HAS has drilled Germany’s deepest well in granite subsoil
It took HAS only 62 days (actual drilling time) to drill the thermal well close to the lake „Weißenstädter See“ in the eastern part of Germany. The fact that the well could be completed so fast is an especially great success because this well was drilled entirely in granite subsoil. With a final depth of 1.835 m, this well is the deepest well that has ever been drilled in this hard soil in Germany.
The well is a basic requirement for the construction of a thermal SPA in Weißenstadt. Its water has the temperature and mineral content necessary for such a bath (> 22°C, > 0,5 g/l). The hot water is artesian, meaning that no pumps are required to extract it from the depths. It comes to the surface by itself due to the natural pressure of the groundwater. Furthermore, this water can be recognized as healing water, due to its content of fluoride. The former Home Secretary Dr. Hans-Peter Friedrich was able to get an impression of the works in progress when visiting the construction site in September last year.
The mineralisation of the water is described as extraordinary for a well drilled in purely granite surroundings: the water is saline (with a content of sodium and chloride) as well as sulphurous (sulphate and hydro carbonate). The most important ions, which turn water into healing water, are given in Weißenstadt as well.
“Weißenstadt is well on the way to be able to call itself “Bad Weißenstadt” (SPA) soon. The fact that we were able to contribute to this, makes us very happy.” Gerald Enders, site manager H Anger’s Söhne
The well of 1835 m leads through water bearing fissures over its entire length, which means that mixed waters are produced from different layers of the soil. At the deepest point of the well, the water has a temperature of more than 53°C. At the same time, the well is stable in the rock, which means that, apart from the section sealed by the conductor pipe, no casing is necessary up to 327 m.