Patents by Inventor Andrew David Murdock
Andrew David Murdock 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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Patent number: 10711528Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.Type: GrantFiled: January 8, 2019Date of Patent: July 14, 2020Assignee: Ulterra Drilling Technologies, L.P.Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Patent number: 10570665Abstract: A rotating bit with cutters used in drilling operations to advance a borehole in the earth. The bit includes column cutters in the bit body in a recessed central area. The column cutters contact a column of borehole material that is formed during operation. The column cutters are oriented to fracture the column, producing larger cuttings or chips, and to exert a force on the column to limit lateral movement of the bit during operation.Type: GrantFiled: February 19, 2015Date of Patent: February 25, 2020Assignee: Ulterra Drilling Technologies L.P.Inventors: Jason Maw, Benjamin Chrest, Ryan Matthews, Thomas Alan Damian, Carl Aron Deen, Andrew David Murdock
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Patent number: 10563463Abstract: Earth boring tools with a plurality of fixed cutters have side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.Type: GrantFiled: December 30, 2016Date of Patent: February 18, 2020Assignee: Ulterra Drilling Technologies, L.P.Inventors: Rob A. Simmons, Carl Aron Deen, Andrew David Murdock
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Publication number: 20190145181Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.Type: ApplicationFiled: January 8, 2019Publication date: May 16, 2019Applicant: Ulterra Drilling Technologies, L.P.Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Patent number: 10180032Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.Type: GrantFiled: May 9, 2013Date of Patent: January 15, 2019Assignee: Ulterra Drilling Technologies, L.P.Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Patent number: 10160099Abstract: The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.Type: GrantFiled: September 5, 2013Date of Patent: December 25, 2018Assignee: Ulterra Drilling Technologies, L.P.Inventors: Matthew Douglas Mumma, Andrew David Murdock, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Publication number: 20170211336Abstract: Earth boring tools with a plurality of fixed cutters have side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangementsType: ApplicationFiled: December 30, 2016Publication date: July 27, 2017Inventors: Rob A. Simmons, Carl Aron Deen, Andrew David Murdock
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Patent number: 9556683Abstract: Earth boring tools with a plurality of fixed cutters have side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.Type: GrantFiled: December 2, 2013Date of Patent: January 31, 2017Assignee: Ulterra Drilling Technologies, L.P.Inventors: Rob A. Simmons, Carl Aron Deen, Andrew David Murdock
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Publication number: 20150233186Abstract: A rotating bit with cutters used in drilling operations to advance a borehole in the earth. The bit includes column cutters in the bit body in a recessed central area. The column cutters contact a column of borehole material that is formed during operation. The column cutters are oriented to fracture the column, producing larger cuttings or chips, and to exert a force on the column to limit lateral movement of the bit during operation.Type: ApplicationFiled: February 19, 2015Publication date: August 20, 2015Inventors: Jason Maw, Benjamin Chrest, Ryan Matthews, Thomas Alan Damian, Carl Aron Deen, Andrew David Murdock
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Publication number: 20140332286Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.Type: ApplicationFiled: May 9, 2013Publication date: November 13, 2014Applicant: Ulterra Drilling Technologies, L.P.Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Publication number: 20140151133Abstract: Earth boring tools with a plurality of fixed cutters have side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangementsType: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicant: Ulterra Drilling Technologies, L.P.Inventors: Rob A. Simmons, Carl Aron Deen, Andrew David Murdock
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Publication number: 20140069726Abstract: The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.Type: ApplicationFiled: September 5, 2013Publication date: March 13, 2014Applicant: Ulterra Drilling Technologies, L.P.Inventors: Matthew Douglas Mumma, Andrew David Murdock, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
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Patent number: 7308955Abstract: A stabilizer comprises a body having first and second ends, each of which is formed with a respective connector means, the body having an outer wall upon which is formed a plurality of the upstanding blades radially outer surfaces of which define gauge pads, flow channels being defined between adjacent ones of the blades, and at least one bridging region interconnecting two adjacent ones of the blades to form an enclosed passage communicating with an associated one of the flow channels, the bridging region having a surface defining part of an outer gauge surface of the stabilizer, the at least one bridging region being located intermediate and spaced from the first and second ends.Type: GrantFiled: March 20, 2006Date of Patent: December 18, 2007Assignee: ReedHycalog UK LimitedInventors: Steven Paul Barton, Andrew David Murdock, Graham Richard Watson