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HARVESTING GEOTHERMAL FROM ABANDONED, SUPERDEEP DRY HOLES
Abstract
Hungary, like other eastern European countries, has suffered from an energy deficit for the past several years. Energy consumption exceeds energy production, and the country remains dependent on mostly imported fossil fuels such as oil and gas. Renewable energy usage is mostly limited to hydro and solar power generation. Government, industry and academia have paid relatively little attention to geothermal energy as a source of heat and power generation. This study aims to identify and examine the feasibility of harnessing geothermal energy from abandoned oil and gas wells. It is well known that drilling comprises at least 60% of a well?s CAPEX, so projects that could use abandoned wells would realize a significant cost savings. In 2013-2014, five superdeep wells were drilled for hydrocarbon production in Mak?, in SE Hungary. During the drilling process, measurements showed that these wells were unexpectedly hot ? 300 В°C and higher ? which caused a lot of problems. They also presented great geothermal opportunities, which were not exploited at that time. Although these wells were abandoned because they had no oil and gas potential, valuable geological and lithological well-logging information was recorded, which remains very useful. In line with the recommendations outlined by A. Toth at the 2017 Stanford Geothermal Workshop, it would be a good idea to re-evaluate these abandoned wells and see how we can best exploit their geothermal potential.
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CONVERTING ABANDONED HUNGARIAN OIL AND GAS WELLS INTO GEOTHERMAL SOURCES Aniko N. Toth, Peter Szucs, Jozsef Pap, Attila Nyikos and David K. Fenerty PROCEEDINGS, 43rd Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 12-14, 2018 SGP-TR-213
HEAT LOSSES IN A PLANNED HUNGARIAN GEOTHERMAL POWER PLANT Anikó Tóth PhD PROCEEDINGS, Thirty-First Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 30-February 1, 2006 SGP-TR-179
HEAT MINING WITHOUT WATER PRODUCTION (IN HUNGARIAN) Bobok E., Mating, B., Navratil, L. and Turzo Z. Kőolaj és Földgáz, Volume 20, (1991), 161-169
COMBINING ENERGY PRODUCTION AND MINERAL EXTRACTION – THE CHPM2030 PROJECT Hartai, E., Bodó, B., Madarász, T., Földessy, J., Norbert Németh, Kolencsikné Tóth, A., Szűcs, P., Szanyi, J., Osvald, M., Medgyes, T., Kóbor, B., Fernandez, i., Correia, V., Stein, A., Bisevac, V., Harðardóttir, V., Thorbjörnsson, I., Weisenberger, T., Rochelle, C., Lusty, P., Shaw, R., Kilpatrick, A., Ramalho, E., Matos, J., Carvalho, J., Dominguez, X., Laenen, B., Helsen, J., Csekő, A., Miklovicz, T., Tiess, G., Tiewsoh, L., Persa, D., Marincea, S., Costea, C., Fransaer, J., Palaniappan, R., Schwarz, G., Erlstrom, M., Thunholm, B., Ripa, M.:. European geologist (43), (2017), 6-9
BEVEZETÉS A KŐZETFIZIKÁBA Egerer F., Kertész P., 1993.
Toth A. and Bobok E.: Flow and Heat Transfer in Geothermal Systems, ISBN-13: 978-0128002773, Elsevier, Publisher: Elsevier; 1 edition (November 11), 2016
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