Convert Microdarcy to Darcy
Convert Microdarcy (µD) to Darcy (D) instantly and accurately.
Conversion Formula
D = µD × 1.000000000e-6
About Microdarcy
The microdarcy (µD) equals 10⁻⁶ D ≈ 9.869 × 10⁻¹⁹ m², used for tight gas sands, coalbed methane matrix, and low-permeability carbonates. North Sea tight sandstones: 0.01-1 µD; coalbed methane matrix: 1-100 µD; mudrock caprocks: 0.001-1 µD. 1 µD = 10⁻³ mD = 10³ nD.
About Darcy
The darcy (D) ≈ 9.869 × 10⁻¹³ m², the oilfield-standard permeability unit defined by Darcy's law: 1 D passes 1 cm³/s of 1 cP fluid through 1 cm² cross-section under a 1 atm/cm gradient. Highly permeable consolidated sandstone: 1-5 D; unconsolidated sand: 5-20 D. 1 D = 1 000 mD ≈ 0.9869 µm².
Quick Reference Table
| Microdarcy (µD) | Darcy (D) |
|---|---|
| 1 µD | 1 × 10-6 D |
| 2 µD | 2 × 10-6 D |
| 5 µD | 5 × 10-6 D |
| 10 µD | 1 × 10-5 D |
| 25 µD | 2.5 × 10-5 D |
| 50 µD | 5 × 10-5 D |
| 100 µD | 1 × 10-4 D |