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Investigating Ultra High-enthalpy Geothermal Systems: a Collaborative Initiative to Promote Scientific Opportunities : Volume 18, Issue 18 (22/12/2014)

By Elders, W. A.

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Book Id: WPLBN0004021593
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Investigating Ultra High-enthalpy Geothermal Systems: a Collaborative Initiative to Promote Scientific Opportunities : Volume 18, Issue 18 (22/12/2014)  
Author: Elders, W. A.
Volume: Vol. 18, Issue 18
Language: English
Subject: Science, Scientific, Drilling
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Jr, A. S., Schiffman, P., Nielson, D., & Elders, W. A. (2014). Investigating Ultra High-enthalpy Geothermal Systems: a Collaborative Initiative to Promote Scientific Opportunities : Volume 18, Issue 18 (22/12/2014). Retrieved from http://worldlibrary.net/


Description
Description: Dept. of Earth Sciences, University of California, Riverside, CA 92521, USA. Scientists, engineers, and policy makers gathered at a workshop in the San Bernardino Mountains of southern California in October 2013 to discuss the science and technology involved in developing high-enthalpy geothermal fields. A typical high-enthalpy geothermal well between 2000 and 3000 m deep produces a mixture of hot water and steam at 200–300 °C that can be used to generate about 5–10 MWe of electric power. The theme of the workshop was to explore the feasibility and economic potential of increasing the power output of geothermal wells by an order of magnitude by drilling deeper to reach much higher pressures and temperatures. Development of higher enthalpy geothermal systems for power production has obvious advantages; specifically higher temperatures yield higher power outputs per well so that fewer wells are needed, leading to smaller environmental footprints for a given size of power plant. Plans for resource assessment and drilling in such higher enthalpy areas are already underway in Iceland, New Zealand, and Japan. There is considerable potential for similar developments in other countries that already have a large production of electricity from geothermal steam, such as Mexico, the Philippines, Indonesia, Italy, and the USA.

However drilling deeper involves technical and economic challenges. One approach to mitigating the cost issue is to form a consortium of industry, government and academia to share the costs and broaden the scope of investigation. An excellent example of such collaboration is the Iceland Deep Drilling Project (IDDP), which is investigating the economic feasibility of producing electricity from supercritical geothermal reservoirs, and this approach could serve as model for future developments elsewhere. A planning committee was formed to explore creating a similar initiative in the USA.


Summary
Investigating ultra high-enthalpy geothermal systems: a collaborative initiative to promote scientific opportunities

Excerpt
Bender-Lamb, S.: Magma energy exploratory well, Long Valley Caldera, California Geology, 44, 85–92, 1991.; Dunn, J. C. and Hardee H. C.: Superconvecting geothermal zones, J. Volcanol. Geoth. Res., 11, 189–201, 1981.; Eichelberger, J. C. and Dunn, H. C.: Magma Energy; what is the potential?, Bulletin, Geothermal Resources Council, 19, 53–56, 1990.; Elders, W. A.: A proposed collaborative initiative to promote development of higher-enthalpy geothermal systems in the USA, Geoth. Res. T., 37, 263–270, 2013.; Elders, A., Fri\dhleifsson, G. Ó., Zierenberg, R. A., Pope, E. C., Mortensen, A. K., Gu\dhmundsson, Á., Lowenstern, J. B., Marks, N. E., Owens, L., Bird, D. K., Reed, M., Olsen, N. J., and Schiffman, P.: Origin of a rhyolite that intruded a geothermal well while drilling at the Krafla volcano, Iceland, Geology, 39, 231–234, 2011.; Elders, W. A. and Fri\dhleifsson, G. Ó.: Implications of the Iceland Deep Drilling Project for Improving Understanding of Hydrothermal Processes at Slow-Spreading Mid-Ocean Ridges, in: Diversity of Hydrothermal Systems on Slow-spreading Ocean Ridges, edited by: Rona, P., Devey, C., Dyment, J., and Murton, B., Geophysical Monograph Series 118, American Geophysical Union, 91–112, 2010.; Elders, W. A., Fri\dhleifsson, G. Ó., and Albertsson, A.: Drilling into magma and the implications of the Iceland Deep Drilling Project (IDDP) for high-temperature geothermal systems worldwide, Geothermics, 49, 111–118, 2014.; Finger, J. T. and Eichelberger, J. C.: The magma energy exploratory well, Bulletin Geothermal Resources Council, 19, 36–41, 1990.; Fournier, R. O.: Hydrothermal processes related to moment of fluid from plastic into brittle rock in the magmatic-epithermal environment, Econ. Geol., 94, 1193–1211, 1999.; Fri\dhleifsson, G. Ó. and Elders, W. A.: The Iceland Deep Drilling Project: a search for deep unconventional geothermal resources, Geothermics, 34, 269–285, 2005.; Fri\dhleifsson, G. Ó., Elders, W. A., and Bignall, G.: A plan for a 5 km-deep borehole at Reykjanes, Iceland, into the root zone of a black smoker on land, Sci. Dril., 16, 73–79, doi:10.5194/sd-16-73-2013, 2013.; Fri\dhleifsson, G. Ó., Elders, W. A., and Albertsson, A.: The concept of the Iceland deep drilling project, Geothermics, 49, 2–8, 2014.; Hashida, T., Bignall, G.,Tsuchiya, N. T., Takahashi, T., and Tanifuji, K.: Fracture generation and water rock interaction processes in supercritical deep-seated geothermal reservoirs, Geoth. Res. T., 25, 225–229, 2001.; Hauksson, T., Marksson, K., Einarsson, S. N., Karlsdóttir, A., Einarsson, Á., Möller, A., and Sigmarsson, \TH: Pilot testing of handling the fluids from the IDDP-1 exploratory geothermal well, Krafla, N.E. Iceland, Geothermics, 49, 76–82, 2014.; McKenna, J. R. and Blackwell, D. D.: Geothermal electric power from hydrocarbon fields, Geoth. Res. T., 29, 283–288, 2005.; Muffler, L. P. J. and Guffanti, M. (Eds.): Assessment of geothermal resources in the United States, US Geological Survey, Circular 790, 1979.; Pálsson, B., Hólmgeirsson, S., Gu\dhmundsson, Á., Bóasson, H. Á., Ingason, K., Sverisson, H., and \THórhallsson, S.: Drilling of the well IDDP-1, Geothermics, 49, 23–30, 2014.; White, D. E. and Williams, D. L.: Assessment of Geothermal Resources of the United States, US Geological Survey, Circular 726, 1975.; Tester, J. W. (Ed.): The future of geothermal energy: impact of enhanced geothermal energy (EGS) on the United States in the 21st century, MIT Panel Report to the US Department of Energy, 1–54, 2006.; Zierenberg, R. A., Schiffman, P., Barfod, G. H., Lesher, C. E., Marks, N., Lowenstein, J. B., Mortensen, A. K., Pope, E. C., Bird, D. K., Reed, M. H., Fri\dhleifsson, G.Ó., and Elders, W. A.: Composition and origin of rhyolite melt intersected by drilling in the Krafla geothermal field, Iceland, Contrib. Mineral. Petr., 165, 327–347, 2013.

 

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