EP0173730A1 - Procede et puits profond pour l'extraction de l'energie geothermique - Google Patents

Procede et puits profond pour l'extraction de l'energie geothermique

Info

Publication number
EP0173730A1
EP0173730A1 EP85901536A EP85901536A EP0173730A1 EP 0173730 A1 EP0173730 A1 EP 0173730A1 EP 85901536 A EP85901536 A EP 85901536A EP 85901536 A EP85901536 A EP 85901536A EP 0173730 A1 EP0173730 A1 EP 0173730A1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
transfer medium
layer
heat
deep well
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.)
Withdrawn
Application number
EP85901536A
Other languages
German (de)
English (en)
Inventor
Jenö BALOGH
László KISS
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.)
Geo-Thermal Mueszaki Fejlesztesi Es Hasznositasi Kisszovetkezet
Original Assignee
Geo-Thermal Mueszaki Fejlesztesi Es Hasznositasi Kisszovetkezet
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 Geo-Thermal Mueszaki Fejlesztesi Es Hasznositasi Kisszovetkezet filed Critical Geo-Thermal Mueszaki Fejlesztesi Es Hasznositasi Kisszovetkezet
Publication of EP0173730A1 publication Critical patent/EP0173730A1/fr
Withdrawn legal-status Critical Current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
    • F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
    • 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 invention relates to a method and a deep well for obtaining geothermal energy, the geothermal thermal energy being conveyed from the deep well to the surface of the earth with the aid of a suitable heat transfer medium, and after heat removal the heat transfer medium is pressed back into the earth for environmental reasons.
  • a heat transfer medium is required for the geothermal energy.
  • This medium can be, for example, water, petroleum or any suitable gaseous medium.
  • These media record the temperature of the surrounding earth in the depths of the earth and sometimes reach the surface of the earth naturally, in the form of springs or geysers, but in recent decades they have generally been exploited by deep wells.
  • the heat recovery technology of the so-called warm dry stones is also known.
  • Two wells are also laid here and these are connected to one another via a low-lying high-temperature zone using the Hydrofrac process (layer splitting) and in this way the water that is pressed into one well is heated in dry hot rock and reaches the surface of the earth via the other well. From here, the water is pressed back into the first well after the heat has been extracted and this cycle is repeated from the beginning.
  • This solution is also due to the manufacturing costs of the both wells quite expensive, on the other hand also by the rather expensive Hydrofrac process, whereby the bottom layer is mostly split in the vertical direction.
  • the task to be solved is to create a method and a deep well for the extraction of geothermal energy, which realize the extraction of this energy with significantly lower investment costs than the known solutions, but which at the same time enable environmentally friendly extraction technology and the water reserves of the liquid-storing layers only minimal Take measurements.
  • the object is achieved according to the invention in that the heat transfer medium suitable for extracting the geothermal energy is conveyed out of the earth in a system constructed in the same deep well and pressed back into the earth, the upwardly flowing conveyed and the downwardly pressed backward heat transfer stream being thermally insulated from one another are performed and the heat transfer medium is pressed back into such a bottom layer, which is separated from the conveying layer of the heat transfer medium by a direct connection of the two layers in the vicinity of the
  • the direction of flow of the heat transfer medium in the deep well is changed periodically and the previous injection layer as a conveying layer, while the former conveying layer is used as a press-in layer.
  • heat transfer medium preferably water, steam, gas or petroleum.
  • an underground heat storage system is operated with simultaneous or sequential storage and removal of the heat transfer medium.
  • the deep drilling well suitable for carrying out the method according to the invention consists of telescopically fitting tube sets, the ever longer tube sets having an ever smaller diameter and where the lower section of the longest and innermost tube set with at least one
  • Passage of the heat transfer medium opening is provided.
  • the tube set surrounding the innermost tube set and forming an annular space with it is expanded to a layer suitable for pressing in the returned heat transfer medium and its lower section is also provided with at least one opening allowing the heat transfer medium to pass through, the innermost pipe set is provided with thermal insulation in the length of the pipe set surrounding it.
  • the solution according to the invention is based on a telescope-like well design known per se, which in the given exemplary embodiment consists of three tube sets 1, 2, 3 arranged one inside the other, the individual tube sets with an ever smaller diameter having an ever greater length exhibit.
  • the annular spaces between the individual tube sets are closed at the end of tube sets 1 and 2 with a stuffing box 4 and 5, respectively.
  • the innermost and longest tube set 3 extends from the tube sets to a depth, ie to a bottom layer 6, from where the heat transfer medium, possibly the thermal water, is to be conveyed.
  • the lower section of the tube set 3 is provided with at least one opening, which enables the passage of the heat transfer medium into the interior of the tube set 3 (or vice versa). This opening can e.g. B. be a column or perforation in the lower section, or also the end of the tube set 3.
  • a submersible motor pump 7 is arranged, which is connected to a pipeline 8, which leads the removed heat transfer medium (thermal water) to the place of heat recovery.
  • the cooled medium is returned via a pipe 9 into an annular space 10 which is formed between the pipe set 3 and the pipe set 2.
  • the tube set 3 surrounding the tube set 3 extends to a depth, ie to a bottom layer 11, which is suitable for pressing back the returned heat transfer medium and which is separated from the conveying layer, ie from the bottom layer 6, by at least one barrier layer, which immediate Connection of the two layers, e.g. B. a fürströmuhg in the vicinity of the deep well prevented.
  • B. a naturalströmuhg in the vicinity of the deep well prevented.
  • the lower section of the tube set 2 is also in the region of the bottom layer 11 with at least one opening, for. B. provided with a perforation that allows the passage of the heat transfer medium through the wall of the tube set 2.
  • the depth of the bottom layer 11 is determined by the laying depth of the tube set 2 or by the position of the layers suitable for pressing in above the end of the tube set.
  • the system described would still be unusable because the cooled heat transfer medium pressed back into the annular space 10 would remove the heat content of the heat transfer medium flowing upwards in the tube set 3 and heat compensation would take place.
  • the two media flows flowing in the opposite direction must be ge by heat insulation of suitable quality and size be separated.
  • the tube set 3 is provided with thermal insulation 12 in the length of the tube set 2.
  • the system according to the invention works as follows:
  • the heat transfer medium in the present exemplary embodiment thermal water at a temperature of 90 ° C., is conveyed from the bottom layer 6 via the innermost tube set 3 and passed via the pipeline 8 to the point of heat removal.
  • the here cooled to about 20 to 40 ° C and rich in mineral salts thermal water is pipeline 9 in the deep well, d. H. returned into the annular space 10 between the tube set 3 and the tube set 2 and pressed back into the bottom layer 11 in this way, the heat insulation 12 preventing the thermal water which is now flowing upwards in the tube set 2 from being cooled. It is advantageous if the heat is withdrawn from the extracted thermal water and then pressed back into the earth in a completely closed, pressurized system which prevents the thermal water from being exposed to potentially harmful chemical processes through the ambient air.
  • the described method can be reversed after a while (e.g. in each heating period), and the layer of soil that previously functioned as a conveying layer can now serve to absorb the returned thermal water and vice versa.
  • this system can also act as a heat accumulator system operated.
  • the two bottom layers 6, 11 are used as conveying layers and the thermal water conveyed from the two layers is used for different purposes.
  • the cooled heat transfer medium must of course be removed in a different way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Structures (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Un procédé et un puits profond pour l'extraction de l'énergie géothermique dans lesquels l'énergie géothermique est extraite de la profondeur du puits par un agent porteur de chaleur puis transportée à la surface. Après extraction de la chaleur, l'agent porteur est renvoyé sous pression dans la terre pour des raisons de protection de l'environnement. L'idée à la base de l'invention consiste à extraire l'agent porteur de la terre puis de l'y renvoyer sous pression par le même puits. Les courants de circulation de l'agent porteur vers le haut et vers le bas sont isolés thermiquement l'un de l'autre. L'agent porteur de chaleur est renvoyé sous pression dans une couche du sol qui est séparée le cas échéant de la couche d'extraction de l'agent porteur par une couche isolante qui empêche le contact hydraulique direct des deux couches dans la région du puits, mais le permet éventuellement à une grande distance horizontale autour de celui-ci.
EP85901536A 1984-03-02 1985-03-01 Procede et puits profond pour l'extraction de l'energie geothermique Withdrawn EP0173730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU84834A HU197063B (en) 1984-03-02 1984-03-02 Method and deep well for producing geothermic energy
HU83484 1984-03-02

Publications (1)

Publication Number Publication Date
EP0173730A1 true EP0173730A1 (fr) 1986-03-12

Family

ID=10951595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85901536A Withdrawn EP0173730A1 (fr) 1984-03-02 1985-03-01 Procede et puits profond pour l'extraction de l'energie geothermique

Country Status (3)

Country Link
EP (1) EP0173730A1 (fr)
HU (1) HU197063B (fr)
WO (1) WO1985003994A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183100A (en) * 1991-02-14 1993-02-02 Harrell Jr James E System for efficiently exchanging heat or cooling ground water in a deep well
JP3927593B1 (ja) * 2006-09-22 2007-06-13 博明 上山 二重管式地熱水循環装置
DE102007033436A1 (de) * 2007-07-18 2009-01-22 Kessels, Winfried, Dr. Wärmetauscher in Bohrungen mit Ringraumanregung
WO2009039839A1 (fr) * 2007-09-28 2009-04-02 Geo-En Energy Technologies Gmbh Installation de transport et de décontamination d'eau souterraine
WO2009043548A1 (fr) 2007-09-28 2009-04-09 Geo-En Energy Technologies Gmbh Puits de nappe phréatique
DE102008007627B3 (de) * 2008-02-04 2009-07-30 Tutech Innovation Gmbh Erdwärmeanlage
CH703613A1 (de) * 2010-08-17 2012-02-29 Vyacheslav Trushkin Verfahren zur Gewinnung von Energie aus geothermischen Quellen und Anlage hierzu.
EP4261473A1 (fr) * 2022-04-12 2023-10-18 Vallourec USA Corporation Puits géothermique, et appareil de tubage correspondant

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU322084A1 (ru) * 1970-03-23 1973-10-26 Устройство для извлечения геотермальнойэнергии
US3805885A (en) * 1970-06-18 1974-04-23 Huisen A Van Earth heat energy displacement and recovery system
US3818490A (en) * 1972-08-04 1974-06-18 Westinghouse Electric Corp Dual frequency array
DE2445281A1 (de) * 1974-09-21 1976-04-08 Erik Dipl Ing Zimmer Verfahren zur waermespeicherung
US4024919A (en) * 1976-06-16 1977-05-24 Exxon Production Research Company Technique for insulating a wellbore with silicate foam
SU800513A1 (ru) * 1978-12-21 1981-01-30 Государственный Научно-Исследо-Вательский Энергетический Инсти-Тут Им. Г.M.Кржижановского Устройство дл отбора теплазЕМли
US4270608A (en) * 1979-12-27 1981-06-02 Halliburton Company Method and apparatus for gravel packing multiple zones
DE3029753A1 (de) * 1980-08-06 1982-02-25 Günter 4952 Porta Westfalica Strathe Waermeaustauscher zur nutzung der erdwaerme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8503994A1 *

Also Published As

Publication number Publication date
HU197063B (en) 1989-02-28
HUT44308A (en) 1988-02-29
WO1985003994A1 (fr) 1985-09-12

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