Convert Millidarcy to Nanodarcy
Convert Millidarcy (mD) to Nanodarcy (nD) instantly and accurately.
Conversion Formula
nD = mD × 1000000
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 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
| Millidarcy (mD) | Nanodarcy (nD) |
|---|---|
| 1 mD | 1000000 nD |
| 2 mD | 2000000 nD |
| 5 mD | 5000000 nD |
| 10 mD | 10000000 nD |
| 25 mD | 25000000 nD |
| 50 mD | 50000000 nD |
| 100 mD | 100000000 nD |