Convert Millidarcy to Millimetre squared
Convert Millidarcy (mD) to Millimetre squared (mm²) instantly and accurately.
Conversion Formula
mm² = mD × 9.869232667e-10
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 Millimetre squared
The millimetre squared (mm²) equals 10⁻⁶ m² ≈ 1.013 × 10⁹ D, representing extremely high permeabilities beyond the range of most geological materials. It appears in geotechnical research for open rock fractures, coarse gravel channel beds, and large-cell open-foam engineered materials. 1 mm² = 10⁶ µm² = 10⁻⁶ m².
Quick Reference Table
| Millidarcy (mD) | Millimetre squared (mm²) |
|---|---|
| 1 mD | 9.869 × 10-10 mm² |
| 2 mD | 1.974 × 10-9 mm² |
| 5 mD | 4.935 × 10-9 mm² |
| 10 mD | 9.869 × 10-9 mm² |
| 25 mD | 2.467 × 10-8 mm² |
| 50 mD | 4.935 × 10-8 mm² |
| 100 mD | 9.869 × 10-8 mm² |