Patents by Inventor David Dunbar
David Dunbar 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).
-
Publication number: 20220018239Abstract: Transmitting and receiving mud pulse pressure waves at a downhole device. The mud pulse pressure waves may be transmitted from a surface mud pulser and/or by a downhole mud pulser to a downhole device. The mud pulse pressure waves may be detected directly by a transducer or indirectly by detecting physical changes induced in the downhole tool by the pressure waves of the mud pulse. The detected physical changes can be converted to a digital signal for use by the downhole tool. The mud pulse pressure waves may encode information including data, or instructions to the downhole devices.Type: ApplicationFiled: January 7, 2019Publication date: January 20, 2022Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Bradley David DUNBAR, John Leslie WISINGER, JR.
-
Publication number: 20220010637Abstract: A drill bit may comprise a bit body including an electronic housing, one or more electronics coupled within the electronic housing, a transducer housing coupled to the electronic housing, a first transducer seated in the transducer housing, a first pressure tube extending through the bit body and coupled to the transducer housing, and a floating ball in the first pressure tube. A method may comprise allowing a drilling fluid to move through a first entrance and into a pressure tube formed in a bit body of the drill bit, allowing the drilling fluid to exert a force on a floating ball placed within the pressure tube, allowing the floating ball to transmit the force to a fluid placed within the pressure tube on an opposing side of the floating ball from the drilling fluid, and measuring pressure of the fluid with a first transducer.Type: ApplicationFiled: May 16, 2019Publication date: January 13, 2022Applicant: Halliburton Energy Services, Inc.Inventor: Bradley David Dunbar
-
Publication number: 20220003047Abstract: The present disclosure provides a fixed-cutter drill bit including a bit body defining a bit rotational axis, a plurality of blades each having an inner end that is radially closer to the bit rotational axis than a remainder of the respective blade, a central bit surface, and a plurality of cutters disposed on the blades and including an innermost cutter located closest among all of the plurality of cutters to the bit rotational axis and having a flattened cutting surface, a cutting arc, and a relief having ends which is located within and interrupts the cutting arc such that the cutting arc includes at least two portions located on opposite ends of the relief. The disclosure also provides a drilling system including the drill bit and a drill string attached to the drill bit and a surface assembly to rotate the drill string and drill bit.Type: ApplicationFiled: November 7, 2018Publication date: January 6, 2022Inventor: Bradley David Dunbar
-
Patent number: 11162350Abstract: The present disclosure relates to a downhole drilling tool that may include: an earth-boring drill bit including: a bit body; a shank coupled to the bit body; a strain puck removably coupled to the earth-boring drill bit, the strain puck including a strain gauge to collect data indicating a downhole force applied to the earth-boring drill bit during a drilling operation; and a plurality of blades disposed on exterior portions of the bit body, each blade having respective cutting elements disposed thereon.Type: GrantFiled: October 30, 2019Date of Patent: November 2, 2021Assignee: Halliburton Energy Services, Inc.Inventor: Bradley David Dunbar
-
Publication number: 20210148216Abstract: A method for using a mud motor may comprise drilling a borehole into a formation using a drill string connected to the mud motor and the mud motor is connected to a drill bit, measuring one or more parameters of the mud motor in the borehole, and sending the one or more parameters to surface. A system may comprise a mud motor connected to a drill string, a drill bit connected to the mud motor, a strain gauge, and in information handling system. The strain gauge may be connected to the drill bit and configured to take one or more parameters of the mud motor. The information handling system may be in communication with the strain gauge and configured to record the one or more parameters from the strain gauge.Type: ApplicationFiled: August 3, 2020Publication date: May 20, 2021Applicant: Halliburton Energy Services, Inc.Inventors: Lyn Duane Labahn, John Leslie Wisinger, JR., Bradley David Dunbar
-
Publication number: 20210131264Abstract: The present disclosure relates to a downhole drilling tool that may include: an earth-boring drill bit including: a bit body; a shank coupled to the bit body; a strain puck removably coupled to the earth-boring drill bit, the strain puck including a strain gauge to collect data indicating a downhole force applied to the earth-boring drill bit during a drilling operation; and a plurality of blades disposed on exterior portions of the bit body, each blade having respective cutting elements disposed thereon.Type: ApplicationFiled: October 30, 2019Publication date: May 6, 2021Inventor: Bradley David Dunbar
-
Publication number: 20210131263Abstract: A downhole drilling tool comprises an earth-boring drill bit including a bit body and a shank coupled to the bit body. The drill bit includes a motion puck positioned in a cavity of the shank, wherein the motion puck includes a motion sensor to detect movement indicating a force applied to the earth-boring drill bit during a drilling operation. The drill bit includes a strain puck positioned in the cavity of the shank, wherein the strain puck includes a strain gauge to measure the force applied to the earth-boring drill bit during the drilling operation. The drill bit includes a plurality of blades disposed on exterior portions of the bit body, each blade having respective cutting elements disposed thereon.Type: ApplicationFiled: October 30, 2019Publication date: May 6, 2021Inventor: Bradley David Dunbar
-
Publication number: 20210062588Abstract: A clamp assembly device for connecting a rotating control device bearing assembly to a main body of a rotating control device. The device includes clamp members configured to retain the bearing assembly in place on the main body, a clamp actuator for driving clamping and unclamping of the clamp members and a lock pin controlled by a lock pin actuator. The lock pin actuator is configured to lock and unlock the clamp assembly device by moving the pin between locked and unlocked positions along an axis substantially parallel with the axis of rotation of the bearing assembly.Type: ApplicationFiled: April 25, 2019Publication date: March 4, 2021Inventors: Ronald James Downie, Joel Victor-David Dunbar
-
Patent number: 10920500Abstract: A drill bit nozzle assembly and drill bit including the same may include a conical or frustum contoured nozzle body. The nozzle body includes multiple movable closure elements circumferentially arranged to form an inlet orifice, a variable diameter outlet orifice, and a fluid a passage to transport fluid from the inlet orifice to the variable diameter outlet orifice. The nozzle assembly may further include an actuator configured to vary a diameter of the variable diameter outlet orifice based on a change of position of the movable closure elements.Type: GrantFiled: October 11, 2019Date of Patent: February 16, 2021Assignee: Halliburton Energy Services, Inc.Inventor: Bradley David Dunbar
-
Patent number: 10822945Abstract: Data is stored in a first storage device or second storage device, where the first storage device and second storage device are located in a borehole of a geologic formation, and where a value of a storage attribute associated with the first storage device is different than a value of a storage attribute associated with the second storage device. A value based on an ambient condition downhole in the borehole is determined. The data is stored in the first storage device, if the value based on the ambient condition is less than or equal to a threshold or the data is stored in the second storage device, if the value based on the ambient condition is greater than the threshold.Type: GrantFiled: June 6, 2019Date of Patent: November 3, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Bradley David Dunbar, Robert W Arfele, Douglas Bruce Caraway, John Leslie Wisinger, Jr.
-
Patent number: 10711527Abstract: Methods, devices, and systems include a nested drill bit assembly, including an inner drill bit nested within an opening of an outer drill bit. The inner drill bit is removably coupled to the outer drill bit and the inner drill bit being co-axially positioned within the outer drill bit and accessible from a first end of the outer drill bit.Type: GrantFiled: July 27, 2015Date of Patent: July 14, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Gustav Edward Lange, Bradley David Dunbar, Ludovic Delmar
-
Publication number: 20200165876Abstract: A drill bit can include a bit body having an upper portion, a central bore, and an adjustable inner gauge. The central bore can define a bore surface, and the bit body can include a plurality of fixed cutters formed on the upper portion. The adjustable inner gauge may be movably positioned within the bit body central bore to increase or decrease an exposed area of the bore surface for adjusting stability or steerability of the drill bit while forming the wellbore.Type: ApplicationFiled: August 17, 2017Publication date: May 28, 2020Applicant: Halliburton Energy Services, Inc.Inventor: Bradley David Dunbar
-
Patent number: 10487602Abstract: A well tool apparatus comprises a control arrangement configured to control response of the downhole tool by varying a bore-annulus pressure difference. The control arrangement includes a valve piston longitudinally slidable in a generally tubular controller housing that is in operation substantially co-axial with the wellbore, to open or close a valve port to a fluid flow connection between the drill strings interior and the tool. A latch mechanism is configured to latch the valve piston against movement in one axial direction, keeping the valve piston in an open or a closed condition. Unlatching of the valve piston requires displacement thereof in the other axial direction to a mode change position. A stay member is automatically displaceable under hydraulic actuation responsive to bore-annulus pressure differences above a trigger threshold value, to obstruct movement of the latched valve piston under hydraulic actuation to the mode change position.Type: GrantFiled: March 24, 2015Date of Patent: November 26, 2019Assignee: Halliburton Energy Services, Inc.Inventors: John Gerard Evans, Bradley David Dunbar, William Browning Bradford, David Wayne Cawthon, Jean-Pierre Lassoie
-
Patent number: 10472897Abstract: A drill bit may include a bit body, a plurality of blades on the bit body, and a plurality of cutting elements on the plurality of blades. The drill bit may also include an adjustable depth of cut controller (DOCC) located on a blade to provide depth of cut control for at least one of the plurality of cutting elements. Further, the drill bit may include a positioning unit coupled to the adjustable DOCC and configured to adjust the position of the DOCC relative to the cutting element based on a control signal from a control unit.Type: GrantFiled: March 25, 2015Date of Patent: November 12, 2019Assignee: Halliburton Energy Services, Inc.Inventors: Bradley David Dunbar, Seth Garrett Anderle, Gregory Christopher Grosz
-
Patent number: 10280688Abstract: Systems and methods are disclosed for a rotating superhard cutting element. The rotating cutting element includes a substrate comprising a rotating portion and a stable portion. The stable portion has a cavity and is configured to be fixed to a blade of a drill bit. The rotating cutting element further includes a retainer that rotatably secures the rotating portion of the substrate in the cavity of the stable portion of the substrate, and a cutting layer on the rotating portion of the substrate. The cutting layer has a plurality of cutting surfaces. One of the plurality of cutting surfaces has a property different from another one of the plurality of cutting surfaces. The cutting layer is configured to rotate with respect to the stable portion of the substrate and use one of the plurality of cutting surfaces based on a characteristic of a formation to be cut.Type: GrantFiled: January 26, 2015Date of Patent: May 7, 2019Assignee: Halliburton Energy Services, Inc.Inventors: Bradley David Dunbar, William Brian Atkins, Roddy Harwell
-
Publication number: 20180368128Abstract: A wireless RF data transmission system has at least one base station transmitting control information on a control channel and high speed data on at least one data channel. At least one subscriber station receives the control information and data channels, adjusting a modulation and/or coding of reception of the data in response to the control information. Preferably, the control information is transmitted using a more robust modulation, such as QPSK, than used to transmit the data, which is preferably transmitted using either 16, 64 or 256 QAM. Additionally, timing or header information for the data may be included on the control channel.Type: ApplicationFiled: August 28, 2018Publication date: December 20, 2018Inventors: Mark D. Reudink, Lee David Dunbar, Bruce C. Rothaar
-
Patent number: 10070423Abstract: A wireless RF data transmission system has at least one base station transmitting control information on a control channel and high speed data on at least one data channel. At least one subscriber station receives the control information and data channels, adjusting a modulation and/or coding of reception of the data in response to the control information. Preferably, the control information is transmitted using a more robust modulation, such as QPSK, than used to transmit the data, which is preferably transmitted using either 16, 64 or 256 QAM. Additionally, timing or header information for the date may be included on the control channel.Type: GrantFiled: July 7, 2017Date of Patent: September 4, 2018Assignee: NETGEAR, Inc.Inventors: Mark D. Reudink, Lee David Dunbar, Bruce C. Rothaar
-
Publication number: 20180195348Abstract: Methods, devices, and systems include a nested drill bit assembly, including an inner drill bit nested within an opening of an outer drill bit. The inner drill bit is removably coupled to the outer drill bit and the inner drill bit being co-axially positioned within the outer drill bit and accessible from a first end of the outer drill bit.Type: ApplicationFiled: July 27, 2015Publication date: July 12, 2018Applicant: Halliburton Energy Services, Inc.Inventors: Gustav Edward Lange, Bradley David Dunbar, Ludovic Delmar
-
Publication number: 20180045003Abstract: A well tool apparatus comprises a control arrangement configured to control response of the downhole tool by varying a bore-annulus pressure difference. The control arrangement includes a valve piston longitudinally slidable in a generally tubular controller housing that is in operation substantially co-axial with the wellbore, to open or close a valve port to a fluid flow connection between the drill strings interior and the tool. A latch mechanism is configured to latch the valve piston against movement in one axial direction, keeping the valve piston in an open or a closed condition. Unlatching of the valve piston requires displacement thereof in the other axial direction to a mode change position. A stay member is automatically displaceable under hydraulic actuation responsive to bore-annulus pressure differences above a trigger threshold value, to obstruct movement of the latched valve piston under hydraulic actuation to the mode change position.Type: ApplicationFiled: March 24, 2015Publication date: February 15, 2018Applicant: Halliburton Energy Services, Inc.Inventors: John Gerard Evans, Bradley David Dunbar, William Browning Bradford, David Wayne Cawthon, Jean-Pierre Lassoie
-
Publication number: 20180030786Abstract: A drill bit may include a bit body, a plurality of blades on the bit body, and a plurality of cutting elements on the plurality of blades. The drill bit may also include an adjustable depth of cut controller (DOCC) located on a blade to provide depth of cut control for at least one of the plurality of cutting elements. Further, the drill bit may include a positioning unit coupled to the adjustable DOCC and configured to adjust the position of the DOCC relative to the cutting element based on a control signal from a control unit.Type: ApplicationFiled: March 25, 2015Publication date: February 1, 2018Inventors: Bradley David DUNBAR, Seth Garrett ANDERLE, Gregory Christopher GROSZ