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)

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.