Patents by Inventor JOHN REDFERN

JOHN REDFERN 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).

  • Patent number: 12474089
    Abstract: A method includes flowing, in a closed loop geothermal well residing in a target subterranean zone, a first heat transfer working fluid and flowing, in the geothermal well, a second working fluid from the surface inlet to the downhole location of the geothermal well. The second working fluid resides upstream of the first heat transfer working fluid. The second working fluid includes a fluid density greater than a fluid density of the first heat transfer working fluid. The method also includes circulating, in the geothermal well, the second working fluid pushing, with the second working fluid, the first heat transfer working fluid toward a surface outlet of the geothermal well. The method also includes collecting energy from the mobilized first heat transfer working fluid received at the surface outlet of the geothermal well.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: November 18, 2025
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns, Vsevolod Zatonski
  • Publication number: 20250154938
    Abstract: Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.
    Type: Application
    Filed: January 15, 2025
    Publication date: May 15, 2025
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns
  • Publication number: 20250146714
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Application
    Filed: November 15, 2024
    Publication date: May 8, 2025
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Patent number: 12241660
    Abstract: Operational protocol sequences for recovering energy from a thermally productive formation are disclosed. Sealing, drilling, multiranging, power production and distribution techniques in predetermined sequences for well formation are utilized to recover energy regardless of thermal gradient variation, formation depth and permeability and other anomalies or impedances.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: March 4, 2025
    Assignee: Eavor Technologies Inc.
    Inventors: Matthew Toews, Bailey Schwarz, Derek Riddell, Paul Cairns, John Redfern, Andrew Curtis-Smith, Jonathan Hale, Peter Andrews
  • Patent number: 12228112
    Abstract: Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: February 18, 2025
    Assignee: Eavor Technologies Inc.
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns
  • Patent number: 12163696
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: December 10, 2024
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Publication number: 20240060685
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 22, 2024
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Patent number: 11808488
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: November 7, 2023
    Assignee: Eavor Technologies Inc.
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Publication number: 20230288099
    Abstract: A method includes flowing, in a closed loop geothermal well residing in a target subterranean zone, a first heat transfer working fluid and flowing, in the geothermal well, a second working fluid from the surface inlet to the downhole location of the geothermal well. The second working fluid resides upstream of the first heat transfer working fluid. The second working fluid includes a fluid density greater than a fluid density of the first heat transfer working fluid. The method also includes circulating, in the geothermal well, the second working fluid pushing, with the second working fluid, the first heat transfer working fluid toward a surface outlet of the geothermal well. The method also includes collecting energy from the mobilized first heat transfer working fluid received at the surface outlet of the geothermal well.
    Type: Application
    Filed: August 5, 2021
    Publication date: September 14, 2023
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns, Vsevolod Zatonski
  • Publication number: 20230018178
    Abstract: Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 19, 2023
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns
  • Patent number: 11460008
    Abstract: Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: October 4, 2022
    Assignee: Eavor Technologies Inc.
    Inventors: Matthew Toews, Bailey Schwarz, John Redfern, Paul Cairns
  • Publication number: 20220026112
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Application
    Filed: October 12, 2021
    Publication date: January 27, 2022
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Patent number: 11156386
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Grant
    Filed: July 27, 2019
    Date of Patent: October 26, 2021
    Assignee: Eavor Technologies Inc.
    Inventors: Paul Cairns, Matthew Toews, John Redfern
  • Patent number: 11125472
    Abstract: Fluid classes for use in energy recovery in well and geothermal environments for power production are disclosed. The fluids fall into the classes of fluids being capable of increasing thermodynamic efficiency of electricity and/or heat generation from a closed-loop geothermal system. Numerous methods are disclosed which exploit the thermodynamics of the fluids for optimum energy recovery.
    Type: Grant
    Filed: April 21, 2019
    Date of Patent: September 21, 2021
    Assignee: Eavor Technologies Inc.
    Inventors: Matthew Toews, Glenn Price, Paul Cairns, John Redfern, Jeff Smith
  • Publication number: 20210231109
    Abstract: Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.
    Type: Application
    Filed: November 26, 2020
    Publication date: July 29, 2021
    Inventors: MATTHEW TOEWS, BAILEY SCHWARZ, JOHN REDFERN, PAUL CAIRNS
  • Publication number: 20210003320
    Abstract: Operational protocol sequences for recovering energy from a thermally productive formation are disclosed.
    Type: Application
    Filed: June 26, 2020
    Publication date: January 7, 2021
    Inventors: MATTHEW TOEWS, BAILEY SCHWARZ, DEREK RIDDELL, PAUL CAIRNS, JOHN REDFERN, ANDREW CURTIS-SMITH, JONATHAN HALE, PETER ANDREWS
  • Publication number: 20200049380
    Abstract: A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in as direction opposite. to the first. In this manner temperature equilibration is attainable to mitigate maxima and minima to result in a substantially more uniform temperature of the working fluids in respective wells and the rock formation area there between. Specific operating protocol is disclosed having regard to the temperature control for maximizing thermal energy recovery.
    Type: Application
    Filed: July 27, 2019
    Publication date: February 13, 2020
    Inventors: PAUL CAIRNS, MATTHEW TOEWS, JOHN REDFERN
  • Publication number: 20190346181
    Abstract: Fluid classes for use in energy recovery in well and geothermal environments for power production are disclosed. The fluids fall into the classes of fluids being capable of increasing thermodynamic efficiency of electricity and/or heat generation from a closed-loop geothermal system. Numerous methods are disclosed which exploit the thermodynamics of the fluids for optimum energy recovery.
    Type: Application
    Filed: April 21, 2019
    Publication date: November 14, 2019
    Applicant: EAVOR TECHNOLOGIES INC.
    Inventors: MATTHEW TOEWS, GLENN PRICE, PAUL CAIRNS, JOHN REDFERN, JEFF SMITH
  • Publication number: 20190128567
    Abstract: A method and system for capturing geothermal energy. Injection and production well pairs in a geothermal zone are connected with a power generation apparatus between the production well of one well pair and the injection well of an adjacent well pair in a subterranean closed loop daisy chain configuration. Fluid circulated through the loop and the power generation apparatus recover subterranean heat energy. Specification is also disclosed in respect of application of the technology to repurpose an unused or suspended oilfield.
    Type: Application
    Filed: September 5, 2018
    Publication date: May 2, 2019
    Inventor: JOHN REDFERN