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Quantitative prediction of oil saturation of unconsolidated sandstone reservoir based on time-lapse seismic “relative difference method”: Taking Zeta oil field in West Africa as an example
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LU Hongmei,XU Hai,WO Yujin,GU Ning
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Table 1 Comparison of parameters between the initial full-oil model and the complete fluid displacement.
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Model
state | Kfl/Pa | Ksat/Pa | Vp of sandstone/
(m?s-1) | Density of sandstone/(g?cm-3) | p-wave impedance of
sandstone/(103 kg?m-2?s-1) | Vp of shale/
(m?s-1) | Density of shale/(g?cm-3) | p-wave impedance of shale/(103 kg?m-2?s-1) | | Full-oil | 1.22 | 9.62 | 2 733 | 2.133 | 5 829 | 2 696 | 2.354 | 6 346 | | Full-water | 2.28 | 11.95 | 2 900 | 2.173 | 6 302 | 2 696 | 2.354 | 6 346 |
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