PDF Publication Title:
Text from PDF Page: 012
In some cases information on a geothermal system is limited to the temperature, flow rate and chemical composition of a thermal spring. Under these circumstances, reservoir volumes are estimated by applying constraints from well-characterized geothermal reservoirs in analogous geologic settings. For example, for hot springs emerging from range-front faults in the Great Basin, the width of the fault damage zone (typically 100 to 500 m) constrains one horizontal dimension of the geothermal reservoir, and the temperature of the reservoir fluid relative to the background geothermal gradient defines the maximum depth of circulation. The greatest uncertainty in the estimated reservoir volume for a range front fault system lies in the lateral extent of the reservoir along strike. In the absence of geophysical or structural constraints, the upper end of possible along-strike extents is defined by the examples of producing geothermal reservoirs and other well-explored geothermal systems. Based on these examples, the default along-strike extent of a fault-hosted geothermal reservoir ranges from 1 to 5 km, with a most likely extent of 2 km. The largest volumes determined from this range of reservoir dimensions are consistent with larger, producing fault-hosted reservoirs such as Dixie Valley and Beowawe. The smallest volumes are consistent with simple vertical conduits of limited spatial extent and doubtful viability for commercial power production. In Circular 790 the maximum depth extent for geothermal reservoirs was set to 3 km, as a representative limit of the economic and technological constraints of drilling and exploitation (Muffler and others, 1979). Although the maximum depth of geothermal drilling in the United States is approximately 3.5 km, geothermal wells deeper than 4 km have been completed in Italy, and a number of wells for Enhanced Geothermal Systems development have been drilled to depths of approximately 5 km (Kobayashi, 2000; Bertani, 2005). In the case of geothermal systems for which the base of the reservoir has not been defined by drilling, thermal constraints on the vertical extent of fluid circulation or the depth of the brittle-ductile transition are applied, but in no case is the base of the reservoir allowed to extend beyond 6 km. Studies relating the rate of natural heat loss (both advective and conductive) and the dimensions and rate of fluid flow through a hydrothermal system can also provide a basis for estimating the volume of a geothermal reservoir (Wisian and others, 2001; Williams, 2005). In the new resource assessment, estimates of total heat loss from a geothermal reservoir are determined from heat flow or temperature-gradient measurements, when available, and used as an additional check against the predictions of the estimated reservoir temperatures and volumes. Geothermal Recovery Factor Hydrothermal systems capable of generating electrical power require the presence of both high temperatures and locally high permeabilities (for example, Bjornsson and Bodvarsson, 1990). Although the volume method provides a means of estimating the heat content of a geothermal reservoir, it does not explicitly predict the reservoir permeability. The presence of permeability adequate for production is based on the 9PDF Image | Assessment of Identified Geothermal Resources
PDF Search Title:
Assessment of Identified Geothermal ResourcesOriginal File Name Searched:
of2008_1296.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 |