Surface test pressure required to frac the formation
Input(s)
\(F G\): Fracture Gradient \((\mathrm{psi} / \mathrm{ft})\)
\(D\): Depth \((\mathrm{ft})\)
\(\rho\): Mud Density (ppg)
Output(s)
\(P_{S T}\): Surface Test Pressure (psi)
Formula(s)
\[
P_{S T}=(F G \cdot D)-(0.052 \cdot \rho \cdot D)
\]
Reference(s)
Suman Jr, G. O., & Ellis, R. C. (1977). Cementing Handbook. World Oil, Page: 69.