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公开(公告)号：US20240301764A1
公开(公告)日：2024-09-12
申请号：US18613934
申请日：2024-03-22
Applicant: Eavor Technologies Inc.
Inventor： Matthew Toews , Paul Cairns , Peter Andrews , Andrew Curtis-Smith , Jonathan Hale
IPC: E21B33/138 , C09K8/08 , C09K8/40 , C09K8/42 , C09K8/46 , E21B43/30 , F24T10/00 , F24T10/10 , F24T10/13 , F24T50/00
CPC classification number: E21B33/138 , C09K8/08 , C09K8/40 , C09K8/424 , C09K8/46 , E21B43/305 , F24T10/10 , F24T10/13 , F24T50/00 , F24T2010/50 , F24T2010/53 , Y02E10/10 , Y02W30/91
Abstract: Wellbore synthesis techniques are disclosed suitable for use in geothermal applications. Embodiments are provided where open hole drilled wellbores are sealed while drilling to form an impervious layer at the wellbore/formation interface. The techniques may be chemical, thermal, mechanical, biological and are fully intended to irreversibly damage the formation in terms of the permeability thereof. With the permeability negated, the wellbore may be used to create a closed loop surface to surface geothermal well operable in the absence of well casing for maximizing thermal transfer to a circulating working fluid. Formulations for the working and drilling fluids are disclosed.
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公开(公告)号：US20240110731A1
公开(公告)日：2024-04-04
申请号：US18521672
申请日：2023-11-28
Applicant: EAVOR TECHNOLOGIES INC.
Inventor： Matthew Toews , Paul Cairns , Derek Riddell , Andrew Curtis-Smith , Jonathan Hale
IPC: F24T10/20 , E21B7/04 , E21B33/138 , E21B36/00 , E21B43/30 , E21B47/0228
CPC classification number: F24T10/20 , E21B7/04 , E21B33/138 , E21B36/001 , E21B43/305 , E21B47/0228
Abstract: Closed loop wellbore configurations with unrestricted geometry for accommodating irregular or challenging thermal gradients within a thermally productive formation are disclosed. A working fluid is utilized in the loop for extraction of thermal energy there from. The loop and the unrestricted geometry are achieved using magnetic ranging of independent drilling operations which intersect from an inlet well and outlet well to form an interconnecting segment. In conjunction with the directional drilling, conditioning operations are incorporated to condition the rock face, cool the entire system, activate the wellbore for treatment to optimize thermal transfer inter alia. The significant degree of freedom in wellbore configuration is further optimized by the absence of mechanical impediments such as casing or liners in the heat transfer areas.
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公开(公告)号：US11242726B2
公开(公告)日：2022-02-08
申请号：US16423020
申请日：2019-05-26
Applicant: EAVOR TECHNOLOGIES INC.
Inventor： Matthew Toews , Paul Cairns , Peter Andrews , Andrew Curtis-Smith , Jonathan Hale
IPC: E21B33/138 , C09K8/50 , E21B43/30 , F24T10/10 , C09K8/08 , C09K8/40 , C09K8/42 , C09K8/46 , F24T10/13 , F24T50/00 , F24T10/00
Abstract: Wellbore synthesis techniques are disclosed suitable for use in geothermal applications. Embodiments are provided where open hole drilled wellbores are sealed while drilling to form an impervious layer at the wellbore/formation interface. The techniques may be chemical, thermal, mechanical, biological and are fully intended to irreversibly damage the formation in terms of the permeability thereof. With the permeability negated, the wellbore may be used to create a closed loop surface to surface geothermal well operable in the absence of well casing for maximizing thermal transfer to a circulating working fluid. Formulations for the working and drilling fluids are disclosed.
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公开(公告)号：US11156386B2
公开(公告)日：2021-10-26
申请号：US16524017
申请日：2019-07-27
Applicant: EAVOR TECHNOLOGIES INC.
Inventor： Paul Cairns , Matthew Toews , John Redfern
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.
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公开(公告)号：US12163696B2
公开(公告)日：2024-12-10
申请号：US18501582
申请日：2023-11-03
Applicant: Eavor Technologies Inc.
Inventor： Paul Cairns , Matthew Toews , John Redfern
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.
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Patent Agency Ranking
公开(公告)号：US20240060685A1
公开(公告)日：2024-02-22
申请号：US18501582
申请日：2023-11-03
Applicant: Eavor Technologies Inc.
Inventor： Paul Cairns , Matthew Toews , John Redfern
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.
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公开(公告)号：US11808488B2
公开(公告)日：2023-11-07
申请号：US17499415
申请日：2021-10-12
Applicant: Eavor Technologies Inc.
Inventor： Paul Cairns , Matthew Toews , John Redfern
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.
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公开(公告)号：US20220026112A1
公开(公告)日：2022-01-27
申请号：US17499415
申请日：2021-10-12
Applicant: Eavor Technologies Inc.
Inventor： Paul Cairns , Matthew Toews , John Redfern
IPC: F24T10/13
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.
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公开(公告)号：US20240035710A1
公开(公告)日：2024-02-01
申请号：US18017383
申请日：2021-07-21
Applicant: EAVOR TECHNOLOGIES INC.
Inventor： Matthew Toews , Paul Cairns
CPC classification number: F24T10/20 , F24T50/00 , F24T2010/50
Abstract: Methods and system for geothermal energy harvesting using both conductive and convective heat transfer are provided. A geothermal well is provided with inlet and outlet wellbores and an interconnecting wellbore therebetween, the interconnecting wellbore fluidly connected to a plurality of fluid conduits, such as fractures. The interface of the wellbore and fractures with the surrounding earth may be impermeably sealed with a sealant. A heat transfer fluid is circulated throughout the system to extract thermal energy from the earth by conduction, as well as by convection. By providing the plurality of fluid conduits and by utilizing convective as well as conductive heat transfer, the rate of energy extraction may be increased.
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公开(公告)号：US20230288099A1
公开(公告)日：2023-09-14
申请号：US18019645
申请日：2021-08-05
Applicant: Matthew TOEWS , Bailey SCHWARZ , John REDFERN , Paul CAIRNS , Vsevolod ZATONSKI , Eavor Technologies Inc.
Inventor： Matthew Toews , Bailey Schwarz , John Redfern , Paul Cairns , Vsevolod Zatonski
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.
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