Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

摘要: Precise knowledge of the subsurface thermal field plays a key role in assessment geothermal targets. Unfortunately, deep underground temperature data is generally scarce and matter research. To achieve first estimates for temperatures, steady-state conductive modeling commonly applied. Thereby rock conductivity an essential parameter, which usually determined under ambient laboratory conditions. arrive with situ conductivity, values need to be corrected pressure. In this paper, we apply different conversion functions correction study impact on resultant heat flow prognoses synthetic, upper crustal sedimentary magmatic scenario along 2-D geological cross sections. Application results maximum prognosis uncertainties about 8 °C 55 °C at 2 km depth 8 km depth, respectively. The effect positively correlates magnitude basal used modeling. contrast resulting surface only minor affected by addition, modeled strongly dependent type sequence application pressure equations.