Table 2 Tracer injection parameters.
Parameter | Value |
|---|---|
Injection period | 10 days |
Injection depth | ∼450 m |
Average air injection rate | 47 m3 min−1 (2100 moles min−1) |
Chemical tracer | Freon 12B2 (molecular weight, 210) |
Co-injection rate | ∼0.0303 kg min−1 (0.144 moles min−1) |
Average injected tracer concentration | 6.85 × 10−5 (68.5 ppm) |
Chimney pressurization during injection | 40 mbar |
