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.

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.

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.

公开(公告)号：US20220003459A1

公开(公告)日：2022-01-06

申请号：US16929284

申请日：2020-07-15

Applicant: EAVOR TECHNOLOGIES INC.

Inventor： MATTHEW TOEWS ,  PAUL CAIRNS ,  DEREK RIDDELL ,  ANDREW CURTIS-SMITH ,  JONATHAN HALE

IPC: F24T10/20 ,  E21B47/0228 ,  E21B7/04 ,  E21B43/30 ,  E21B36/00 ,  E21B33/138

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.

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

IPC: F24T10/13 ,  F03G7/04

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.

公开(公告)号：US20210325089A1

公开(公告)日：2021-10-21

申请号：US17126153

申请日：2020-12-18

Applicant: EAVOR TECHNOLOGIES INC.

Inventor： MATTHEW TOEWS ,  MICHAEL HOLMES ,  JONATHAN HALE ,  ANDREW CURTIS-SMITH ,  PETER ANDREWS ,  PAUL CAIRNS ,  ARIEL TORRE

IPC: F24T10/10 ,  E21B36/00 ,  E21B33/10 ,  F24T10/15

Abstract: Wellbore synthesis techniques are disclosed suitable for use in geothermal applications. Embodiments are provided where open hole drilled wellbores are sealed while drilling in sequenced operations with utilization of phase change materials to form an impervious layer at the wellbore/formation interface in high temperature applications. 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 heat transfer surfaces for maximizing thermal transfer to a circulating working fluid. Formulations for the working and drilling fluids are disclosed.

公开(公告)号：US20250034947A1

公开(公告)日：2025-01-30

申请号：US18919005

申请日：2024-10-17

Applicant: Eavor Technologies Inc.

Inventor： Matthew Toews ,  Michael Holmes ,  Ariel Torre ,  Aleksandr Vetsak ,  Mark Hodder

IPC: E21B7/18 ,  E21B3/02 ,  E21B7/04 ,  E21B7/14 ,  E21B17/00 ,  E21B36/00 ,  E21B43/26

Abstract: A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250 degrees Celsius. While drilling, a drilling fluid is flowed at a temperature at the rock face such that a difference between the inherent temperature of the rock adjacent the rock face and the temperature of the drilling fluid at the rock face is at least 100 degrees Celsius.

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

IPC: F24T10/20 ,  F24T50/00

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.

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

IPC: F24T10/10 ,  F24T10/40 ,  F24T50/00

CPC classification number: F24T10/10 ,  F24T10/40 ,  F24T50/00

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.

公开(公告)号：US20230228155A1

公开(公告)日：2023-07-20

申请号：US18114798

申请日：2023-02-27

Applicant: Eavor Technologies Inc.

Inventor： Matthew Toews ,  Michael Holmes ,  Ariel Torre ,  Aleksandr Vetsak ,  Mark Hodder

IPC: E21B7/18 ,  E21B7/14 ,  E21B7/04 ,  E21B3/02 ,  E21B36/00 ,  E21B43/26 ,  E21B17/00

CPC classification number: E21B7/18 ,  E21B3/02 ,  E21B7/14 ,  E21B7/046 ,  E21B17/006 ,  E21B36/001 ,  E21B43/261

Abstract: A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250° C. While drilling, a drilling fluid is flowed at a temperature at the rock face such that a difference between the inherent temperature of the rock adjacent the rock face and the temperature of the drilling fluid at the rock face is at least 100° C.