PDF Publication Title:
Text from PDF Page: 012
the reservoir region. The array of geophones is emplaced in shalloW Wells surrounding the injection Well. TWo or more production Wells are then drilled to opti mally access the man-made con?ned hot dry rock geother mal reservoir. During the latter stages of the drilling of one or more of these production Wells, and during a pause in drilling operations, the reservoir is groWn an increment larger, again using supercritical carbon dioxide, to alloW timely“mid-course”correctionstothedrillingtrajectoriesof theproductionWells. Thisclosed-loop?oW testingWouldbedonebythesimple expedient of Wasting the produced geothermal heat to the atmosphereinanair-cooledheatexchanger.A high-pressure injectionpump Wouldbeusedtoestablishtheinitiallevelof reservoir pressuriZation and to maintain that level of pres suriZationduringtheestablishmentofcirculation,butmight not be needed once steady-state ?oW conditions With buoy ant circulation are established. US 6,668,554 B1 11 The rate of injection is maintained at about 50 to 100 pounds per second for a period of several Weeks or more, until a suitably large fractured hot dry rock reservoir is created. The desired volume of the fractured reservoir is up to 1/2cubic kilometer or more, Which requires the injection of about 125,000 cubic meters of supercritical ?uid, accord ing to the data shoWn in FIG. 3. At an injection rate of 100 lb/s, this volume requires a pumping time of about 30 days. The actual injection rate is controlled by maintaining the surfaceinjectionpressureatlessthan5000psi,themost economical injection pressure range When using commercial pumping equipment for an extended period of time. Duringtheentireperiodofreservoircreation,thegroWth of the reservoir is monitored microseismically to determine itsdevelopingshapeandorientation,toalloWthedetermi nation of the optimum placement for the tWo (or more) production Wells to be subsequently drilled. This is done by recording, With an array of near-surface geophones, the hydraulic-fracturing-inducedseismicitygeneratedbyshear of6monthsofreservoir?oWtesting,Wouldbeabout7 slippagealongthenetWorkofpressure-dilatingjointsWithin20 poundspersecond. 12 (d) the amount of Water dissolved in the produced super critical carbon dioxide as a function of time—and the success in methods of Water removal; and (e) the temporal variation in the rate of diffusion of the geo?uid outWard from the fractured hot dry rock res ervoirintotherockmasssurroundingthereservoir(i.e., the geo?uid loss rate as a function of time). The temporal variation in the rate of diffusion of the geo?uid outWard from the fractured hot dry rock reservoir is 10 theprincipalmeasurementinestablishingtherateofcarbon dioxide sequestration in the rock mass surrounding the hot dry rock reservoir. During the period of How testing under a variety of 30 surfaceoperatingpressures,activeseismicmonitoringofthe near-reservoir region Would be maintained to determine the degreeofcon?nementofthefracturedhotdryrockreservoir and Whether any reservoir leakage paths have developed. This data, in combination With the temporal variation in the reneWedreservoirgroWthresultingfromadditionalhydrau 35 rateofgeo?uidlossfromthereservoir,arethetWoprincipal quantities needed in determining the degree of con?nement To determine the need for mid-course corrections, a temporary geophone Would be installed at the bottom of the selected production Well during the pause in drilling to monitorthemicroseismicityoccurringduringtheperiodof lic fracturing. This is to provide a more accurate assessment of the shape and orientation of the hot dry rock reservoir than Was initially obtained using only the surface seismic array. Finally, the hot dry rock circulating system is completed by drilling the tWo or more production Wells to intersect the reservoir near each end of the elongated reservoir region as de?ned by the “cloud” of microseismic event locations de?ningtheshapeofthefracturedhotdryrockreservoir.All the Wells Would be appropriately completed With casing to the surface and then purged of drilling ?uids and other Water-basedmaterials,againusinggaseouscarbondioxide. EXAMPLEII 50 In a constructive reduction to practice, a half-year pre production test of the con?ned hot dry rock reservoir con structively created in Example I is made. Based on the Wealth of Fenton Hill hot dry rock reservoir performance data already available and alloWing for a factor of three increase in the diffusively of supercritical carbon 15 dioxide compared to Water under comparable reservoir conditions of temperature and pressure (250° C. and 52 MPa), it is anticipated that the geo?uid loss rate from the peripheryofa1/2cubickilometerreservoirregion,attheend of the hot dry rock reservoir. At the end of this period of preliminary reservoir ?oW testing,althedataandparametersneededfordesigningand 40 fabricatinganoptimumsurfacepoWerplantareinhandand the reservoir is fully veri?ed With respect to poWer produc tion potential and longevity. While the apparatuses, articles of manufacture, methods and compositions of this invention have been described in 45 detail for the purpose of illustration, the inventive apparatuses, articles of manufacture, methods and compo sitions are not to be construed as limited thereby. This patent is intended to cover all changes and modi?cations Within the spirit and scope thereof. INDUSTRIAL APPLICABILITY The invention method and apparatus can be used for production of geothermal energy from hot dry rock reser voirsusingsupercritical?uids.Practiceoftheinventionalso FolloWing the reservoir creation and How loop develop mentphasesofExampleI,thehotdryrockreservoiris55 providesameansforsequestrationofcarbondioxidethatis ?oW-tested for a period of about half a year to establish and verifyalthenecessaryoperatingparametersforthedesign of an appropriate surface poWer plant or other heat utiliZa tionsystem. The parameters that need to be measured and veri?ed are: (a)thegeo?uidproductiontemperature; (b) the production ?oW rate and the reservoir pressure drop and reservoir ?oW impedance, all as functions of 60 produced in combustion processes or otherWise obtained such that the carbon dioxide is not released to the atmo sphere to contribute to continuing global Warming. What is claimed is: 1. A method of extracting geothermal energy from an undergroundhotdryrockreservoir,comprisingthestepsof: (a) creating an underground hot dry rock reservoir by fracturing underground hot rock With ?uid carbon dioxideconsistingessentiallyofcarbondioxide?uidin the supercritical phase or carbon dioxide ?uid that is transformed into the supercritical phase by the hot dry injection and production pressure levels; 65 (c) the distribution of the How impedance across the reservoir; rock;PDF Image | GEOTHERMAL ENERGY PRODUCTION WITH SUPERCRITICAL FLUIDS
PDF Search Title:
GEOTHERMAL ENERGY PRODUCTION WITH SUPERCRITICAL FLUIDSOriginal File Name Searched:
US6668554.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |