Patents by Inventor Mitchell A. Rothe
Mitchell A. Rothe 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: 11428050Abstract: A hybrid rotary drill bit having at least one fixed blade and at least one rolling cutter assembly is configured for reverse fluid flow from an annulus, through junk slots and into a fluid pathway system located substantially centrally to a bit body. The fluid pathway system may be located underneath a portion of the at least one fixed blade.Type: GrantFiled: October 20, 2015Date of Patent: August 30, 2022Assignee: Baker Hughes Holdings LLCInventor: Mitchell Rothe
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Patent number: 10920497Abstract: A bladeless polycrystalline diamond compact (PDC) drill bit includes a head having a plurality of knots protruding from a drilling face of the head. Each of the plurality of knots includes a single cutter. Each of the cutters is arranged about a central axis of the head such that each cutter has a unique radial position and angular position relative to the central axis. The head defines at least one fluid port extending through the drilling surface.Type: GrantFiled: January 9, 2019Date of Patent: February 16, 2021Assignee: ULTERRA DRILLING TECHNOLOGIES, L.P.Inventors: Mitchell Rothe, Ben Chrest
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Publication number: 20210010330Abstract: A bladeless polycrystalline diamond compact (PDC) drill bit includes a head having a plurality of knots protruding from a drilling face of the head. Each of the plurality of knots includes a single cutter. Each of the cutters is arranged about a central axis of the head such that each cutter has a unique radial position and angular position relative to the central axis. The head defines at least one fluid port extending through the drilling surface.Type: ApplicationFiled: July 9, 2019Publication date: January 14, 2021Applicant: Ulterra Drilling Technologies, L.P.Inventors: Mitchell Rothe, Ben Chrest
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Patent number: 10801266Abstract: An earth-boring tool includes a body, at least one blade, and at least one rotatable cutting structure. The blade extends axially from the body and extends radially outward from a center longitudinal axis of the earth-boring tool to less than an outer diameter of the earth-boring tool. The blade defines a first cutting profile. The at least one rotatable cutting structure assembly is coupled to the body and includes a leg extending axially from the body and a rotatable cutting structure rotatably coupled to the leg. The rotatable cutting structure defines a second cutting profile extending to the outer diameter of the earth-boring tool. The first cutting profile overlaps with the second cutting profile in a radial direction in an amount that is less than 20% of the outer diameter of the earth-boring tool. A method of making an earth-boring tool.Type: GrantFiled: May 18, 2018Date of Patent: October 13, 2020Assignee: Baker Hughes, a GE company, LLCInventors: Gregory L. Ricks, Mitchell A. Rothe, Floyd C. Felderhoff
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Publication number: 20200217142Abstract: A bladeless polycrystalline diamond compact (PDC) drill bit includes a head having a plurality of knots protruding from a drilling face of the head. Each of the plurality of knots includes a single cutter. Each of the cutters is arranged about a central axis of the head such that each cutter has a unique radial position and angular position relative to the central axis. The head defines at least one fluid port extending through the drilling surface.Type: ApplicationFiled: January 9, 2019Publication date: July 9, 2020Applicant: Ulterra Drilling Technologies, L.P.Inventors: Mitchell Rothe, Ben Chrest
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Patent number: 10597947Abstract: Reamer for earth-boring applications may include a body having a longitudinal axis and a blade carried by the body. The blade may include at least one cutting element located at a first radial distance from the longitudinal axis and a gage pad located at a second, smaller radial distance from the longitudinal axis. Methods of enlarging pilot holes in earth formations utilizing reamers may involve removing earth material from a sidewall of the pilot hole utilizing at least one cutting element located at a first radial distance from a longitudinal axis of a body of the reamer on a blade of a reamer. The reamer may be stabilized by placing a gage pad located on the blade in sliding contact with a portion of the sidewall of the pilot hole, the gage pad located at a second, smaller radial distance from the longitudinal axis.Type: GrantFiled: May 18, 2018Date of Patent: March 24, 2020Assignee: Baker Hughes, a GE company, LLCInventors: Nathaniel R. Adams, Mitchell A. Rothe, Kendrick D. McGee, Mitchell F. Marks
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Publication number: 20190352972Abstract: Reamer for earth-boring applications may include a body having a longitudinal axis and a blade carried by the body. The blade may include at least one cutting element located at a first radial distance from the longitudinal axis and a gage pad located at a second, smaller radial distance from the longitudinal axis. Methods of enlarging pilot holes in earth formations utilizing reamers may involve removing earth material from a sidewall of the pilot hole utilizing at least one cutting element located at a first radial distance from a longitudinal axis of a body of the reamer on a blade of a reamer.Type: ApplicationFiled: May 18, 2018Publication date: November 21, 2019Inventors: Nathaniel R. Adams, Mitchell A. Rothe, Kendrick D. McGee, Mitchell F. Marks
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Publication number: 20190352970Abstract: An earth-boring tool includes a body, at least one blade, and at least one rotatable cutting structure. The blade extends axially from the body and extends radially outward from a center longitudinal axis of the earth-boring tool to less than an outer diameter of the earth-boring tool. The blade defines a first cutting profile. The at least one rotatable cutting structure assembly is coupled to the body and includes a leg extending axially from the body and a rotatable cutting structure rotatably coupled to the leg. The rotatable cutting structure defines a second cutting profile extending to the outer diameter of the earth-boring tool. The first cutting profile overlaps with the second cutting profile in a radial direction in an amount that is less than 20% of the outer diameter of the earth-boring tool. A method of making an earth-boring tool.Type: ApplicationFiled: May 18, 2018Publication date: November 21, 2019Inventors: Gregory L. Ricks, Mitchell A. Rothe, Floyd C. Felderhoff
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Patent number: 10190366Abstract: An earth-boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drill string; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from a center of the bit outward toward a gage region of the bit but do not include a gage cutting region, and wherein at least one roller-cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, an apex of the roller-cone cuType: GrantFiled: April 25, 2016Date of Patent: January 29, 2019Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Robert J. Buske, Rudolf C. Pessier, Don Q. Nguyen, Karlos Cepeda, Michael S. Damschen, Mitchell A. Rothe, Johnathan Howard, Gregory C. Prevost, Chaitanya K. Vempati, John F. Bradford
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Patent number: 10072462Abstract: An earth-boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drill string; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from a center of the bit outward toward a gage region of the bit but do not include a gage cutting region, and wherein at least one roller cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, an apex of the roller cone cuType: GrantFiled: April 13, 2016Date of Patent: September 11, 2018Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Rudolf C. Pessier, Mitchell A. Rothe, Don Q. Nguyen, Karlos Cepeda, Michael S. Damschen, Robert J. Buske, Johnathan Howard, John F. Bradford, Gregory C. Prevost, Chaitanya K. Vempati
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Publication number: 20160251902Abstract: An earth boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drillstring; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from the center of the bit outward toward the gage of the bit but do not include a gage cutting region, and wherein at least one roller cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, the apex of the roller cone cutteType: ApplicationFiled: April 25, 2016Publication date: September 1, 2016Applicant: BAKER HUGHES INCORPORATEDInventors: Anton F. ZAHRADNIK, Robert J. BUSKE, Rudolf C. PESSIER, Don Q. NGUYEN, Karlos CEPEDA, Michael S. DAMSCHEN, Mitchell A. ROTHE, Johnathan HOWARD, Gregory C. PREVOST, Chaitanya K. VEMPATI, John F. BRADFORD
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Publication number: 20160230467Abstract: An earth-boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drill string; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from the center of the bit outward toward the gage of the bit but do not include a gage cutting region, and wherein at least one roller cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, the apex of the roller cone cuttType: ApplicationFiled: April 13, 2016Publication date: August 11, 2016Applicant: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Rudolf C. Pessier, Mitchell A. Rothe, Don Q. Nguyen, Karlos Cepeda, Michael S. Damschen, Robert J. Buske, Johnathan Howard, John F. Bradford, Gregory C. Prevost, Chaitanya K. Vempati
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Patent number: 9353575Abstract: An earth boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drillstring; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from the center of the bit outward toward the gage of the bit but do not include a gage cutting region, and wherein at least one roller cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, the apex of the roller cone cutteType: GrantFiled: November 15, 2012Date of Patent: May 31, 2016Assignee: BAKER HUGHES INCORPORATEDInventors: Anton F. Zahradnik, Robert J. Buske, Rudolf C. Pessier, Don Q. Nguyen, Karlos Cepeda, Michael S. Damschen, Mitchell A. Rothe, Johnathan Howard, Gregory C. Prevost, Chaitanya K Vempati, John F. Bradford
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Publication number: 20160108680Abstract: A hybrid rotary drill having at least one fixed blade and at least one rolling cutter assembly is configured for reverse fluid flow from the annulus, through junk slots and into a fluid pathway system located substantially centrally to the bit body. The fluid pathway system may be located underneath a portion of the at least one fixed blade.Type: ApplicationFiled: October 20, 2015Publication date: April 21, 2016Applicant: BAKER HUGHES INCORPORATEDInventor: Mitchell ROTHE