bit has a crest that defines a crest line. The crest can be non-rectilinear. The crest line of each cutter element defines an angle with respect to the axis of the rolling cone on which the cutter element is mounted. The cutter elements define different angles with respect to the cone axis and with respect to each other.Type: GrantFiled: May 13, 2003Date of Patent: August 31, 2004Assignee: Smith International, Inc.Inventors: James C. Minikus, Chris E. Cawthorne, Stephen C. Steinke, Gary R. Portwood, Gary E. Garcia, David P. Moran, Quan V. Nguyen
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Publication number: 20040045743Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that the its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: ApplicationFiled: September 10, 2003Publication date: March 11, 2004Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Patent number: 6698536Abstract: A roller cone drill bit is disclosed which includes at least one roller cone rotatably mounted to a bit body. The bit body includes therein a lubricant reservoir adapted to supply lubricant to bearings on which the roller cone rotates about the bit body. The bit includes a sensor adapted to detect drilling fluid contamination of the lubricant. The bit includes a processor/transmitter operatively coupled to the sensor and adapted to communicate signals corresponding to detected contamination.Type: GrantFiled: February 20, 2002Date of Patent: March 2, 2004Assignee: Smith International, Inc.Inventors: David P. Moran, Gary R. Portwood
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Patent number: 6640913Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: GrantFiled: June 30, 1998Date of Patent: November 4, 2003Assignee: Smith International, Inc.Inventors: Alan W. Lockstedt, Gary R. Portwood, Scott D. McDonough
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Publication number: 20030188896Abstract: A cutter element for a drill bit has a non-rectilinear crest. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base portion. The non-positive draft allows more of the borehole bottom to be scraped using fewer cutter elements. The cutter elements having non-positive draft can be either tungsten carbide inserts or steel teeth.Type: ApplicationFiled: May 13, 2003Publication date: October 9, 2003Applicant: Smith International, Inc.Inventors: James C. Minikus, Chris E. Cawthorne, Stephen C. Steinke, Gary R. Portwood, Gary E. Garcia, David P. Moran, Quan V. Nguyen