All issues Volume 76 (2021) Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 76 (2021) 1 Full HTMLZonation confidence for C1, C2, R and C3 zones in A, B and C wells.
| Zone | Ratio | % zonation confidence |
||
|---|---|---|---|---|
| Ratio | Zone | All zones | ||
| C1 | Si/Zr > 0.22 | 86.2 | 76.2 | 85.9 |
| Si/K > 19 | 66.2 | |||
| C2 | Si/Zr < 0.22 | 91.2 | 92.6 | |
| 1.1 < Sr/Ca < 1.6 | 99.3 | |||
| Zr/Th < 5.5 | 80 | |||
| Si/K < 19 | 100 | |||
| R | Si/Zr > 0.22 | 89.5 | 82.9 | |
| Si/K > 19 | 83 | |||
| Sr/Ca < 1.1 | 92.1 | |||
| 5.5 < Zr/Th < 11 | 67.1 | |||
| C3 | Si/Zr < 0.22 | 99.4 | 91.9 | |
| Si/K < 19 | 93.5 | |||
| Sr/Ca > 1.1 | 96.1 | |||
| 5.5 < Zr/Th < 11 | 78.4 | |||
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