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]
|
- The input variables of each new gas geothermometer are reported in Table 6