Micro Turbine Drilling – MTD

N. Geißler, F. Garsche, V. Samus, R. Bracke. Der Geotherimie Kongress 2021 (DGK), 30 November- 2 December 2021, Virtual.


In geothermal drilling, there is a high risk that the hydraulic connectivity to the surrounding reservoir rock is lower than expected, resulting in low production rates and thus poor efficiency. Fraunhofer IEG has therefore developed the innovative drilling technology Micro Turbine Drilling – MTD to solve this problem. This technology makes it possible to drill additional branches – so-called micro sidetracks – from the main well at low cost in order to improve the connectivity.

Photo credits: Nic McPhee