Articles | Volume 58
10 Jan 2023
 | 10 Jan 2023

Inverse flow zone characterization using distributed temperature sensing in a deep geothermal production well located in the Southern German Molasse Basin

Felix Schölderle, Daniela Pfrang, and Kai Zosseder

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Cited articles

Bohnsack, D., Potten, M., Pfrang, D., Wolpert, P., and Zosseder, K.: Porosity–permeability relationship derived from Upper Jurassic carbonate rock cores to assess the regional hydraulic matrix properties of the Malm reservoir in the South German Molasse Basin, Geotherm. Energy, 8, 12,, 2020. 
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Codo, F. P., Adomou, A., and Adanhounmè, V.: Analytical Method for Calculation of Temperature of the Produced Water in Geothermal Wells, Int. J. Sci. Eng. Res., 3, 1–7, 2012. 
Cooper, J. R. and Dooley, R. B.: The International Association for the Properties of Water and Steam, 1–49, Lucerne, Switzerland, (last access: 1 June 2022), 2007. 
Eppelbaum, L., Kutasov, I., and Pilchin, A.: Applied Geothermics, Springer Berlin Heidelberg,, 2014. 
Short summary
In 2019, a fiber optic cable was installed in the middle of a deep geothermal production well to the reservoir in Munich, Germany. This cable hangs freely below the pump and allows continuous measurements of the temperature at every meter of the cable. The well was put into operation for the first time in the summer of 2021. We used the fiber optic cable to monitor the temperature profile during production in the reservoir and to quantitatively interpret the flow zones using an inverse model.