Geothermal Energy In Tunisia- Potential Of The Southern Province

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Journal Article: Geothermal Energy In Tunisia- Potential Of The Southern Province

The aim of this paper is to obtain a first reliable evaluation of the geothermal potential of Tunisia. Thanks to various existing geological, hydrogeological and petroleum data, it was possible to distinguish the main geothermal features of the country, by evaluating both the underground temperature and the potential reservoirs. Hot springs, either the already known or newly inventoried, have been analysed and a few geothermometers applied: SiO2, Na/K and Na-K-Ca. Only the SiO2 gave plausible values with 90°C as a maximum temperature. A detailed geothermal study was also focused on the greatest sedimentary basin of the country (Southern Tunisia), where, by using the numerous petroleum exploration well information, we may: - - gather and treat some 545 temperature values, either as BHT or DST. This permitted us to estimate the geothermal gradient for each well and to construct the geothermal map, ranging from 21 to 46°C/km. BHT values were corrected by considering DST values as references. - - study the multilayered aquifer system with its main reservoirs and their main characteristics: structure, thickness, hydrodynamics, salinity and temperature.

Hamed Ben Dhia

Published Journal 
Geothermics, 1987



Hamed Ben Dhia. 1987. Geothermal Energy In Tunisia- Potential Of The Southern Province. Geothermics. (!) .