Characteristics and sustainable utilisation prospects of geothermal waters of the liassic formations in the Mogilno–Lodz Trough, Poland

Abstract

Mogilno-Lodz Trough is located in central Poland. It is structural basin filled with Triassic-to-Quaternary sediments. Lower Jurassic formations in Poland have one of the best conditions for the heating purposes. Presently, on the area of the Trough, no geothermal plant operates, which utilises geothermal waters from Lower Jurassic formations. Sustainable use of geothermal waters covers, e.g., effective use of thermal energy from waters, before they are injected back to the deposit. Such sustainable use can be achieved in cascaded systems, utilising thermal energy of waters, which gradually lose temperature at following stages of cascaded systems. Geothermal waters and energy occurring in Lower Jurassic formations in Mogilno-Lodz Trough have been analysed in terms of chemical composition and temperature parameters. A dominant type of water is chloridesodium waters, with specific components contents, such as iodine, bromine, and iron. Lower Jurassic formations are deposited at different depths, which affects, to a high extent, water mineralization and temperature, as well as some elements contents. It has been demonstrated which parameters are decisive about a possibility of using them at particular stages of a cascaded system and where one should expect to find suitable conditions for particular applications.

Conjunctive uses of the geothermal water resources from lower cretaceous formations in the Mogilno–Lodz trough, Poland

“…The aim of this work is to indicate the following possibilities and to determine the most prospective applications for the regions (zones) of the Mogilno-Lodz trough in the Lower Cretaceous formations, after comparing hydrogeological conditions (chemical parameters and thermal parameters of waters and of the reservoir). Similar analyses have been done previously for underlaying layers-the Lower Jurassic formations (Halaj 2018).…”

Subsalt Rotliegend Sediments—A New Challenge for Geothermal Systems in Poland

“…In the area of the MLT two operating GeoDH plants are located in the towns of Uniejów and Poddębice. Both of them use geothermal waters from a Lower Cretaceous aquifer [61,62,65,66,80]. Detailed operating parameters of the heat plant in the Mogilno-Łódź Basin are presented in Table 1.…”

Subregion-Scale Geothermal Delineation Based on Image Analysis Using Reflection Seismology and Well Data with an Outlook for Land Use

“…Geothermal energy utilisation is considered to be a renewable resource generally with low environmental impact, and increasing its ratio in the energy mix is an important part of energy strategies [1,2]. Maximising efficiency and minimising environmental effectsmainly the significant water level drop-the widest possible utilisation should be carried out [3][4][5][6][7][8]. One of the ways to ensure this is to rely on geological and geothermal studies on regional and subregional scales and its incorporation into spatial planning linking together with further socio-economic and land-use characteristics.…”