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Table 8 Applicability conditions defined for the eight new gas geothermometers developed

From: GaS_GeoT: A computer program for an effective use of newly improved gas geothermometers in predicting reliable geothermal reservoir temperatures

New gas geothermometers (GasGi) Gas concentrations (mmol/mol dry-basis) Bottom-hole temperature °C
CO2 H2S CH4 H2 BHTm
Concentration intervals [Min, Max] [Min, Max]
GasG1, GasG2, GasG6, and GasG8 [311, 3206] [0.1032, 357] [0.000059, 57] [0.1084, 477] [170, 374]
GasG3, GasG4, GasG5 and GasG7 [699, 994] [0.1032, 197] [0.000059, 57] [0.1084, 128] [170, 374]
  Input variable 1 Input variable 2 Input variable 3 Input variable 4 Input variable 5
GasG1 [− 9.17, − 0.21] [− 16.56, − 2.67] [− 9.07, 0.43]
GasG2 [2.67, 16.56] [− 0.82, 13.95] [− 2.99, 11.13]
GasG3 [− 9.17, − 1.39] [− 16.56, − 2.67] [− 9.07, − 1.77]
GasG4 [2.67, 16.56] [− 0.82, 13.95] [− 2.99, 11.13]
GasG5 [1.77, 9.07] [− 2.90, 6.14] [− 11.13, 2.99]
GasG6 [5.74, 8.07] [− 2.27, 5.88] [− 9.73, 4.04] [− 2.22, 6.17]
GasG7 [6.55, 6.90] [− 2.27, 5.28] [− 9.73, 4.04] [− 2.22, 4.85]
GasG8 [− 9.17, − 0.21] [− 16.56, − 2.67] [− 9.07, 0.43] [− 2.27, 5.88] [− 2.90, 6.14]
  1. The input variables of each new gas geothermometer are reported in Table 6