Convert Micrometre squared to Microdarcy
Convert Micrometre squared (µm²) to Microdarcy (µD) instantly and accurately.
Conversion Formula
µD = µm² × 1013250
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.
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.
Quick Reference Table
| Micrometre squared (µm²) | Microdarcy (µD) |
|---|---|
| 1 µm² | 1013250 µD |
| 2 µm² | 2026500 µD |
| 5 µm² | 5066250 µD |
| 10 µm² | 10132500 µD |
| 25 µm² | 25331300 µD |
| 50 µm² | 50662500 µD |
| 100 µm² | 101325000 µD |