WO2010016919A2 - Système et procédé permettant de maximiser la performance d’un échangeur de chaleur entre état solide et circuit fermé dans un puits - Google Patents

Système et procédé permettant de maximiser la performance d’un échangeur de chaleur entre état solide et circuit fermé dans un puits Download PDF

Info

Publication number
WO2010016919A2
WO2010016919A2 PCT/US2009/004515 US2009004515W WO2010016919A2 WO 2010016919 A2 WO2010016919 A2 WO 2010016919A2 US 2009004515 W US2009004515 W US 2009004515W WO 2010016919 A2 WO2010016919 A2 WO 2010016919A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat
fluid
exchanging element
heat exchanging
pipe
Prior art date
Application number
PCT/US2009/004515
Other languages
English (en)
Other versions
WO2010016919A3 (fr
Inventor
Michael J. Parrella
Original Assignee
Parrella Michael J
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
Application filed by Parrella Michael J filed Critical Parrella Michael J
Publication of WO2010016919A2 publication Critical patent/WO2010016919A2/fr
Publication of WO2010016919A3 publication Critical patent/WO2010016919A3/fr

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
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T2201/00—Prediction; Simulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
    • 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 generally to the field of converting geothermal energy into electricity. More specifically, the present invention relates to capturing geothermal heat from deep within a drilled well and bringing this geothermal heat to the Earth's surface to generate electricity in an environmentally friendly process.
  • Wells may also be drilled specifically to produce heat. While there are known geothermal heat/electrical methods and systems for using the geothermal heat/energy from deep within a well (in order to produce a heated fluid (liquid or gas) and generate electricity therefrom), these methods have significant environmental drawbacks and are usually inefficient in oil and gas wells due to the depth of such wells.
  • GHP geothermal heat pump
  • EGS enhanced geothermal systems
  • GHP systems geothermal heat from the Earth is used to heat a fluid, such as water, which is then used for heating and cooling.
  • the fluid usually water, is actually heated to a point where it is converted into steam in a process called flash steam conversion, which is then used to generate electricity.
  • flash steam conversion a process called flash steam conversion
  • These systems use existing or man made water reservoirs to carry the heat from deep wells to the surface.
  • the water used for these systems is extremely harmful to the environment, as it is full of minerals, is caustic and can pollute water aquifers.
  • Such deep- well implementations require that a brine reservoir exists or that a reservoir is built by injecting huge quantities of water into an injection well, , effectively requiring the use of at least two wells. Both methods require that polluted dirty water is brought to the surface.
  • water injected into a well permeates the Earth as it travels over rock and other material under the Earth's surface, becoming polluted, caustic, and dangerous.
  • a water-based system for generating heat from a well presents significant and specific issues. For example, extremely large quantities of water are often injected into a well. This water is heated and flows around the inside of the well to become heated and is then extracted from the well to generate electricity. This water becomes polluted with minerals and other harmful substances, often is very caustic, and causes problems such as seismic instability and disturbance of natural hydrothermal manifestations. Additionally, there is a high potential for pollution of surrounding aquifers. This polluted water causes additional problems, such as depositing minerals and severely scaling pipes.
  • Geothermal energy is present everywhere beneath the Earth's surface.
  • the temperature of the Earth increases with increasing depth, from 400°- 1800° F at the base of the Earth's crust to an estimated temperature of 6300°-8100° F. at the center of the Earth.
  • it in order to be useful as a source of energy, it must be accessible to drilled wells. This increases the cost of drilling associated with geothermal systems, and the cost increases with increasing depth.
  • a geothermal system such as for example and enhanced geothermal system (EGS)
  • water or a fluid a liquid or gas
  • EGS enhanced geothermal system
  • the water then travels over hot rock to a production well and the hot, dirty water or fluid is transferred to the surface to generate electricity.
  • the fluid may actually be heated to the point where it is converted into gas/steam.
  • the heated fluid or gas/steam then travels to the surface up and out of the well.
  • the heated water and/or the gas/steam is used to power a thermal engine (electric turbine and generator) which converts the thermal energy from the heated water or gas/steam into electricity.
  • prior art geothermal systems include a pump, a piping system buried in the ground, an above ground heat transfer device and tremendous quantities of water that circulates through the Earth to pick up heat from the Earth's hot rock.
  • the ground is used as a heat source to heat the circulating water.
  • An important factor in determining the feasibility of such a prior art geothermal system is the depth of wellbore, which affects the drilling costs, the cost of the pipe and the size of the pump. If the wellbore has to be drilled to too great a depth, a water-based geothermal system may not be a practical alternative energy source.
  • these water- based systems often fail due to a lack of permeability of hot rock within the Earth, as water injected into the well never reaches the production well that retrieves the water.
  • the invention is a process for maximizing the performance of a heat exchanger that resides at the heat zone of a geothermic system in a well.
  • the heat exchanging mechanism is a combination of a fluid heat exchanging element 3, heat conductive material and grout 6.
  • the fluid heat exchanging mechanism maximizes the heat transfer from the bottom of the well to the surface.
  • the invention uses a heat exchanger that has a fluid component and a sold state heat flow component where the solid state heat flow component transfers heat to the fluid.
  • the heat exchanging mechanism needs to be able to enable the maximum amount of fluid flow while also maximizing the heat exchange to the fluid.
  • the pipe(s) need to minimize heat loss while transporting the fluid.
  • the volume of fluid that flows through the fluid heat exchanging element needs to be as high a multiple as possible compared to the fluid flow of the pipe(s).
  • the rate of flow of the fluid in the fluid heat exchanging element will therefore be decreased by the volume differences between the pipe and the heat exchanger element.
  • By slowing down the fluid flow in the fluid heat exchanging element you increase the time the fluid is exposed to the heat conductive material and grout in the heat zone and increase the heat that is transferred to the fluid. This allows the heat conductive material and grout part of the heat exchanging mechanism time to conduct and transfer the heat to the fluid.
  • a standard heat exchanger transfers the heat from one fluid to another. The following embodiments transfer a solid state heat flow to a fluid.
  • FIG. 1 is a conceptual view of a system according to one embodiment of the present invention showing a fluid heat exchanging element having a much larger diameter than the feeder pipes;
  • FIG. 2 is a conceptual view of a system according to another embodiment of the present invention showing a double helix design of the fluid heat exchanging element;
  • FIG. 3 is a conceptual view of a system according to another embodiment of the present invention showing the fluid heat exchanging element as a collection of smaller heat exchanger pipes where the sum of the volume capacity of the pipes is greater than the volume capacity of the feeder pipes;
  • FIG. 4 is a conceptual view of a system according to another embodiment of the present invention showing the fluid heat exchanging element built in modules having a total length that is the sum of the modules;
  • FIG. 5 is a cross-sectional, conceptual view of pipes according to one embodiment of the present invention.
  • FIG. 1 illustrates a first preferred embodiment for the fluid heat exchanging element 3 where the element has a much larger diameter then the feeder pipes 2.
  • the larger diameter slows the rate of flow of the fluid while it flows through the heat nest 10 portion of the system.
  • the slower flow characteristics allow the fluid a longer time to pick up the heat from the heat conductive material and grout 6.
  • the fluid travels down and up of the fluid heat exchanging element picking up heat;
  • FIG. 2 illustrates a second preferred embodiment for the fluid heat exchanging element 3 where the element is a double helix design.
  • the double helix pipes have an equal or larger diameter than the feeder pipes and the twisted nature of the pipes increase the length of the travel path within the heat nest 10.
  • the increased travel path (and the lager diameter if present) increase the time the fluid spends within the heat nest 10 portion of the system and the twisted pipe arrangement increases the heat transfer surface area increasing the transfer capability.
  • the increased time allows the fluid a longer time to pick up the heat from the heat conductive material and grout 6 and the increased surface area increase the transfer capacity.
  • the fluid travels down and up of the fluid heat exchanging element picking up heat;
  • FIG. 3 illustrates a third preferred embodiment for the fluid heat exchanging element 3 where the element is a collection of smaller heat exchanger pipes 4 where the sum of the volume capacity of the pipes is greater than the volume capacity of the feeder pipes 2.
  • the increased volume of the heat exchanger pipes slows the fluid flow and the increased surface area of the pipes (versus a single pipe) increases the heat transfer capability.
  • the smaller diametr of the pipes allows more of the fluid to be exposed to the heat therby increasing the capability of the transfer of heat.
  • the larger volume of the heat exchanger pipes increase the time the fluid spends within the heat nest 10 portion of the system and the increased surface area of he pipe surface increases and the smaller diameters increases the heat transfer capability.
  • the increased time allows the fluid a longer time to pick up the heat from the heat conductive material and grout 6 and the increased surface area and smaller diameters improves the transfer capability per linear foot.
  • the fluid travels down and up of the fluid heat exchanging element picking up heat;
  • FIG. 4 illustrates an embodiment of the fluid heat exchanging element where the element can be built in modules and the total length is the sum of the attached modules.
  • the last module (Fig 3) located at the bottom of the well has the downward flowing feeder pipe attached to the upward flowing feeder pipe creating a U-connection.
  • the fluid heat exchanging element needed to be 500 feet long we can build it by connecting twenty five (25) twenty foot (20) modules.
  • the module implementation can be accomplished regardless of the design of the heat exchanging element.
  • Each of the preferred embodiments is designed to maximize the exchange of heat from a solid state heat flow environment (heat conductive material and grout 6) to a fluid environment. This is accomplished by designing a fluid heat exchanging element that accomplishes one or more of the following functions:
  • the heat exchanger must fit into the bore hole of a well.
  • Heat exchanging elements are devices built for efficient heat transfer which typically transfer heat from one fluid to another. They are widely used in many engineering processes. Some examples include intercoolers, pre-heaters, boilers and condensers in power plants.
  • the heat exchanging element utilized in the present invention is a high-temperature heat exchanger ("HTHE") comprised of a recuperative type "cross flow” heat exchanger, in which a fluid exchanges heat with a solid state heat flow on either side of a dividing wall.
  • HTHE high-temperature heat exchanger
  • the heat exchange element may be comprised of an HTHE which utilizes a regenerative and/or evaporative design. The embodiments of the invention replace one of the fluids with a solid state heat flow.
  • the heat exchanger will have a plurality of smaller capillaries (heat exchanger pipes 5).
  • the fluid enters the heat exchanger from the downward flowing feeder pipe(s) 2, where it is then dispersed, flowing through each of the plurality of smaller capillaries.
  • the capillaries are thinner (having a smaller diameter than the downward flowing pipe(s), thereby allowing the fluid to heat more quickly as it passes through the capillaries - increasing the overall efficacy of the heat exchanger.
  • the combined flow of the capillaries of the heat exchanging element must be able to accommodate an equal or greater flow then the downward and upward flow pipe(s). This greater flow increases the time the fluid spends in the heat exchanger.
  • the heat exchanging element may be comprised from a titanium clad tube sheet, wherein the tube sheet may be formed from a high temperature nickel based alloy or ferritic steel.
  • the heat exchanger is able to operate efficiently under high temperature/pressure conditions.
  • the thickness of the titantium may vary in accordance with specific temperature and/or pressure conditions under which the heat exchange element operates.
  • heat exchanging elements there are other types of heat exchanging elements known the art which may also be used in the present invention such as parallel heat exchangers and/or reverse flow heat exchangers. In alternative embodiments, any of these types of exchangers may be utilized.
  • a primary consideration in designing the heat exchanging element will be to ensure its efficient operation under high temperature/pressure conditions. Further, any such heat exchanger utilized in the present invention must be sized to fit within the bore hole of the well.
  • the upward flowing feeder pipe(s) 2 of the piping system are preferably coupled to the heat exchanging element 3 on an opposite side of the element.
  • the upward flowing pipe(s) 2 draw the heated fluid from the heat exchanging element 3 and bring the heated fluid upward from the "heat point" in the well to the top surface.
  • the fluid that is used should be optimized to carry heat.
  • An example of such a fluid is the antifreeze used in automobiles. Gas or water can also be used as a fluid.
  • the fluid cannot and should not have any corrosive properties and the piping material needs to be resistant to the fluid.
  • the fluid will be pressurized within the piping system so the system should be able to withstand the pressure generated by the depth of the well and the pumping mechanism, as the fluid is pumped through the system.
  • the well is completely filled with a heat conductive material and grout 6.
  • the heat conductive material and grout 6 must have heat conductive properties and preferably will bond and solidify within the well.
  • the heat exchanging element will be lowered into the well and then the heat conductive material and the grout will be inserted into the well before the insulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Processing Of Solid Wastes (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Road Paving Structures (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L’invention concerne un échangeur de chaleur qui transfère la chaleur provenant d’un matériau thermoconducteur à l’état solide vers un fluide se trouvant dans un circuit fermé. Un composant de captage de chaleur comprend un système d’extraction de chaleur entre état solide et circuit fermé comportant un élément échangeur de chaleur à l’intérieur d’un nid de chaleur dans un puits conçu pour optimiser le transfert de chaleur entre un matériau thermoconducteur et un flux de fluide en circuit fermé. Un système de canalisations achemine le contenu chauffé par l’élément échangeur de chaleur vers une surface du puits.
PCT/US2009/004515 2008-08-05 2009-08-05 Système et procédé permettant de maximiser la performance d’un échangeur de chaleur entre état solide et circuit fermé dans un puits WO2010016919A2 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US13795508P 2008-08-05 2008-08-05
US13795608P 2008-08-05 2008-08-05
US13797408P 2008-08-05 2008-08-05
US13797508P 2008-08-05 2008-08-05
US61/137,955 2008-08-05
US61/137,974 2008-08-05
US61/137,975 2008-08-05
US61/137,956 2008-08-05

Publications (2)

Publication Number Publication Date
WO2010016919A2 true WO2010016919A2 (fr) 2010-02-11
WO2010016919A3 WO2010016919A3 (fr) 2010-03-25

Family

ID=41664124

Family Applications (4)

Application Number Title Priority Date Filing Date
PCT/US2009/004515 WO2010016919A2 (fr) 2008-08-05 2009-08-05 Système et procédé permettant de maximiser la performance d’un échangeur de chaleur entre état solide et circuit fermé dans un puits
PCT/US2009/004518 WO2010016921A2 (fr) 2008-08-05 2009-08-05 Système et procédé pour optimiser la conductibilité thermique et augmenter la résistance aux agents caustiques d'un lait de ciment
PCT/US2009/004517 WO2010144073A1 (fr) 2008-08-05 2009-08-05 Système et procédé pour maximiser le transfert de chaleur au fond d'un puits au moyen d'éléments thermoconducteurs et d'un modèle de prévision
PCT/US2009/004516 WO2010016920A2 (fr) 2008-08-05 2009-08-05 Système de conception et de commande pour gérer et optimiser un système géothermique de production électrique à partir d’un ou de plusieurs puits produisant individuellement de la chaleur

Family Applications After (3)

Application Number Title Priority Date Filing Date
PCT/US2009/004518 WO2010016921A2 (fr) 2008-08-05 2009-08-05 Système et procédé pour optimiser la conductibilité thermique et augmenter la résistance aux agents caustiques d'un lait de ciment
PCT/US2009/004517 WO2010144073A1 (fr) 2008-08-05 2009-08-05 Système et procédé pour maximiser le transfert de chaleur au fond d'un puits au moyen d'éléments thermoconducteurs et d'un modèle de prévision
PCT/US2009/004516 WO2010016920A2 (fr) 2008-08-05 2009-08-05 Système de conception et de commande pour gérer et optimiser un système géothermique de production électrique à partir d’un ou de plusieurs puits produisant individuellement de la chaleur

Country Status (1)

Country Link
WO (4) WO2010016919A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109709134A (zh) * 2018-08-24 2019-05-03 中国石油大学(华东) 一种井筒自循环热交换实验装置与方法
CN111428346A (zh) * 2020-03-03 2020-07-17 西安交通大学 一种综合考虑换热-阻力-经济因素的无干扰地岩热换热器设计方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010206101C1 (en) * 2010-08-03 2013-04-11 Ignatious Isaakidis Isaakidis high temperature engineered geothermal systems (EGS)
US9593868B2 (en) 2015-02-20 2017-03-14 Vladimir Entin Horizontal ground-coupled heat exchanger for geothermal systems
WO2019246369A1 (fr) 2018-06-20 2019-12-26 Mcbay David Alan Procédé, système et appareil d'extraction d'énergie thermique à partir d'un fluide saumâtre géothermique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911683A (en) * 1974-12-12 1975-10-14 John H Wolf Efficient and nonpolluting method for recovering geothermal heat energy
KR20050034535A (ko) * 2003-10-09 2005-04-14 코오롱건설주식회사 말뚝의 중공부를 이용한 열교환장치 및 그 설치공법
KR20060021023A (ko) * 2004-09-02 2006-03-07 재단법인 포항산업과학연구원 관정형 지중 열교환기

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392531A (en) * 1981-10-09 1983-07-12 Ippolito Joe J Earth storage structural energy system and process for constructing a thermal storage well
JPS593178A (ja) * 1982-06-29 1984-01-09 Toshiba Corp フラツシユ式地熱蒸気タ−ビンの制御装置
CH677698A5 (fr) * 1987-07-22 1991-06-14 Hans Ferdinand Buechi
US5272879A (en) * 1992-02-27 1993-12-28 Wiggs B Ryland Multi-system power generator
US6789608B1 (en) * 2002-04-22 2004-09-14 B. Ryland Wiggs Thermally exposed, centrally insulated geothermal heat exchange unit
JP2004169985A (ja) * 2002-11-19 2004-06-17 Mitsubishi Materials Natural Resources Development Corp 地熱交換システム
US20060249276A1 (en) * 2005-05-05 2006-11-09 Spadafora Paul F Enriched high conductivity geothermal fill and method for installation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911683A (en) * 1974-12-12 1975-10-14 John H Wolf Efficient and nonpolluting method for recovering geothermal heat energy
KR20050034535A (ko) * 2003-10-09 2005-04-14 코오롱건설주식회사 말뚝의 중공부를 이용한 열교환장치 및 그 설치공법
KR20060021023A (ko) * 2004-09-02 2006-03-07 재단법인 포항산업과학연구원 관정형 지중 열교환기

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109709134A (zh) * 2018-08-24 2019-05-03 中国石油大学(华东) 一种井筒自循环热交换实验装置与方法
CN111428346A (zh) * 2020-03-03 2020-07-17 西安交通大学 一种综合考虑换热-阻力-经济因素的无干扰地岩热换热器设计方法
CN111428346B (zh) * 2020-03-03 2022-04-05 西安交通大学 一种综合考虑换热-阻力-经济因素的无干扰地岩热换热器设计方法

Also Published As

Publication number Publication date
WO2010016921A3 (fr) 2010-05-27
WO2010016919A3 (fr) 2010-03-25
WO2010144073A1 (fr) 2010-12-16
WO2010016921A2 (fr) 2010-02-11
WO2010016920A3 (fr) 2010-05-27
WO2010016920A2 (fr) 2010-02-11

Similar Documents

Publication Publication Date Title
US9404480B2 (en) System and method of capturing geothermal heat from within a drilled well to generate electricity
US20100270002A1 (en) System and method of maximizing performance of a solid-state closed loop well heat exchanger
US11788516B2 (en) Systems and methods of generating electricity using heat from within the earth
EP3114349B1 (fr) Procédé et système de production d'énergie géothermique
US20200217304A1 (en) Systems and methods of generating electricity using heat from within the earth
US20150330670A1 (en) System and method for utilizing oil and gas wells for geothermal power generation
US9423158B2 (en) System and method of maximizing heat transfer at the bottom of a well using heat conductive components and a predictive model
US20090211757A1 (en) Utilization of geothermal energy
US20130300127A1 (en) Geothermal energy recovery from abandoned oil wells
WO2010016919A2 (fr) Système et procédé permettant de maximiser la performance d’un échangeur de chaleur entre état solide et circuit fermé dans un puits
CN209893671U (zh) 一种基于闭合回路热媒管的高效地热利用系统
CN104653417A (zh) 中间介质为氨的干热岩地热发电系统
US20100270001A1 (en) System and method of maximizing grout heat conductibility and increasing caustic resistance
CN103147941A (zh) 利用地热热能的发电装置
EP2189731A1 (fr) Sonde géothermique
Priarone et al. Numerical evaluation of long-term performance of borehole heat exchanger fields
WO2019021066A1 (fr) Procédé et système de collecte d'énergie thermique à partir de formations géologiques
CN219120795U (zh) 一种套管式地热井及基于该地热井的原位地热发电系统
KR102314799B1 (ko) 이중관형 지중 열교환 시스템
Gosnold et al. Geothermal and Electric Power Analysis of Horizontal Oil Well Fields Williston Basin, North Dakota, USA
CN103147942A (zh) 利用地热热能的多级发电装置
Soldo et al. Exergy Performance of a Wellbore Heat Exchanger Coupled With a ORC: Plant: Comparison of Two Different Case Studies
Blanco Ilzarbe et al. Recent patents on geothermal power extraction devices
WO2023091786A1 (fr) Système d'énergie géothermique supercritique
CN115751745A (zh) 一种套管式地热井及基于该地热井的原位地热发电系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09805279

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09805279

Country of ref document: EP

Kind code of ref document: A2