Table 9 Table reservoir classification of conglomerate reservoir.
From: Water-flooding characteristics of lithologic reservoir in Ordos basin
Reservoir types | Mercury injection parameters | Microcosmic pore structure parameters | |||||||
|---|---|---|---|---|---|---|---|---|---|
Maximum SHg/% | The mercury withdrawal efficiency/% | Displacement pressure/MPa | Median radius/µm | Median pressure/MPa | Sorting coefficient | Skewness | Porosity/% | Permeability/mD | |
Types I | \(\frac{69.485}{{64.28\sim 74.70}}\) | \(\frac{19.395}{{16.68\sim 22.11}}\) | \(\frac{1.22}{{0.60\sim 1.84}}\) | \(\frac{0.045}{{0.03\sim 0.06}}\) | \(\frac{19.52}{{12.82\sim 26.22}}\) | \(\frac{2.065}{{1.63\sim 2}}\) | \(\frac{0.41}{{0.37\sim 0.45}}\) | \(\frac{5.71}{{5.38\sim 6.04}}\) | \(\frac{0.18}{{0.10\sim 0.26}}\) |
Types II | \(\frac{62.885}{{51.07\sim 74.70}}\) | \(\frac{23.44}{{22.11\sim 24.77}}\) | \(\frac{0.895}{{0.60\sim 1.19}}\) | \(\frac{0.035}{{0.01\sim 0.06}}\) | \(\frac{59.66}{{12.82\sim 106.5}}\) | \(\frac{2.03}{{1.56\sim 2.50}}\) | \(\frac{0.22}{{0.07\sim 0.37}}\) | \(\frac{3.93}{{1.82\sim 6.04}}\) | \(\frac{0.155}{{0.05\sim 0.26}}\) |
Types III | \(\frac{66.1055}{{1.07\sim 81.14}}\) | \(\frac{25.29}{{24.77\sim 25.81}}\) | \(\frac{0.76}{{0.33\sim 1.19}}\) | \(\frac{0.18}{{0.01\sim 0.35}}\) | \(\frac{54.31}{{2.12\sim 106.5}}\) | \(\frac{1.83}{{1.56\sim 2.10}}\) | \(\frac{0.28}{{0.07\sim 0.49}}\) | \(\frac{{{6}.{495}}}{{{1}.{82}\sim {11}.{17}}}\) | \(\frac{0.235}{{0.05\sim 0.42}}\) |
