Pressure analysis - Surface pressure during drill stem test

Input(s)

$\mathrm{h}$: Total Vertical Depth $(\mathrm{ft})$

EMW: Equivalent Mud Weight for Formation Pressure (ppg)

SG: Oil Specific Gravity (fraction)

Output(s)

P: Hydrostatic Pressure (psi/bbl)

Formula(s)

$$ P=0.052 * h *(E M W-S G * 8.33) $$

Reference(s)

Formulas and Calculations for Drilling, Production and Workover, Second Edition, Lapeyrouse, Page: 138.