Convert Millidarcy to Metre squared
Convert Millidarcy (mD) to Metre squared (m²) instantly and accurately.
Conversion Formula
m² = mD × 9.869232667e-16
About Millidarcy
The millidarcy (mD) equals 10⁻³ D ≈ 9.869 × 10⁻¹⁶ m², the everyday unit in petroleum reservoir engineering worldwide. Conventional sandstone reservoirs: 1-1 000 mD; carbonate reservoirs: 0.1-100 mD; economic gas recovery typically requires k ≥ 0.1 mD. Permeameter and well-test reports give results in mD. 1 mD = 10⁻³ D = 10³ µD.
About Metre squared
The square metre (m²) is the SI coherent unit of permeability (dimension [L²]) and the reference for all other permeability units. Most geological materials have k far below 1 m²; clean coarse gravel: ≈10⁻⁸ m²; shale: 10⁻²²-10⁻¹⁵ m². 1 m² = 10¹² µm² ≈ 1.013 × 10¹² D.
Quick Reference Table
| Millidarcy (mD) | Metre squared (m²) |
|---|---|
| 1 mD | 9.869 × 10-16 m² |
| 2 mD | 1.974 × 10-15 m² |
| 5 mD | 4.935 × 10-15 m² |
| 10 mD | 9.869 × 10-15 m² |
| 25 mD | 2.467 × 10-14 m² |
| 50 mD | 4.935 × 10-14 m² |
| 100 mD | 9.869 × 10-14 m² |