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1 Przegląd Geologiczny

1 2024

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Otwór geotermalny LZT-1 w Lądku-Zdroju – obiecujący potencjał, niewykorzystane możliwości

Kiełczawa Barbara, Wąsik Mirosław, Szostak Karolina, Rasała Marek, Ciężkowski Wojciech

Przegląd Geologiczny

2024

Vol. 72, nr 4

174--181

In the years 2018-2019, in Lądek-Zdrój, about 700 metres northwest of the existing thermal water intakes, a well was drilled to a depth of 2.5km. TheinvestorwastheMunicipalityofLądek-Zdrójandthewellislocatedwithin the mining area designated for the structure of therapeutic thermal waters. The article presents the results of the work and research conducted (petrographic, thermal conductivity and permeability of rocks, concentration of radioactive elements, physicochemical properties of water, pumping test, etc.). Potentially, the well's discharge rate could be approximately 60 m3/h with a depression of about 70 metres. During the pumping test, the impact of the LZT-1 well on the spa intakes was observed. As a result, complete hydrodynamic tests were not performed, and the exploitable resources of this intake were not determined. The temperature at the bottom of the heated (period of time once mud circulation has stopped) well is 58.9oC, and the water exhibits properties similar to the therapeutic thermal waters used in the health resort. Long-term observations and studies of the regime of the Lądek-Zdrój thermal water deposit show that the development of optimal operating parameters for the LZT-1 well and spa intakes would make it possible to increase in the total amount of extracted water by approximately 25%, as well as with a higher temperature. This would enable the utilization of the heat from all intakes. Unfortunately, the well remains unused to this day.