Basic Calculations

The average mass flow from a geothermal well into a flash reservoir varies depending on factors such as well depth, reservoir characteristics, and local pressure and temperature conditions. However, as a general guideline:

1. • High enthalpy reservoirs (200–300 °C or more):

   • Wells typically have mass flows ranging from 20 to 100 tons per hour (t/h).

   • In rare cases, flow can exceed 200 t/h, especially in highly productive fields such as those in Iceland or Indonesia.

   • Medium enthalpy reservoirs (150–200 °C):

   • Typical mass flow is lower, generally between 10 and 50 t/h.