Table 1 Estimate of the injection temperature, obtained by extrapolation of values compiled in a literature review of several geothermal wells62. The linear extrapolation from literature values (with the estimated average temperature of Low Enthalpy systems of \(14{0}\,^{\circ}{\rm{C}}\)) leads to the value of \(\Delta T\,=\,32{2}\,^{\circ }{\rm{C}}\) for the SC case

From: The risks of long-term re-injection in supercritical geothermal systems

Category \({T}_{\text{min}}\) \({T}_{\text{max}}\) \(< {T} > \) \(\Delta T\)
  \({}^{\circ }{\rm{C}}\) \({}^{\circ }{\rm{C}}\)  \({}^{\circ }{\rm{C}}\)  \({}^{\circ }{\rm{C}}\)
Hot water \(-\) \(220\) \(140\) \(55\)
Low enthalpy \(220\) \(250\) \(235\) \(131\)
Medium enthalpy \(250\) \(300\) \(275\) \(186\)
High enthalpy \(250\) \(330\) \(290\) \(169\)
Supercritical \(-\) \(-\) \(457\) \(322\)