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US20070163805A1 - System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy - Google Patents

System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy Download PDF

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Publication number
US20070163805A1
US20070163805A1 US11/648,936 US64893607A US2007163805A1 US 20070163805 A1 US20070163805 A1 US 20070163805A1 US 64893607 A US64893607 A US 64893607A US 2007163805 A1 US2007163805 A1 US 2007163805A1
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US
United States
Prior art keywords
fluid
tube
rock
hot
external
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.)
Abandoned
Application number
US11/648,936
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English (en)
Inventor
Davide Trevisani
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.)
Soilmec SpA
Original Assignee
Soilmec SpA
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 Soilmec SpA filed Critical Soilmec SpA
Assigned to SOILMEC S.P.A. reassignment SOILMEC S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TREVISANI, DAVIDE
Publication of US20070163805A1 publication Critical patent/US20070163805A1/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • F24T10/20—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 present invention relates to the sector of exploitation of geothermal resources for the purpose of production of electrical and heating energy.
  • the invention regards a system for drilling the ground aimed at enabling circulation of fluid in a plant for the exploitation of geothermal energy.
  • One purpose of the present invention is to achieve a further considerable limitation of the costs of installation of this latter solution.
  • a further purpose of the present invention is to enable heat exchange to be ensured even in unfavourable cases, such as the ones in which the natural fracturing of the rocks is very extensive, up to the point where the fluid introduced could dissipate without any possibility of recovery.
  • the subject of the invention is a system for drilling the ground in order to enable circulation of fluids in a plant for exploitation of geothermal energy according to claim 1 , in which in order to obtain a circulation of fluid just one borehole is used.
  • a tube must be inserted within the borehole for introduction of the cold fluid, whilst the annular gap between the internal tube and the wall of the borehole is used for extracting the heated fluid, in countercurrent.
  • the internal tube will be appropriately thermally insulated.
  • FIG. 1 is a side-on profile of the typical borehole for excessively fractured rocks
  • FIG. 2 is a top plan view of the same borehole
  • FIG. 3 is a side-on profile of the typical borehole for rocks with modest dispersion.
  • FIG. 4 is a top plan view of the latter borehole.
  • the reference number 1 designates the soil and rock cover that is to be traversed in order to reach the bank of hot rock 2 .
  • FIGS. 1 and 2 In excessively fractured ground (see FIGS. 1 and 2 ), a borehole of large diameter is drilled, within which a piping made up of two coaxial tubes is inserted.
  • the reference number 3 designates the internal tube, which is thermally insulated and is designed for the introduction of cold fluid into the rock.
  • the reference number 4 designates the external tube for extraction of the hot fluid, which is cemented and coated.
  • the hole for return of the hot fluid to the surface carries inside it the stretch of thermally insulated tube 9 .
  • the reference number 7 designates, as a whole, the active area, and the reference number 8 the passive area.
  • the external coating tube 4 must be closed at the end and must extend throughout the length of the piping.
  • the internal tube 3 for introduction of water terminates at a small distance from the end of the external tube, as may be noted once again in FIG. 1 .
  • the arrows of FIG. 1 indicate the direction of advance of the fluid which is initially cold and subsequently hot.
  • the external wall of the external tube 4 functions as heat-exchange surface directly in contact with the hot rock. Its length in the hot area will have to be as extensive as possible. With the cost of just one borehole it will thus be possible to provide a complete closed circuit for introduction, heating, and extraction of the fluid, preventing any dispersion in the excessively fractured rock.
  • the main borehole of larger diameter is made in the hot rock and provided with the coating 6 in its initial stretch, whilst it remains without any coating for a second stretch 5 .
  • a battery of rods 11 of smaller diameter Introduced inside said borehole is a battery of rods 11 of smaller diameter, which provides the hole designed for introduction of the fluid.
  • the complete plant envisages a terminal stretch 13 , which extends from the free end of the rods 11 , is not coated, and has the purpose of diffusing the cold fluid in the rock, using a large area of contact (see arrows in FIGS. 3 and 4 ).
  • the stretch of rods 11 which is coated, is also thermally insulated and cemented in the borehole.
  • the length of said stretch increases the path that the fluid introduced from the end must follow in order to reach the borehole for return to the surface. Cementing closes the most direct return path, i.e., the one that immediately surrounds the internal tube, which is the less efficient one in terms of heat exchange, since it does not extend into the cracks and porosities.
  • the stretch of borehole 5 with larger diameter is not instead coated and its purpose is to offer a wide area of collection of the heated fluid.
  • the rest of the borehole up to exit from the ground is preferably coated to prevent any dispersion of fluid and houses inside it the thermally insulated tube 9 for introduction of the cold fluid. Said stretch starts from the bank of hot rock 2 and arrives at the surface, as has been seen in the case of the first embodiment of FIGS. 1 and 2 .
  • the internal tube 13 can branch off into a certain number of branches to increase the surface of infiltration of the fluid in the rock.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Hydrology & Water Resources (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Fertilizing (AREA)
  • Earth Drilling (AREA)
US11/648,936 2006-01-13 2007-01-03 System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy Abandoned US20070163805A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2006A000021 2006-01-13
IT000021A ITTO20060021A1 (it) 2006-01-13 2006-01-13 Sistema di perforazione del terreno per realizzare la circolazione di fluido in un impianto per lo sfruttamento dell'energia geotermica.

Publications (1)

Publication Number Publication Date
US20070163805A1 true US20070163805A1 (en) 2007-07-19

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US11/648,936 Abandoned US20070163805A1 (en) 2006-01-13 2007-01-03 System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy

Country Status (4)

Country Link
US (1) US20070163805A1 (it)
EP (1) EP1808570A1 (it)
JP (1) JP2007198723A (it)
IT (1) ITTO20060021A1 (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021618A1 (en) * 2008-08-20 2010-02-25 Conocophillips Company Closed loop energy production from geothermal reservoirs
IT201900006817A1 (it) 2019-05-14 2020-11-14 Turboden Spa Circuito di scambio termico per impianto geotermico
WO2022076594A1 (en) * 2020-10-07 2022-04-14 Board Of Regents, The University Of Texas System Geothermal well designs and control thereof for extraction of subsurface geothermal power
US11821312B2 (en) 2018-12-21 2023-11-21 Terra Sonic International, LLC Drilling rig and methods using multiple types of drilling for installing geothermal systems
US11953238B1 (en) 2022-02-01 2024-04-09 Xgs Energy, Inc. Systems and methods for thermal reach enhancement
US12188691B2 (en) 2021-10-21 2025-01-07 Xgs Energy, Inc. GeoHeat harvesting enhancement
US12241018B2 (en) 2022-02-01 2025-03-04 Xgs Energy, Inc. High thermal coefficient slurry compositions and methods therefor
EP4341621A4 (en) * 2021-05-21 2025-04-02 NCS Multistage Inc. Method for multistage fracturing of a geothermal well
US12454482B2 (en) 2022-02-01 2025-10-28 XGS Energy Inc. High thermal coefficient grout compositions and methods therefor
US12534974B2 (en) 2025-02-06 2026-01-27 Xgs Energy, Inc. Systems and methods to place a thermally conductive sheath in a geothermal well

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450754B8 (en) 2007-07-06 2013-02-06 Greenfield Energy Ltd Geothermal energy system and method of operation
GB2450755B (en) * 2007-07-06 2012-02-29 Greenfield Energy Ltd Geothermal energy system and method of operation
GB2461029B (en) 2008-06-16 2011-10-26 Greenfield Energy Ltd Thermal energy system and method of operation
WO2012079078A2 (en) * 2010-12-10 2012-06-14 Global Carbon Solutions, Inc. Passive heat extraction and power generation
GB2488797A (en) 2011-03-08 2012-09-12 Greenfield Master Ipco Ltd Thermal Energy System and Method of Operation
JP7116981B2 (ja) * 2017-05-26 2022-08-12 ジャパン・ニュー・エナジー株式会社 地熱発電装置
CA3100013C (en) 2020-04-21 2023-03-14 Eavor Technologies Inc. Method for forming high efficiency geothermal wellbores using phase change materials
KR20230039737A (ko) * 2020-08-28 2023-03-21 이버 테크놀로지스 인크. 지열 웰 드릴링을 위한 냉각
WO2024079806A1 (ja) * 2022-10-11 2024-04-18 株式会社サイネットカンパニー 発電装置及び発電方法

Citations (22)

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US3613792A (en) * 1969-12-11 1971-10-19 British Petroleum Co Oil well and method for production of oil through permafrost zone
US3786858A (en) * 1972-03-27 1974-01-22 Atomic Energy Commission Method of extracting heat from dry geothermal reservoirs
US3957108A (en) * 1973-07-02 1976-05-18 Huisen Allen T Van Multiple-completion geothermal energy production systems
US3973626A (en) * 1975-09-24 1976-08-10 Atlantic Richfield Company Well completion in permafrost
US3995695A (en) * 1975-08-25 1976-12-07 Atlantic Richfield Company Method for completing a well in a permafrost zone
US4044830A (en) * 1973-07-02 1977-08-30 Huisen Allen T Van Multiple-completion geothermal energy production systems
US4082140A (en) * 1972-11-14 1978-04-04 Austral-Erwin Engineering Company Heat exchange method
US4200152A (en) * 1979-01-12 1980-04-29 Foster John W Method for enhancing simultaneous fracturing in the creation of a geothermal reservoir
US4201060A (en) * 1978-08-24 1980-05-06 Union Oil Company Of California Geothermal power plant
US4220202A (en) * 1970-03-23 1980-09-02 Aladiev Ivan T Apparatus for realization of rock exploitation method based on thermodynamic cycles utilizing in situ energy source
US4376462A (en) * 1981-02-19 1983-03-15 The United States Of America As Represented By The United States Department Of Energy Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates
US4392531A (en) * 1981-10-09 1983-07-12 Ippolito Joe J Earth storage structural energy system and process for constructing a thermal storage well
US4444420A (en) * 1981-06-10 1984-04-24 Baker International Corporation Insulating tubular conduit apparatus
US4459731A (en) * 1980-08-29 1984-07-17 Chevron Research Company Concentric insulated tubing string
US5862866A (en) * 1994-05-25 1999-01-26 Roxwell International Limited Double walled insulated tubing and method of installing same
US6035949A (en) * 1998-02-03 2000-03-14 Altschuler; Sidney J. Methods for installing a well in a subterranean formation
US6955219B2 (en) * 2003-07-03 2005-10-18 Enlink Geoenergy Services, Inc. Earth loop installation with sonic drilling
US20060191719A1 (en) * 2005-02-28 2006-08-31 Roussy Raymond J Method of geothermal loop installation
US20060201179A1 (en) * 2005-03-09 2006-09-14 Kelix Heat Transfer Systems, Llc Optimized ground loop systems for heat pumps
US20070062704A1 (en) * 2005-09-21 2007-03-22 Smith David R Method and system for enhancing hydrocarbon production from a hydrocarbon well
US20070107901A1 (en) * 2004-05-14 2007-05-17 Maguire James Q In-situ method of fracturing gas shale and geothermal areas
US20080035345A1 (en) * 2006-05-10 2008-02-14 Kosakewich Darrell S Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339890A (en) * 1993-02-08 1994-08-23 Climate Master, Inc. Ground source heat pump system comprising modular subterranean heat exchange units with concentric conduits
DE19919555C1 (de) * 1999-04-29 2000-06-15 Flowtex Technologie Gmbh & Co Verfahren zur Erschließung geothermischer Energie sowie Wärmetauscher hierfür

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3613792A (en) * 1969-12-11 1971-10-19 British Petroleum Co Oil well and method for production of oil through permafrost zone
US4220202A (en) * 1970-03-23 1980-09-02 Aladiev Ivan T Apparatus for realization of rock exploitation method based on thermodynamic cycles utilizing in situ energy source
US3786858A (en) * 1972-03-27 1974-01-22 Atomic Energy Commission Method of extracting heat from dry geothermal reservoirs
US4082140A (en) * 1972-11-14 1978-04-04 Austral-Erwin Engineering Company Heat exchange method
US3957108A (en) * 1973-07-02 1976-05-18 Huisen Allen T Van Multiple-completion geothermal energy production systems
US4044830A (en) * 1973-07-02 1977-08-30 Huisen Allen T Van Multiple-completion geothermal energy production systems
US3995695A (en) * 1975-08-25 1976-12-07 Atlantic Richfield Company Method for completing a well in a permafrost zone
US3973626A (en) * 1975-09-24 1976-08-10 Atlantic Richfield Company Well completion in permafrost
US4201060A (en) * 1978-08-24 1980-05-06 Union Oil Company Of California Geothermal power plant
US4200152A (en) * 1979-01-12 1980-04-29 Foster John W Method for enhancing simultaneous fracturing in the creation of a geothermal reservoir
US4459731A (en) * 1980-08-29 1984-07-17 Chevron Research Company Concentric insulated tubing string
US4376462A (en) * 1981-02-19 1983-03-15 The United States Of America As Represented By The United States Department Of Energy Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates
US4444420A (en) * 1981-06-10 1984-04-24 Baker International Corporation Insulating tubular conduit apparatus
US4392531A (en) * 1981-10-09 1983-07-12 Ippolito Joe J Earth storage structural energy system and process for constructing a thermal storage well
US5862866A (en) * 1994-05-25 1999-01-26 Roxwell International Limited Double walled insulated tubing and method of installing same
US6035949A (en) * 1998-02-03 2000-03-14 Altschuler; Sidney J. Methods for installing a well in a subterranean formation
US6955219B2 (en) * 2003-07-03 2005-10-18 Enlink Geoenergy Services, Inc. Earth loop installation with sonic drilling
US20070012446A1 (en) * 2003-07-03 2007-01-18 Johnson Howard E Jr Earth loop installed with sonic apparatus
US20070107901A1 (en) * 2004-05-14 2007-05-17 Maguire James Q In-situ method of fracturing gas shale and geothermal areas
US20060191719A1 (en) * 2005-02-28 2006-08-31 Roussy Raymond J Method of geothermal loop installation
US20060201179A1 (en) * 2005-03-09 2006-09-14 Kelix Heat Transfer Systems, Llc Optimized ground loop systems for heat pumps
US20070062704A1 (en) * 2005-09-21 2007-03-22 Smith David R Method and system for enhancing hydrocarbon production from a hydrocarbon well
US20080035345A1 (en) * 2006-05-10 2008-02-14 Kosakewich Darrell S Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021618A1 (en) * 2008-08-20 2010-02-25 Conocophillips Company Closed loop energy production from geothermal reservoirs
US11821312B2 (en) 2018-12-21 2023-11-21 Terra Sonic International, LLC Drilling rig and methods using multiple types of drilling for installing geothermal systems
IT201900006817A1 (it) 2019-05-14 2020-11-14 Turboden Spa Circuito di scambio termico per impianto geotermico
US20220186984A1 (en) * 2019-05-14 2022-06-16 Turboden S.p.A. Heat exchange circuit for a geothermal plant
US11802716B2 (en) * 2019-05-14 2023-10-31 Turboden S.p.A. Heat exchange circuit for a geothermal plant
WO2022076594A1 (en) * 2020-10-07 2022-04-14 Board Of Regents, The University Of Texas System Geothermal well designs and control thereof for extraction of subsurface geothermal power
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
EP4341621A4 (en) * 2021-05-21 2025-04-02 NCS Multistage Inc. Method for multistage fracturing of a geothermal well
US12188691B2 (en) 2021-10-21 2025-01-07 Xgs Energy, Inc. GeoHeat harvesting enhancement
US12331964B2 (en) 2021-10-21 2025-06-17 Xgs Energy, Inc. Geoheat harvesting enhancement
US11953238B1 (en) 2022-02-01 2024-04-09 Xgs Energy, Inc. Systems and methods for thermal reach enhancement
US12241018B2 (en) 2022-02-01 2025-03-04 Xgs Energy, Inc. High thermal coefficient slurry compositions and methods therefor
US12454482B2 (en) 2022-02-01 2025-10-28 XGS Energy Inc. High thermal coefficient grout compositions and methods therefor
US12534974B2 (en) 2025-02-06 2026-01-27 Xgs Energy, Inc. Systems and methods to place a thermally conductive sheath in a geothermal well

Also Published As

Publication number Publication date
JP2007198723A (ja) 2007-08-09
EP1808570A1 (en) 2007-07-18
ITTO20060021A1 (it) 2007-07-14

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AS Assignment

Owner name: SOILMEC S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TREVISANI, DAVIDE;REEL/FRAME:018971/0251

Effective date: 20070219

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION