Convert Millimetre squared to Nanodarcy
Convert Millimetre squared (mm²) to Nanodarcy (nD) instantly and accurately.
Conversion Formula
nD = mm² × 1.013250000e+15
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.
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.
Quick Reference Table
| Millimetre squared (mm²) | Nanodarcy (nD) |
|---|---|
| 1 mm² | 1.013 × 1015 nD |
| 2 mm² | 2.026 × 1015 nD |
| 5 mm² | 5.066 × 1015 nD |
| 10 mm² | 1.013 × 1016 nD |
| 25 mm² | 2.533 × 1016 nD |
| 50 mm² | 5.066 × 1016 nD |
| 100 mm² | 1.013 × 1017 nD |