Geothermal Energy Production From Porous Sediments In Hungary

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Journal Article: Geothermal Energy Production From Porous Sediments In Hungary

Abstract
Hyperthermal areas are situated along the worldwide Tertiary or Alpine orogenic belt. Two types of productive geothermal formation can be distinguished: 1. a) In connection with recent or Quaternary volcanic or subvolcanic processes. 2. b) Subsidence basins with high heat flow. Both types have economic value only, if the hyperthermal areas are in connection with hydraulic systems. In the first case the hydraulic system is made up of interconnected fractures in which the meteoric water freely circulates. In the second case the hydraulic system is made up of brines in the sediments of the basin. The Hungarian basin of about 92,000 km2 contains 160,000 km3 Tertiary sediments. The pore volume of the sands and sandstones is as much as 4000 km3 with an average temperature of 100°C. The high temperature gradient, 60-70°C/km, is due to the high terrestrial heat flow in the Hungarian basin. Present production amounts to 100 m3/min with an average temperature of 84°C from an average depth of 1800 m. The reservoir production techniques and economic conditions are described.

Author 
T. Boldizsar








Published Journal 
Geothermics, 1970





DOI 
Not Provided
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Citation

T. Boldizsar. 1970. Geothermal Energy Production From Porous Sediments In Hungary. Geothermics. (!) .