Dimensionless shut-in time for MDH method
Input(s)
\(\mathrm{k}\): Permeability \((\mathrm{mD})\)
\(\Delta \mathrm{t}\): Total Shut-in Time (day)
\(\emptyset\): Porosity (fraction)
\(\mu\): Viscosity \((\mathrm{cP})\)
\(c_{t}\): Total Compressibility \((1 / \mathrm{psi})\)
A: Drainage Area \(\left(\mathrm{ft}^{2}\right)\)
Output(s)
\(\Delta t_{D A}\): Dimensionless Shut-in Time (dimensionless)
Formula(s)
\[
\Delta t_{D A}=\frac{0.0002637 * k * \Delta t}{\phi * \mu * c_{t} * A}
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 59.