Average fracture permeability (pseudo-steady state case for pressure build-up test)

Input(s)

q: Flow Rate $(\mathrm{bbl} / \mathrm{d})$

$\mu$: Viscosity (cP)

B: Formation Volume Factor (BBL/STB)

$\mathrm{m}$: Slope of Horner Plot (psi/cycles)

$\mathrm{h}$: Formation Thickness (ft)

Output(s)

$k_{f:} \quad$ Average Fracture Permeability $(\mathrm{mD})$

Formula(s)

$$ k_{f}=162.6 * q * B * \frac{\mu}{m * h} $$

Notes: Horner Plot Analysis (Semi-Log Plot).

Reference(s)

Lee, J., Rollins, J. B., \& Spivey, J. P. (2003). Pressure Transient Testing (Vol. 9). Richardson, Texas: Society of Petroleum Engineers, Page: 107.