Slope of Horner plot in pressure buildup test
Input(s)
\(Q_{o}\): Stabilized Well Flow Rate before Shut-in (STB/day)
\(\mu_{o}\): Oil Viscosity (cP)
\(B_{o}\): Oil Formation Volume Factor (bbl/STB)
\(\mathrm{k}\): Permeability \((\mathrm{mD})\)
\(\mathrm{h}\): Thickness \((\mathrm{ft})\)
Output(s)
m: Slope (psi/cycle)
Formula(s)
\[
m=\frac{162.6 * Q_{o} * \mu_{o} * B_{o}}{k * h}
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 54.