Granted Patent
B2
US 12,560,049 · App. 18/613,934 · Granted Feb 24, 2026
Method for forming high efficiency geothermal wellbores
Inventors:
Matthew Toews (Calgary, CA); Paul Cairns (Calgary, CA); Peter Andrews (Calgary, CA); Andrew Curtis-Smith (Calgary, CA); Jonathan Hale (Calgary, CA)
Assignee:
Eavor Technologies Inc.
E21B33/138C09K8/08C09K8/40C09K8/424C09K8/46E21B43/305F24T10/10F24T10/13F24T50/00F24T2010/50F24T2010/53Y02E10/10Y02W30/91
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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.
Claims (18)
1 . A method comprising:
introducing a geothermal working fluid into a lateral wellbore of a geothermal well extending into a formation of a subsurface heat recovery zone, an interface of the formation of the lateral wellbore sealed absent casing prior to the introducing of the geothermal working fluid; and
after introducing the geothermal working fluid, maintaining the interface sealed absent casing by circulating a sealant in a closed loop through the lateral wellbore.
2 . The method of claim 1 , wherein the sealant comprises a sealant configured to seal the interface by a chemical reaction.
3 . The method of claim 2 , wherein the chemical reaction damages the formation.
4 . The method of claim 2 , wherein the chemical reaction comprises precipitation of a solid.
5 . The method of claim 1 , wherein the sealant is configured to penetrate into the formation.
6 . The method of claim 1 , wherein the lateral wellbore extends from a surface wellbore extending from the terranean surface.
7 . The method of claim 6 , wherein the surface wellbore is an inlet wellbore and wherein the lateral wellbore is fluidly connected to an outlet wellbore extending to the terranean surface.
8 . The method of claim 1 , wherein the sealant comprises an alkali silicate.
9 . The method of claim 1 , wherein the subsurface heat recovery zone is a basement formation.
10 . The method of claim 1 , wherein the sealant circulated in the closed loop through the lateral wellbore after introducing the geothermal working fluid is a component of the geothermal working fluid.
11 . The method of claim 1 , wherein the sealant circulated in the closed loop through the lateral wellbore after introducing the geothermal working fluid comprises a thermally conductive additive.
12 . The method of claim 1 , further comprising:
creating the closed loop at least in part by sealing, during a drilling process, the interface absent casing; and
after creating the closed loop by sealing the interface absent casing, displacing a drilling fluid of the drilling process from the lateral wellbore with the geothermal working fluid.
13 . The method of claim 12 , wherein the sealant circulated in the closed loop through the lateral wellbore after introducing the geothermal working fluid is a second sealant and wherein the creating the closed loop by sealing is with a first sealant that is a component of the drilling fluid.
14 . The method of claim 12 , wherein the creating the closed loop is further at least in part by forming a seal of at least a portion of the wellbore of the well with casing.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 26, 2024
From: TOEWS, MATTHEW; CAIRNS, PAUL; ANDREWS, PETER; CURTIS-SMITH, ANDREW; HALE, JONATHAN
To: EAVOR TECHNOLOGIES INC.
Reel/Frame 067847/0296 →
Continuity (5)
Provisional Application
62714674
· Aug 4, 2018
Provisional Application
62693950
· Jul 4, 2018
References Cited (218)
US 3817038A
· Paull et al.
· 1974
[cited by applicant]
US 4060988A
· Arnold
· 1977
[cited by applicant]
US 4137720A
· Rex
· 1979
[cited by applicant]
US 4538673A
· Partin et al.
· 1985
[cited by applicant]
US 4665985A
· Berrod et al.
· 1987
[cited by applicant]
US 4722397A
· Sydansk et al.
· 1988
[cited by applicant]
US 5510442A
· Bambury et al.
· 1996
[cited by applicant]
US 5515679A
· Shulman
· 1996
[cited by applicant]
US 5992507A
· Peterson
· 1999
[cited by applicant]
US 6000471A
· Langset
· 1999
[cited by applicant]
US 6035949A
· Altschuler et al.
· 2000
[cited by applicant]
US 6059036A
· Chatterji et al.
· 2000
[cited by applicant]
US 6073448A
· Lozada
· 2000
[cited by applicant]
US 6102120A
· Chen et al.
· 2000
[cited by applicant]
US 6230804B1
· Mueller et al.
· 2001
[cited by applicant]
US 6247313B1
· Moe
· 2001
[cited by applicant]
US 6301894B1
· Halff
· 2001
[cited by applicant]
US 6626243B1
· Go Boncan
· 2003
[cited by applicant]
US 6668554B1
· Brown
· 2003
[cited by applicant]
US 6679326B2
· Zakiewicz
· 2004
[cited by applicant]
US 6708494B1
· Hamann
· 2004
[cited by applicant]
US 7146823B1
· Wiggs
· 2006
[cited by applicant]
US 7251938B1
· Bond
· 2007
[cited by applicant]
US 7740068B2
· Ballard
· 2010
[cited by applicant]
US 8020382B1
· Zakiewicz
· 2011
[cited by applicant]
US 8307896B2
· Sarria
· 2012
[cited by applicant]
US 8381523B2
· Eli et al.
· 2013
[cited by applicant]
US 8616000B2
· Parella
· 2013
[cited by applicant]
US 8672058B2
· Tommie et al.
· 2014
[cited by applicant]
US 8708046B2
· Montgomery
· 2014
[cited by applicant]
US 8822386B2
· Quintero et al.
· 2014
[cited by applicant]
US 8991488B2
· Loveday
· 2015
[cited by applicant]
US 9121393B2
· Schwarck
· 2015
[cited by applicant]
US 9212304B2
· McDonald
· 2015
[cited by applicant]
US 9458023B2
· McDonald et al.
· 2016
[cited by applicant]
US 9556856B2
· Stewart et al.
· 2017
[cited by applicant]
US 9845423B2
· Franzt et al.
· 2017
[cited by applicant]
US 20070245729A1
· Mickelson
· 2007
[cited by applicant]
US 20090272545A1
· Bour
· 2009
[cited by examiner]
US 20090286697A1
· Shaarpour
· 2009
[cited by applicant]
US 20100126722A1
· Cornelissen et al.
· 2010
[cited by applicant]
US 20100152070A1
· Ghassemzadeh
· 2010
[cited by applicant]
US 20110048005A1
· McHargue
· 2011
[cited by applicant]
US 20110061382A1
· Stern
· 2011
[cited by examiner]
US 20110100002A1
· Muir et al.
· 2011
[cited by applicant]
US 20110224942A1
· Kidwell
· 2011
[cited by applicant]
US 20110247816A1
· Carter, Jr.
· 2011
[cited by examiner]
US 20120080163A1
· Hoffman
· 2012
[cited by applicant]
US 20120174581A1
· Vaughan
· 2012
[cited by applicant]
US 20130075089A1
· Bour et al.
· 2013
[cited by applicant]
US 20130255258A1
· Loveday
· 2013
[cited by applicant]
US 20140133519A1
· Freitag et al.
· 2014
[cited by applicant]
US 20140326668A1
· Loveday
· 2014
[cited by applicant]
US 20150198019A1
· Affholter et al.
· 2015
[cited by applicant]
US 20160040518A1
· Potapenko et al.
· 2016
[cited by applicant]
US 20170130703A1
· Muir et al.
· 2017
[cited by applicant]
US 20170211849A1
· Muir et al.
· 2017
[cited by applicant]
US 20180291880A1
· Cairns et al.
· 2018
[cited by applicant]
US 20190128567A1
· Redfern
· 2019
[cited by applicant]
US 20190154010A1
· Toews
· 2019
[cited by applicant]
US 20200408041A1
· Riddell et al.
· 2020
[cited by applicant]
US 20250146714A1
· Cairns et al.
· 2025
[cited by applicant]
AU 2017206053A1
· 2018
[cited by applicant]
CA 3013374A1
· 2019
[cited by applicant]
CA 3041002A1
· 2019
[cited by applicant]
CA 3038294A1
· 2019
[cited by applicant]
CN 87107394A
· 1988
[cited by applicant]
CN 1048738A
· 1991
[cited by applicant]
CN 101027480A
· 2007
[cited by applicant]
CN 201593889U
· 2010
[cited by applicant]
CN 102093859A
· 2011
[cited by applicant]
CN 102758595A
· 2012
[cited by applicant]
CN 103362442A
· 2013
[cited by applicant]
CN 203978273U
· 2014
[cited by applicant]
CN 106246142A
· 2016
[cited by applicant]
CN 107642329A
· 2018
[cited by applicant]
CN 108291437A
· 2018
[cited by applicant]
EP 0875657A2
· 1998
[cited by applicant]
EP 1435428A2
· 2004
[cited by applicant]
FR 3056288A3
· 2018
[cited by applicant]
GB 2097448A
· 1982
[cited by applicant]
GB 2518442A
· 2015
[cited by applicant]
JP H04203195A
· 1992
[cited by applicant]
JP H0637827B2
· 1994
[cited by applicant]
JP 3091479B2
· 2000
[cited by applicant]
JP 2014051856A
· 2014
[cited by applicant]
JP 2016118078A
· 2016
[cited by applicant]
JP 6848006B2
· 2021
[cited by applicant]
KR 1020090054856A
· 2009
[cited by applicant]
KR 101403687B1
· 2014
[cited by applicant]
RU 2064141C1
· 1996
[cited by applicant]
RU 2670292C1
· 2018
[cited by applicant]
WO WO1998022760A1
· 1998
[cited by applicant]
WO WO2003106585A1
· 2003
[cited by applicant]
WO WO2011053884A1
· 2011
[cited by applicant]
WO WO2012068279A2
· 2012
[cited by applicant]
WO WO2012082962A1
· 2012
[cited by applicant]
WO WO2014081911A2
· 2014
[cited by applicant]
WO WO2014114510A2
· 2014
[cited by applicant]
WO WO2014182732A1
· 2014
[cited by applicant]
WO WO2015030601A1
· 2015
[cited by applicant]
WO WO2015134974A1
· 2015
[cited by applicant]
WO WO2015192011A1
· 2015
[cited by applicant]
WO WO2016091969A1
· 2016
[cited by applicant]
WO WO2017009652A1
· 2017
[cited by applicant]
WO WO2017053884A1
· 2017
[cited by applicant]
WO WO2017120499A1
· 2017
[cited by applicant]
WO WO2017146712A1
· 2017
[cited by applicant]
WO WO2018112610A1
· 2018
[cited by applicant]
WO WO2019157341A1
· 2019
[cited by applicant]
Badalyan et al., “Laboratory Study on Formation Damage in Geothermal Reservoirs Due to Fines Migration,” Proceedings World Geothermal Congress, Apr. 2015, 7 pages.
[cited by applicant]
Barrios et al, “Acid Stimulation of Geothermal reservoirs,” Short Course on Geothermal Development and Geothermal Wells, organized by UNU-GTP and LaGeo, Mar. 11-17, 2012, 12 pages.
[cited by applicant]
Bauer et al., “High Temperature Plug Formation with Silicates,” presented at the Thirtieth Workshop on Geothermal Reservoir Engineering, Stanford University, Jan. 31-Feb. 2, 2005, 8 pages.
[cited by applicant]
Bergosh et al., “Mechanisms of Formation Damage in Matrix Permeability Geothermal Wells,” Conference: International Geothermal Drilling and Completions Technology Conference, Jan. 21, 1981, 74 pages.
[cited by applicant]
Communication Pursuant to Article 94 (3) EPC issued in European Appln. No. 19830007.1, mailed on Oct. 1, 2021, 8 pages.
[cited by applicant]
Cui et al., “Geothermal Exploitation from hot dry rocks via recycling heat transmission in a horizontal well” Energy, vol. 128, 366-377, 12 pages.
[cited by applicant]
International Search Report and Written Opinion in International Appln. No. PCT/CA2019/000076, dated Jul. 25, 2019, 12 pages.
[cited by applicant]
Kuan, “Rope Core Drilling Technology,” Metallurgical Industry United Nations, Jan. 31, 2013, pp. 162-166 (with Machine translation).
[cited by applicant]
Mortensen, “Hot Dry Rock: A New Geothermal Energy Source,” Energy, Oct. 1978, 3(5):639-644.
[cited by applicant]
Noorollahi et al., “Three dimensional modeling of heat extraction from abandoned oil well for application in sugarcane industry in Ahvaz—Southern Iran.” Proceedings of the World Geothermal Congress, Apr. 2015, 11 pages.
[cited by applicant]
Office Action in Australian Appln. No. 2019203681, mailed on Aug. 16, 2024, 6 pages.
[cited by applicant]
Office Action in Chinese Appln. No. 202210747663.4, mailed on Jun. 6, 2024, 11 pages (with Machine translation).
[cited by applicant]
Office Action in Chinese Appln. No. 202210747663.4, mailed on Mar. 1, 2024, 33 pages (with Machine translation).
[cited by applicant]
Office Action in Chinese Appln. No. 202210747663.4, mailed on Sep. 28, 2023, 42 pages (with Machine translation).
[cited by applicant]
Office Action in Colombia Appln. No. 20-15501, mailed on Jan. 31, 2023, 6 pages.
[cited by applicant]
Office Action in Indian Appln. No. 202225043232, Oct. 11, 2022, 6 pages (with English translation).
[cited by applicant]
Office Action in Indonesia Appln. No. P00201904638, mailed on Nov. 18, 2022, 4 pages (with English translation).
[cited by applicant]
Office Action issued in African Regional Appln. No. AP/P/2020/012564, mailed on Jun. 23, 2022, 6 pages.
[cited by applicant]
Office Action issued in Chinese Appln. No. 201910593698.5, mailed on Mar. 20, 2021, 19 pages (With English Translation).
[cited by applicant]
Office Action issued in Chinese Appln. No. 201910593698.5, mailed on Nov. 17, 2021, 22 pages (With English Translation).
[cited by applicant]
Office Action issued in Gulf Cooperation Council Appln. No. GC 2019-37842, mailed on Jun. 26, 2020, 7 pages.
[cited by applicant]
Office Action issued in Gulf Cooperation Council Appln. No. GC 2019-37842, mailed on Nov. 16, 2021, 5 pages.
[cited by applicant]
Office Action issued in Indian Appln. No. 201924020812, mailed on Jan. 1, 2022, 7 pages (With English Translation).
[cited by applicant]
Office Action issued in Japanese Appln. No. 2019-102547, mailed on Jun. 29, 2020, 11 pages (With English Translation).
[cited by applicant]
Office Action issued in Japanese Appln. No. 2019-102547, mailed on Nov. 2, 2020, 9 pages (With English Translation).
[cited by applicant]
Office Action issued in New Zealand Appln. No. 764529, mailed on Apr. 8, 2021, 2 pages.
[cited by applicant]
Office Action issued in New Zealand Appln. No. 764529, mailed on Sep. 9, 2020, 5 pages.
[cited by applicant]
Office Action issued in Singapore Appln. No. 11202005041V, mailed on Nov. 15, 2021, 8 pages.
[cited by applicant]
Office Action issued in Singapore Appln. No. 11202005041V, mailed on Oct. 11, 2020, 8 pages.
[cited by applicant]
Search Report issued in Iceland Appln. No. 202000873, mailed on Aug. 5, 2020, 2 pages.
[cited by applicant]
Supplemental European Search Report issued in European Appln. No. 19830007.1, mailed on Dec. 18, 2020, 5 pages.
[cited by applicant]
Tchistiakov, “Physico-Chemical Aspects of Clay Migration and Injectivity Decrease of Geothermal Clastic Reservoirs,” Proceedings World Geothermal Congress 2000, May 28-Jun. 10, 2000, 9 pages.
[cited by applicant]
Templeton et al., “Abandoned Oil/Gas Wells as Sustainable Sources of Renewable Energy.” Proc. 23rd World Mining Congress, 2013, 10 pages.
[cited by applicant]
You et al., “New Laboratory Method to Assess Formation Damage in Geothermal Wells,” SPE European Formation Damage Conference and Exhibition, Jun. 3-5, 2015, 21 pages.
[cited by applicant]
Energy.mit.edu [online] “The Future of Geothermal Energy Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century,” Nov. 2006, retrieved from URL<https://energy.mit.edu/wp-content/uploads/200…
[cited by applicant]
Esmap.org [online] “Geothermal handbook: Planning and Financing Power Generation,” 2012, retrieved from URL<https://www.esmap,org/sites/esmap.orq/files/Documentlibrary/FINAL_Geothermal%20Handbook_TR002-12_Reduced.pdf>, …
[cited by applicant]
Examination Report in Singapore Appln. No. 11202005044R, mailed on Jan. 2, 2021, 3 pages.
[cited by applicant]
Extended European Search Report for European Appln. No. 24195394.2, mailed on Mar. 10, 2025, 14 pages.
[cited by applicant]
Gulf Cooperation Council Examination Report in GCC Appln. No. GC 2019-38099, mailed on Apr. 15, 2021, 5 pages.
[cited by applicant]
International Preliminary Report on Patentability in International Appln. No. PCT/CA2019/000111, mailed on Feb. 16, 2021, 5 pages.
[cited by applicant]
International Search Report and Written Opinion in International Appln. No. PCT/CA2019/000111, mailed on Oct. 10, 2019, 7 pages.
[cited by applicant]
Lunis et al., “Geothermal Direct Use Engineering and Design Guidebook,” United States Department of Energy, 1991, 152.
[cited by applicant]
Office Action in African Regional Appln. No. 2020/012565, mailed on Sep. 6, 2022, 6 pages.
[cited by applicant]
Office Action in Argentina Appln. No. 20190102234, mailed on Sep. 29, 2022, 4 pages.
[cited by applicant]
Office Action in Australian Appln. No. 2021203166, mailed on Sep. 28, 2022, 4 pages.
[cited by applicant]
Office Action in Chinese Appln. No. 201910728135.2, mailed on Apr. 18, 2025, 17 pages (with English translation).
[cited by applicant]
Office Action in Chinese Appln. No. 201910728135.2, mailed on Jul. 14, 2021, 27 pages (With English Translation).
[cited by applicant]
Office Action in Chinese Appln. No. 201910728135.2, mailed on Nov. 24, 2021, 17 pages (With English Translation).
[cited by applicant]
Office Action in Chinese Appln. No. 201910728135.2, mailed on Oct. 16, 2020, 21 pages (With English Translation).
[cited by applicant]
Office Action in Eurasian Appln. No. 202190529, mailed on Apr. 13, 2021, 5 pages (With English Translation).
[cited by applicant]
Office Action in European Appln. No. 19188962.5, mailed on Jan. 29, 2024, 5 pages.
[cited by applicant]
Office Action in European Appln. No. 19188962.5, mailed on Jun. 27, 2023, 13 pages.
[cited by applicant]
Office Action in Korean Appln. No. 1020207018946, mailed on Aug. 12, 2022, 15 pages (With English Translation).
[cited by applicant]
Office Action in Mexico Appln. No. 2019/009389, mailed on Nov. 11, 2022, 3 pages.
[cited by applicant]
Office Action in Mexico Appln. No. 2019009389, mailed on Mar. 15, 2023, 10 pages (with Machine translation).
[cited by applicant]
Office Action in U.S. Appl. No. 17/499,415, mailed on Oct. 7, 2022, 24 pages.
[cited by applicant]