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Table 2 Component properties tuned for 150 °C, 76 MPa, and 105,000 ppm

From: Potential assessment of methane and heat production from geopressured–geothermal aquifers

Component name CH4 H2O
Critical pressure, atm 45.4 217.6
Critical temperature, K 190.6 647.3
Critical volume, m3/k-mole 0.099 0.056
Molecular wt., g/g-mole 16.043 19.421
Acentric factor 0.008 0.344
Parachor 77 52
Omega A 0.4572 0.4572
Omega B 0.077,796 0.077,796
Volume shift (at reservoir conditions) −0.15400 0.21591
Volume shift (at surface conditions) 0.0 0.15859
Critical volume (viscosity), m3/k-mole 0.092217 0.04941
Binary interaction coefficient corresponding to H2O 0.0565 0