From: Theory and practice of micro water-oil displacement efficiency based on mathematical models
\(r_{\min}\), μm | \(r_{\max}\), μm | \(\delta_{R}\), m | \(r_{e}\), m | \(r_{w}\), m | θ | σ | \(s_{\mathrm{wc}}\) |
---|---|---|---|---|---|---|---|
70 | 2 | 0.1 | 300 | 0.2 | \(\frac{3}{4}\pi\) | 0.025 \(\mathrm{N} \cdot \mathrm{m}^{ - 1}\) | 0.15 |