Convert Nanodarcy to Millimetre squared
Convert Nanodarcy (nD) to Millimetre squared (mm²) instantly and accurately.
Conversion Formula
mm² = nD × 9.869232667e-16
About Nanodarcy
The nanodarcy (nD) equals 10⁻⁹ D ≈ 9.869 × 10⁻²² m², the standard permeability unit for ultra-tight unconventional reservoirs. Barnett, Marcellus, and Eagle Ford shale matrix: 1-1 000 nD; crystalline basement rocks and caprocks: below 1 nD. Measured by pulse-decay or GRI crushed-rock methods. 1 nD = 10⁻³ µD = 10⁻⁶ mD.
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
| Nanodarcy (nD) | Millimetre squared (mm²) |
|---|---|
| 1 nD | 9.869 × 10-16 mm² |
| 2 nD | 1.974 × 10-15 mm² |
| 5 nD | 4.935 × 10-15 mm² |
| 10 nD | 9.869 × 10-15 mm² |
| 25 nD | 2.467 × 10-14 mm² |
| 50 nD | 4.935 × 10-14 mm² |
| 100 nD | 9.869 × 10-14 mm² |