WO2003012295A1 - Geothermal power generation - Google Patents

Geothermal power generation Download PDF

Info

Publication number
WO2003012295A1
WO2003012295A1 PCT/US2001/023477 US0123477W WO03012295A1 WO 2003012295 A1 WO2003012295 A1 WO 2003012295A1 US 0123477 W US0123477 W US 0123477W WO 03012295 A1 WO03012295 A1 WO 03012295A1
Authority
WO
WIPO (PCT)
Prior art keywords
well bore
water
well
rock strata
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2001/023477
Other languages
French (fr)
Inventor
Albert H. Halff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US09/569,389 priority Critical patent/US6301894B1/en
Application filed by Individual filed Critical Individual
Priority to NZ525544A priority patent/NZ525544A/en
Priority to JP2003517451A priority patent/JP2004522071A/en
Priority to CA002425480A priority patent/CA2425480A1/en
Priority to EP01957256A priority patent/EP1409870A4/en
Priority to PCT/US2001/023477 priority patent/WO2003012295A1/en
Priority to PL01361021A priority patent/PL361021A1/en
Publication of WO2003012295A1 publication Critical patent/WO2003012295A1/en
Priority to IS6774A priority patent/IS6774A/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G4/00—Devices for producing mechanical power from geothermal energy
    • F03G4/074—Safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T2010/50—Component parts, details or accessories
    • F24T2010/53—Methods for installation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Definitions

  • the present invention relates to a geothermal power generations system and more particularly to an improved geothermal power generation system in which the water in the hot rock strata is not used and water from an outside source is used and can be recycled.
  • Geothermal power generation systems have been used for years.
  • the usual system comprises drilling a well into a hot rock strata containing hot water. If the strata is dry and hot, then water may be pumped into the well and into the hot rock strata.
  • the hot rock strata either contains hot water or will heat the water that is pumped in until it reaches a temperature and pressure that exceeds the conditions necessary for the formation of steam.
  • the hot water flows or is pumped out of the well and when the pressure is released the hot water and steam are separated and the steam is used to operate a turbine that turns an electrical generator or some other mechanism.
  • the generator may be connected to a power grid for transport of the electricity to the point of use or the power may be used on site.
  • the ground water may require treatment before it is returned to the hot rock strata. It has been found that in current geothermal power generation systems the natural water or the water that is pumped into the hot rock strata is highly contaminated. The water is generally high in solids and may contain scaling or corrosive chemicals, or both and requires treatment before it can be returned to the hot rock strata. After the steam is used to turn a turbine and the steam condensed to its water phase, the resulting water is contaminated and requires treatment before passage through the piping and processing basins and before it can be returned to the hot rock strata.
  • the present invention overcomes these difficulties and has for one of its objects the provision of an improved geothermal generation system in which the water obtaining heat from the hot rock strata does not become contaminated so that it can be recycled, does not require chemical treatment beyond that used in standard boiler water treatment, and is economical in the amount of water used.
  • Another object of the present invention is the provision of an improved geothermal power generation system in which the turbine turning a generator or other mechanism that is to be powered by the steam needed not be located near the input well that is used to receive water into the ground and can be at a location remote from that well.
  • Another object of the present invention is the provision of an improved geothermal power generation system in which the system is more efficient.
  • Another object of the present invention is the provision of an improved geothermal power generation system in which the system is easy to install because the wells can be drilled by horizontal well drilling techniques in common use in the oil industry.
  • the improved geothermal power generation system is simple to use.
  • Another object of the present invention is that the system is maintained without withdrawing water from the strata so that the pressure in the strata is maintained.
  • Fig. 1 is a diagrammatic view of the geothermal power generation system using a
  • FIG. 2 is a diagrammatic view of the geothermal power system combining the inlet and outlet in a single well.
  • the geothermal power generation system of the present invention comprises an input well 1 which is sunk into the ground 2 through the surface 3 until it strikes the hot rock layer or strata 4 in the ground 2.
  • an output well 5 is also formed which penetrates the surface 3 and also extends into the hot rock strata 4.
  • the well is turned from vertical to horizontal 6 and is drilled through the hot rock strata 4 and when adequate distance for heating the water is reached, the well bore is turned to the vertical and drilled until it reaches the surface.
  • the input well 1, the horizontal well bore 6 ⁇ and the output well 5 form a continuous path from the surface, down to the hot rock strata, up through the overlying material and reaching the surface through well 5.
  • the well bore 6 is shown as being horizontal. However, it will be understood that the well bore 6 may have a different orientation if desired. As shown in the drawing, more than one horizontal well can be drilled from a single vertical well.
  • a generator turbine assembly 10 or some other mechanism that is to be operated by steam, is located near the output well 5 and is connected to the output well 5 so that steam leaving the output well 5 will operate
  • the generator turbine assembly 10 or similar mechanism to produce power or perform some other function.
  • the well bore 6 is lined and/or made of material that resists corrosion 7 so that the water/steam does not come into contact with the hot rock strata 4.
  • the wells 1 and 5 and the well bore 6 may be cemented in place in accordance with the standard oil and water well practice. Hence the water/steam remains clean and can be recycled after it operates the generator turbine assembly and no water is wasted.
  • the input well 1 and the output well 5 also lined with non-corrosive casing 8 and 9, respectively, and the casing cemented in place, so that when the water enters the input well 1 it does not come into contact with the ground rock 2 and is not contaminated and when the steam exits from the output well 5, it will not become contaminated since it will not come into contact with the ground rock 2.
  • the water/steam remains clean and can be recycled without danger of contamination.
  • the system of the present invention saves water since the water need not be discarded and saves the expensive treatment required if contaminated ground water is circulated through the system.
  • the present invention permits the output well 5 to be located at a place remote from the input well 1.
  • the outlet well 5 can be built close to the generator turbine assembly 10. If for some reason it is not feasible for the input well 1 to be located near the generator turbine assembly 10 it can be dug at a location remote from the input well 1 since the well bore 6 may be of any desired length provided that it mostly is located in the hot rock strata, and as a minimum, needs to be long enough to heat the water to steam, without adversely affecting efficiency and operation of the system of the present invention.
  • the present invention provides an improved geothermal power generation system in which the water entering the hot rock strata is not contaminated so that it can be recycled, in which the generator turbine or other mechanism that is powered by the steam need not be located near the input well that is used to receive water into the ground and can be at a location remote from that well, which will not waste water,
  • FIG. 2 A variation of the system described above is shown in Figure 2. All of the element of the System shown in Figure 1 are present. The same results are accomplished with a single vertical well and one or more horizontal wells. The water is returned to the horizontal reach of the well with a tubing that extends down the casing and discharges at the end of the casing. The water is converted to steam as it flows back out the single well and hence to the turbine.
  • the treated water may be at either end of the hot water let or distributed along all or part of the hot water leg.
  • hot legs there be one or more hot legs.
  • the hot legs may all operate at the same time or they may be used in sequence with one hot leg in operation while the other legs are heating up until the other legs are ready and are sequentially put into service.
  • the hot leg is shown as being level, but it may slope up or down. The slope may be changed in order to improve the position in the hot rock strata.
  • the hot leg may require cleaning at infrequent intervals. If required, the water inlet pipe is removed and a cleaning mechanism is run into or through the line. This loosens the objectionable material, which is usually scale. The debris can then be pushed out of the pipe

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

A geothermal power generation system having an input well (1) extending from the surface (3) into a hot rock strata (4) and an output well (5) spaced away from an input well extending from the surface into the hot rock strata. The input and output wells extend into the hot rock strata. A horizontal bore (6) connects the two wells together. The bore is located in the hot rock strata and consists of a casing (8,9) alone or a casing and a backfill between the casing and the hole. Alternatively, the system may consist of only one vertical well and a horizontal bore extending into the hot rock strata and a pipe that returns the water into the horizontal bore.

Description

GEOTHERMAL POWER GENERATION
Background
The present invention relates to a geothermal power generations system and more particularly to an improved geothermal power generation system in which the water in the hot rock strata is not used and water from an outside source is used and can be recycled. Geothermal power generation systems have been used for years. The usual system comprises drilling a well into a hot rock strata containing hot water. If the strata is dry and hot, then water may be pumped into the well and into the hot rock strata. The hot rock strata either contains hot water or will heat the water that is pumped in until it reaches a temperature and pressure that exceeds the conditions necessary for the formation of steam. The hot water flows or is pumped out of the well and when the pressure is released the hot water and steam are separated and the steam is used to operate a turbine that turns an electrical generator or some other mechanism. The generator may be connected to a power grid for transport of the electricity to the point of use or the power may be used on site.
The ground water may require treatment before it is returned to the hot rock strata. It has been found that in current geothermal power generation systems the natural water or the water that is pumped into the hot rock strata is highly contaminated. The water is generally high in solids and may contain scaling or corrosive chemicals, or both and requires treatment before it can be returned to the hot rock strata. After the steam is used to turn a turbine and the steam condensed to its water phase, the resulting water is contaminated and requires treatment before passage through the piping and processing basins and before it can be returned to the hot rock strata.
It has also been noted that the use of a single well into which water is pumped into and the steam is pumped out of, limits the location of the generator turbine as well as the wells themselves since they must be located close to each other if a single well is used to both receive water, pump out steam and return water to the strata. In addition, the use of a single well limits the amount of time that the water is within the hot rock strata thereby lowering the efficiency of the system. Objects
The present invention overcomes these difficulties and has for one of its objects the provision of an improved geothermal generation system in which the water obtaining heat from the hot rock strata does not become contaminated so that it can be recycled, does not require chemical treatment beyond that used in standard boiler water treatment, and is economical in the amount of water used. Another object of the present invention is the provision of an improved geothermal power generation system in which the turbine turning a generator or other mechanism that is to be powered by the steam needed not be located near the input well that is used to receive water into the ground and can be at a location remote from that well. Another object of the present invention is the provision of an improved geothermal power generation system in which the system is more efficient. Another object of the present invention is the provision of an improved geothermal power generation system in which the system is easy to install because the wells can be drilled by horizontal well drilling techniques in common use in the oil industry. The improved geothermal power generation system is simple to use. Another object of the present invention is that the system is maintained without withdrawing water from the strata so that the pressure in the strata is maintained. Other and further objects will be obvious upon the understanding of the illustrative embodiment about to be described, or which will be indicated in the appended claims, and various advantages not referred to herein, will occur to one skilled in the art upon employment of the invention in practice. Drawings
A preferred embodiment of the invention has ben chosen for the purposes of illustration and description and is shown in the accompanying drawings forming a part of the specification wherein:
Fig. 1 is a diagrammatic view of the geothermal power generation system using a
separate inlet and outlet well made in accordance with the present invention. Fig. 2 is a diagrammatic view of the geothermal power system combining the inlet and outlet in a single well. Description Referring to the drawing, Figure 1, the geothermal power generation system of the present invention comprises an input well 1 which is sunk into the ground 2 through the surface 3 until it strikes the hot rock layer or strata 4 in the ground 2. At a location remote from the input well 1, an output well 5 is also formed which penetrates the surface 3 and also extends into the hot rock strata 4. As the well approaches the hot rock strata, the well is turned from vertical to horizontal 6 and is drilled through the hot rock strata 4 and when adequate distance for heating the water is reached, the well bore is turned to the vertical and drilled until it reaches the surface. Therefore, the input well 1, the horizontal well bore 6 ■ and the output well 5 form a continuous path from the surface, down to the hot rock strata, up through the overlying material and reaching the surface through well 5. In the drawing, the well bore 6 is shown as being horizontal. However, it will be understood that the well bore 6 may have a different orientation if desired. As shown in the drawing, more than one horizontal well can be drilled from a single vertical well. A generator turbine assembly 10 or some other mechanism that is to be operated by steam, is located near the output well 5 and is connected to the output well 5 so that steam leaving the output well 5 will operate
the generator turbine assembly 10 or similar mechanism to produce power or perform some other function.
With this system clean water is pumped into the input well 1 and released at point 12, moves through the well bore 6 in the hot rock strata 4 where it is turned to steam and is removed from the ground through the output well 5 to operate a generator turbine assembly 10 or some other mechanism. As the steam condenses, in condenser 13, and returns to its water phase, the water should then be stored in tank 14, purified in plant 15, and pumped back into the input well 1 in order to repeat the operation. However, should the water/steam become contaminated, it cannot be recycled and since it may adversely affect the operation of the generator turbine assembly. Hence, the water will pass through a water purification process 15 once each cycle that will maintain its purity.
In order to prevent contamination of the steam/water as it passes through the well bore 6 in the hot rock strata 4, the well bore 6 is lined and/or made of material that resists corrosion 7 so that the water/steam does not come into contact with the hot rock strata 4. The wells 1 and 5 and the well bore 6 may be cemented in place in accordance with the standard oil and water well practice. Hence the water/steam remains clean and can be recycled after it operates the generator turbine assembly and no water is wasted. In order to further prevent the water/steam from becoming contaminated it is desirable to have the input well 1 and the output well 5 also lined with non-corrosive casing 8 and 9, respectively, and the casing cemented in place, so that when the water enters the input well 1 it does not come into contact with the ground rock 2 and is not contaminated and when the steam exits from the output well 5, it will not become contaminated since it will not come into contact with the ground rock 2. The water/steam remains clean and can be recycled without danger of contamination. Hence, the system of the present invention saves water since the water need not be discarded and saves the expensive treatment required if contaminated ground water is circulated through the system. It will also be noted that the present invention permits the output well 5 to be located at a place remote from the input well 1. The outlet well 5 can be built close to the generator turbine assembly 10. If for some reason it is not feasible for the input well 1 to be located near the generator turbine assembly 10 it can be dug at a location remote from the input well 1 since the well bore 6 may be of any desired length provided that it mostly is located in the hot rock strata, and as a minimum, needs to be long enough to heat the water to steam, without adversely affecting efficiency and operation of the system of the present invention.
It will thus be seen that the present invention provides an improved geothermal power generation system in which the water entering the hot rock strata is not contaminated so that it can be recycled, in which the generator turbine or other mechanism that is powered by the steam need not be located near the input well that is used to receive water into the ground and can be at a location remote from that well, which will not waste water,
which is more efficient and which is easy to install and simple to use.
A variation of the system described above is shown in Figure 2. All of the element of the System shown in Figure 1 are present. The same results are accomplished with a single vertical well and one or more horizontal wells. The water is returned to the horizontal reach of the well with a tubing that extends down the casing and discharges at the end of the casing. The water is converted to steam as it flows back out the single well and hence to the turbine.
In either embodiment, the treated water may be at either end of the hot water let or distributed along all or part of the hot water leg.
In the drawing, it will be understood that there be one or more hot legs. The hot legs may all operate at the same time or they may be used in sequence with one hot leg in operation while the other legs are heating up until the other legs are ready and are sequentially put into service.
In the drawings, the hot leg is shown as being level, but it may slope up or down. The slope may be changed in order to improve the position in the hot rock strata.
The hot leg may require cleaning at infrequent intervals. If required, the water inlet pipe is removed and a cleaning mechanism is run into or through the line. This loosens the objectionable material, which is usually scale. The debris can then be pushed out of the pipe
ad the water inlet pipe returned in place after the cleaning is complete.
As many varied modifications of the subject matter of this invention will become apparent to those skilled in the art from the detailed description given hereinabove, it will be understood that the present invention is limited only as provided in the claims appended
hereto.

Claims

THE EMBODIMENT OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A geothermal power generation system comprising a substantially vertical input well bore, said input well bore extending from the surface into the ground, a substantially vertical output well bore, the output well bore extending from the surface into the ground, a substantially horizontal well bore connecting the two well bores together, at least a portion of said horizontal well bore being located in a hot rock strata, all of said vertical and horizontal bores being lined with a casing in order to prevent a fluid flowing through the well bores from coming into contact with the ground or ground water.
2. A system as set forth in claim 1, as set forth in claim 1, wherein said input well bore and said output well bore are spaced from each other.
3. A system as set forth in claim 2 wherein a single vertical well bore and one or more horizontal well bores within the hot rock strata function the same
as the two bore system.
4. A system as set forth in claim 2, wherein the said horizontal well bore is wholly within the hot rock strata.
5. A system as set forth in claim 4, wherein said input and output well bores extend into the hot rock strata
6. A system as set forth in claim 5, wherein the input well bore is adapted to receive water and the output well bore is adapted to have steam removed therefrom, and means for passing said water from said input well bore through the horizontal well bore in order to turn the water into steam.
7. A system as set forth in claim 6, wherein steam or water from the condenses steam from the output well bore is returned to the input well bore in order to
be recycled.
PCT/US2001/023477 2000-05-12 2001-07-25 Geothermal power generation Ceased WO2003012295A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US09/569,389 US6301894B1 (en) 2000-05-12 2000-05-12 Geothermal power generator
NZ525544A NZ525544A (en) 2001-07-25 2001-07-25 Geothermal power generation
JP2003517451A JP2004522071A (en) 2001-07-25 2001-07-25 Geothermal power generation
CA002425480A CA2425480A1 (en) 2001-07-25 2001-07-25 Geothermal power generation
EP01957256A EP1409870A4 (en) 2001-07-25 2001-07-25 Geothermal power generation
PCT/US2001/023477 WO2003012295A1 (en) 2000-05-12 2001-07-25 Geothermal power generation
PL01361021A PL361021A1 (en) 2001-07-25 2001-07-25 Geothermal power generation
IS6774A IS6774A (en) 2001-07-25 2003-04-10 Geothermal energy production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/569,389 US6301894B1 (en) 2000-05-12 2000-05-12 Geothermal power generator
PCT/US2001/023477 WO2003012295A1 (en) 2000-05-12 2001-07-25 Geothermal power generation

Publications (1)

Publication Number Publication Date
WO2003012295A1 true WO2003012295A1 (en) 2003-02-13

Family

ID=26680539

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023477 Ceased WO2003012295A1 (en) 2000-05-12 2001-07-25 Geothermal power generation

Country Status (2)

Country Link
US (1) US6301894B1 (en)
WO (1) WO2003012295A1 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539718B2 (en) * 2001-06-04 2003-04-01 Ormat Industries Ltd. Method of and apparatus for producing power and desalinated water
GB0321864D0 (en) * 2003-09-18 2003-10-22 Borealis Tech Ltd Geothermal power generator
US7124583B2 (en) * 2004-01-19 2006-10-24 Borealis Technical Limited Geothermal power generator
EP1607627A1 (en) * 2004-06-10 2005-12-21 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Contaminant abatement method and system for geothermal plant
US20070245729A1 (en) * 2006-04-21 2007-10-25 Mickleson D Lynn Directional geothermal energy system and method
US20080148732A1 (en) * 2006-12-22 2008-06-26 Genedics Llc System and Method for Creating a Geothermal Roadway Utility
US7566980B2 (en) * 2006-12-22 2009-07-28 Genedics Clean Energy, Llc System and method for creating a geothermal roadway utility with alternative energy pumping system
US20080148733A1 (en) * 2006-12-22 2008-06-26 Genedics Llc System and method for creating a closed-loop riparian geothermal infrastructure
US7656050B2 (en) * 2007-09-27 2010-02-02 William Riley Hydroelectric pumped-storage
US20090211757A1 (en) * 2008-02-21 2009-08-27 William Riley Utilization of geothermal energy
US8215104B2 (en) * 2008-09-29 2012-07-10 William Riley Energy from subterranean reservoir fluid
US8381523B2 (en) 2009-05-27 2013-02-26 Zadok Eli Geothermal electricity production methods and geothermal energy collection systems
US20110048005A1 (en) * 2009-08-26 2011-03-03 Mchargue Timothy Reed Loop geothermal system
US20110067399A1 (en) * 2009-09-22 2011-03-24 7238703 Canada Inc. Geothermal power system
EA018364B1 (en) * 2010-10-18 2013-07-30 Товарищество С Ограниченной Ответственностью "Научно-Внедренческий Центр Алмас" Geothermal power unit
AU2011328932B2 (en) 2010-11-16 2016-06-02 InnerGeo LLC System and method for extracting energy
US8650875B2 (en) 2010-12-08 2014-02-18 Dwpna, Llc Direct exchange geothermal refrigerant power advanced generating system
WO2012079078A2 (en) 2010-12-10 2012-06-14 Global Carbon Solutions, Inc. Passive heat extraction and power generation
US20120174581A1 (en) * 2011-01-06 2012-07-12 Vaughan Susanne F Closed-Loop Systems and Methods for Geothermal Electricity Generation
AU2012286516B2 (en) * 2011-07-15 2015-07-09 Garry HINE System and method for power generation using a hybrid geothermal power plant including a nuclear plant
US8610303B2 (en) 2012-01-04 2013-12-17 John R. Yocum, JR. System and method for downhole geothermal electrical power generation
TW201402943A (en) 2012-01-27 2014-01-16 深井電源有限責任公司 Single well, gravity geothermal system for energy extraction
US20150285226A1 (en) * 2014-04-04 2015-10-08 Richard James Archambeau Geothermal Energy Production Using a Closed-Loop Heat Exchange System
CN114542045A (en) 2015-09-24 2022-05-27 地热解决方案有限责任公司 Geothermal heat harvester
CN107388611A (en) * 2017-09-21 2017-11-24 中盐勘察设计院有限公司 A kind of method that rock salt bittern is preheated with directional-butted well
CA3013374A1 (en) 2017-10-31 2019-04-30 Eavor Technologies Inc. Method and apparatus for repurposing well sites for geothermal energy production
CA3041002A1 (en) * 2017-11-18 2019-05-18 Eavor Technologies Inc. Method for generating geothermal power with sealed closed well loops
AU2019202101A1 (en) 2018-05-10 2019-11-28 Eavor Technologies Inc Fluid for use in power production environments
CA3044153C (en) * 2018-07-04 2020-09-15 Eavor Technologies Inc. Method for forming high efficiency geothermal wellbores
CA3167574C (en) 2018-08-12 2026-03-17 Eavor Technologies Inc. Method for thermal profile control and energy recovery in geothermal wells
IT201900006817A1 (en) * 2019-05-14 2020-11-14 Turboden Spa HEAT EXCHANGE CIRCUIT FOR GEOTHERMAL SYSTEM
CA3083575C (en) 2019-06-27 2022-01-04 Eavor Technologies Inc. Operational protocol for harvesting a thermally productive formation
CA3100013C (en) 2020-04-21 2023-03-14 Eavor Technologies Inc. Method for forming high efficiency geothermal wellbores using phase change materials
CA3085901C (en) * 2020-07-06 2024-01-09 Eavor Technologies Inc. Method for configuring wellbores in a geologic formation
WO2022018674A1 (en) 2020-07-21 2022-01-27 Eavor Technologies Inc. Construction and operation of conductive and convective geothermal wells
KR20230039737A (en) 2020-08-28 2023-03-21 이버 테크놀로지스 인크. Cooling for Geothermal Well Drilling
US12129836B2 (en) 2020-10-07 2024-10-29 Board Of Regents, The University Of Texas System Geothermal well designs and control thereof for extraction of subsurface geothermal power
IT202100017711A1 (en) * 2021-07-06 2023-01-06 Geolog S R L METHOD FOR INSTALLING A GEOTHERMAL SYSTEM, METHOD FOR USING GEOTHERMAL ENERGY, AND GEOTHERMAL SYSTEM

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864208A (en) * 1972-04-11 1975-02-04 Watase Kinichi Geothermal-nuclear waste disposal and conversion system
US5311741A (en) * 1992-10-09 1994-05-17 Blaize Louis J Hybrid electric power generation
US5911684A (en) * 1995-06-07 1999-06-15 Shnell; James H. System for geothermal production of electricity

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274769A (en) 1964-05-05 1966-09-27 J B Reynolds Inc Ground heat steam generator
US3470943A (en) 1967-04-21 1969-10-07 Allen T Van Huisen Geothermal exchange system
SU322084A1 (en) * 1970-03-23 1973-10-26 DEVICE FOR EXTRACTION OF GEOTHERMAL ENERGY
US3765477A (en) * 1970-12-21 1973-10-16 Huisen A Van Geothermal-nuclear energy release and recovery system
US3857244A (en) 1973-11-02 1974-12-31 R Faucette Energy recovery and conversion system
US4052857A (en) 1976-10-06 1977-10-11 The Dow Chemical Company Geothermal energy from salt formations
US4137720A (en) * 1977-03-17 1979-02-06 Rex Robert W Use of calcium halide-water as a heat extraction medium for energy recovery from hot rock systems
JPS5452349A (en) 1977-09-30 1979-04-24 Ushio Nagase Natural steam power application system
US4223729A (en) * 1979-01-12 1980-09-23 Foster John W Method for producing a geothermal reservoir in a hot dry rock formation for the recovery of geothermal energy
US4290266A (en) 1979-09-04 1981-09-22 Twite Terrance M Electrical power generating system
GB8401908D0 (en) * 1984-01-25 1984-02-29 Solmecs Corp Nv Utilisation of thermal energy
US4776169A (en) 1988-02-03 1988-10-11 Coles Jr Otis C Geothermal energy recovery apparatus
US5697218A (en) 1995-06-07 1997-12-16 Shnell; James H. System for geothermal production of electricity
US5685362A (en) * 1996-01-22 1997-11-11 The Regents Of The University Of California Storage capacity in hot dry rock reservoirs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864208A (en) * 1972-04-11 1975-02-04 Watase Kinichi Geothermal-nuclear waste disposal and conversion system
US5311741A (en) * 1992-10-09 1994-05-17 Blaize Louis J Hybrid electric power generation
US5911684A (en) * 1995-06-07 1999-06-15 Shnell; James H. System for geothermal production of electricity

Also Published As

Publication number Publication date
US6301894B1 (en) 2001-10-16

Similar Documents

Publication Publication Date Title
US6301894B1 (en) Geothermal power generator
US3957108A (en) Multiple-completion geothermal energy production systems
RU2269728C2 (en) Method and system for exchanging earth energy between earth bodies and energy exchanger using natural heat energy primarily for electric current generation
US4054176A (en) Multiple-completion geothermal energy production systems
US4044830A (en) Multiple-completion geothermal energy production systems
US3468762A (en) Distillation of sea water using steam turbine electric generator and solar still
US20200072199A1 (en) System for the non conventional production of electrical power from a geothermal source and relevant party
WO2005054746A3 (en) Method for production of high pressure steam from produced water
US20080023963A1 (en) Hydroelectric power and desalination
US4844162A (en) Apparatus and method for treating geothermal steam which contains hydrogen sulfide
US4051677A (en) Multiple-completion geothermal energy production systems
EP1409870A1 (en) Geothermal power generation
RU2088842C1 (en) Makeup water treatment plant
RU2260751C2 (en) Geothermal energy generating plant
RU2621440C1 (en) Device for converting geothermal energy into electrical energy
RU2422630C1 (en) Method and system of collection, preparation of low-head gas-carbon methane and use of thermal potential of formation fluid (versions)
NZ525544A (en) Geothermal power generation
CN202470523U (en) Device for acquiring heat from crust temperature-increasing layer
US20130186809A1 (en) Clarifier and launder systems
Elíasson Power generation from high-enthalpy geothermal resources
RU2178542C2 (en) Heating and hot water supply plant
Thorhallsson Experience in developing and utilizing geothermal resources in Iceland
RU2246010C1 (en) Steam-turbine plant for geothermal power station
RU2191918C2 (en) Liquid transfer method
DE3906135A1 (en) Heat recovery (generating) system

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA IS JP NZ PL

Kind code of ref document: A1

Designated state(s): CA IS JP NZ PL RU

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB IE IT LU MC NL PT SE TR

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2425480

Country of ref document: CA

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2001957256

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 525544

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 2003517451

Country of ref document: JP

WWP Wipo information: published in national office

Ref document number: 2001957256

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 525544

Country of ref document: NZ

WWG Wipo information: grant in national office

Ref document number: 525544

Country of ref document: NZ

WWW Wipo information: withdrawn in national office

Ref document number: 2001957256

Country of ref document: EP