Geothermal drilling in Riehen, Switzerland
2 geothermal bores at depths of 1547m and 1247m
To survey for and verify heat reserves to feed into the planned Riehen district heating system. Temperature at borehole bottom:
bore B1 71°C,
bore B2 55 °C.
Yield at a drawdown of approx. 80 m is 14 I/s for both bores.
Call for tenders for drilling operations, supervision of drilling and short-term pump tests, liaising with service companies, overall construction management.