Diffusion through cleat spacing in coalbed methane reservoirs

Input(s)

s: Coal Cleat Spacing (ft)

$\mathrm{t}$: Desorption Time from the Canister Test (day)

Output(s)

D: Diffusion Coefficient $\left(\mathrm{ft}^{2} / \mathrm{day}\right)$

Formula(s)

$$ \mathrm{D}=\frac{\mathrm{s}^{2}}{8 * \pi * \mathrm{t}} $$

Reference(s)

Ahmed, T., Paul McKinney, P. D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter:3 Page: 233.