Convert Microdarcy to Micrometre squared
Convert Microdarcy (µD) to Micrometre squared (µm²) instantly and accurately.
Conversion Formula
µm² = µD × 9.869232667e-7
About Microdarcy
The microdarcy (µD) equals 10⁻⁶ D ≈ 9.869 × 10⁻¹⁹ m², used for tight gas sands, coalbed methane matrix, and low-permeability carbonates. North Sea tight sandstones: 0.01-1 µD; coalbed methane matrix: 1-100 µD; mudrock caprocks: 0.001-1 µD. 1 µD = 10⁻³ mD = 10³ nD.
About Micrometre squared
The micrometre squared (µm²) equals 10⁻¹² m², the SI-consistent permeability unit used in European reservoir standards and ISO documents. 1 µm² ≈ 1.0133 D - numerically close to but distinct from the darcy. Clean gravel: 1-10 µm²; clean sandstone: 10⁻³-0.1 µm². 1 µm² = 10⁶ nm² = 10⁻⁶ mm².
Quick Reference Table
| Microdarcy (µD) | Micrometre squared (µm²) |
|---|---|
| 1 µD | 9.869 × 10-7 µm² |
| 2 µD | 1.974 × 10-6 µm² |
| 5 µD | 4.935 × 10-6 µm² |
| 10 µD | 9.869 × 10-6 µm² |
| 25 µD | 2.467 × 10-5 µm² |
| 50 µD | 4.935 × 10-5 µm² |
| 100 µD | 9.869 × 10-5 µm² |