Convert Nanodarcy to Metre squared
Convert Nanodarcy (nD) to Metre squared (m²) instantly and accurately.
Conversion Formula
m² = nD × 9.869232667e-22
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 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
| Nanodarcy (nD) | Metre squared (m²) |
|---|---|
| 1 nD | 9.869 × 10-22 m² |
| 2 nD | 1.974 × 10-21 m² |
| 5 nD | 4.935 × 10-21 m² |
| 10 nD | 9.869 × 10-21 m² |
| 25 nD | 2.467 × 10-20 m² |
| 50 nD | 4.935 × 10-20 m² |
| 100 nD | 9.869 × 10-20 m² |