WO2010016921A2 - Système et procédé pour optimiser la conductibilité thermique et augmenter la résistance aux agents caustiques d'un lait de ciment - Google Patents

Système et procédé pour optimiser la conductibilité thermique et augmenter la résistance aux agents caustiques d'un lait de ciment Download PDF

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Publication number
WO2010016921A2
WO2010016921A2 PCT/US2009/004518 US2009004518W WO2010016921A2 WO 2010016921 A2 WO2010016921 A2 WO 2010016921A2 US 2009004518 W US2009004518 W US 2009004518W WO 2010016921 A2 WO2010016921 A2 WO 2010016921A2
Authority
WO
WIPO (PCT)
Prior art keywords
grout
heat
particulate
well
water
Prior art date
Application number
PCT/US2009/004518
Other languages
English (en)
Other versions
WO2010016921A3 (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 WO2010016921A2 publication Critical patent/WO2010016921A2/fr
Publication of WO2010016921A3 publication Critical patent/WO2010016921A3/fr

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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.
  • Portions of the system requires the optimization of heat flow.
  • the structural capacity of the grout is not important.
  • the heat conductivity of the grout impacts the economics of the system for it is part of the system where heat is transferred from the geothermically active earth to the system. This invention optimizes the heat conductivity of the grout without considering its structural qualities.
  • This invention also includes a grout that can be manufactured to resist the caustic nature of the well bottom.
  • FIG. 1 is a conceptual view of a system according to one embodiment of the present invention showing a single closed loop having a heat exchanging element where the heat conducting material and grout mate hot rock to the heat exchanging element;
  • FIG. 2 is a conceptual view of a system according to another embodiment of the present invention showing a particulate mixed with grout to connect and form heat conductive paths within the grout;
  • FIG. 3 is a table of thermal conductivity ratings for various materials that may be used as particulate to mix with the grout.
  • FIG. 1 illustrates a first preferred embodiment for the system of the present invention, wherein said system is comprised of a single closed loop having a heat exchanging element 3 where the heat conducting material and grout mate the hot rock 7 to the heat exchanging element.
  • FIG. 2 illustrates a preferred embodiment for the grout where particulate is mixed with the grout and the particulate connects and forms heat conductive paths 14 within the grout.
  • FIG. 3 illustrates a chart that shows thermal conductivity ratings for various materials that could be used as particulate to mix with the grout.
  • the system starts with a closed loop where a fluid (liquid or gas) 1 is piped (with one or more pipes) to a level of the well where there is heat that the system needs to bring to the surface.
  • the pipe(s) is attached to a heat exchanging element 3 that attaches to a pipe(s) that brings the heated fluid to the surface.
  • the heat exchanging element 3 expedites the exchange of heat from the well to the heat transporting fluid.
  • Heat conductive material and grout mates the heat exchanging element 6 to other heat conducting materials and the geothermically active hot rock.
  • the heat zone portion of the system needs the most optimized heat conducting material and grout 10.
  • Grouts were formulated to meet a number of criteria including thermal conductivity, coefficient of permeability, dimensional stability, durability, compatibility with conventional mixing and pumping equipment, environmental compliance and economics.
  • the heat nest 10 needs the most optimized thermal conductibility and can sacrifice other criteria of the grout.
  • the invention is creating a grout mixture that maximizes the thermal conductivity for the heat nest of a well for a heat exchanging element to maximize heat transfer.
  • the following formula assumes the iron filings connect to one another.
  • Formula: SC (Y% x SG) + ((1- Y%) x (n x SG))
  • Additional additives mixed with the grout can make the grout resistant to the caustic environments of wells. If the well has an acidic environment the grout can be made to be alkaline. If the well is alkaline the grout can be made to be acidic. By making the grout opposite to the caustic nature of the environment, the grout protects the rest of the extraction system from the environment. This is accomplished by choosing the correct properties when manufacturing the grout.

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  • 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)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Processing Of Solid Wastes (AREA)
  • Road Paving Structures (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Cette invention concerne un procédé de transfert de chaleur par l'intermédiaire d'un lait de ciment qui a été optimisé pour le transfert thermique et comprend un matériau particulaire thermoconducteur mélangé au lait de ciment. Le mélange du lait de ciment et du matériau particulaire comprend suffisamment de matériau particulaire pour former des connexions qui créent des voies conductrices de chaleur. Un procédé pour traiter un lait de ciment de façon qu'il soit résistant à un environnement caustique existant au fond d'un puits, comprenant le mélange d'un agrégat avec le lait de ciment pour former un mélange ayant un pH à l'opposé de l'environnement caustique au fond du puits est également décrit.
PCT/US2009/004518 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 WO2010016921A2 (fr)

Applications Claiming Priority (8)

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

Publications (2)

Publication Number Publication Date
WO2010016921A2 true WO2010016921A2 (fr) 2010-02-11
WO2010016921A3 WO2010016921A3 (fr) 2010-05-27

Family

ID=41664124

Family Applications (4)

Application Number Title Priority Date Filing Date
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
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

Family Applications Before (3)

Application Number Title Priority Date Filing Date
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
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

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Families Citing this family (5)

* 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
MA52125B1 (fr) 2018-06-20 2022-03-31 David Alan Mcbay Procédé, système et appareil d'extraction d'énergie thermique à partir d'un fluide saumâtre géothermique
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912941A (en) * 1987-07-22 1990-04-03 Buechi Hans F Method and apparatus for extracting and utilizing geothermal energy
US6789608B1 (en) * 2002-04-22 2004-09-14 B. Ryland Wiggs Thermally exposed, centrally insulated geothermal heat exchange unit
US20060249276A1 (en) * 2005-05-05 2006-11-09 Spadafora Paul F Enriched high conductivity geothermal fill and method for installation

Family Cites Families (7)

* 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
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
US5272879A (en) * 1992-02-27 1993-12-28 Wiggs B Ryland Multi-system power generator
JP2004169985A (ja) * 2002-11-19 2004-06-17 Mitsubishi Materials Natural Resources Development Corp 地熱交換システム
KR100654151B1 (ko) * 2003-10-09 2006-12-05 코오롱건설주식회사 말뚝의 중공부를 이용한 열교환장치 및 그 설치공법
KR101048398B1 (ko) * 2004-09-02 2011-07-11 재단법인 포항산업과학연구원 관정형 지중 열교환기

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912941A (en) * 1987-07-22 1990-04-03 Buechi Hans F Method and apparatus for extracting and utilizing geothermal energy
US6789608B1 (en) * 2002-04-22 2004-09-14 B. Ryland Wiggs Thermally exposed, centrally insulated geothermal heat exchange unit
US20060249276A1 (en) * 2005-05-05 2006-11-09 Spadafora Paul F Enriched high conductivity geothermal fill and method for installation

Also Published As

Publication number Publication date
WO2010016921A3 (fr) 2010-05-27
WO2010016919A2 (fr) 2010-02-11
WO2010016919A3 (fr) 2010-03-25
WO2010016920A3 (fr) 2010-05-27
WO2010016920A2 (fr) 2010-02-11
WO2010144073A1 (fr) 2010-12-16

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