Hydrostatic pulling wet pipe out of the hole

Input(s)

NS: Number of Stands Pulled (number)

Lavg: Average length per stand (ft)

mw: Mud Weight (ppg)

cc: Casing Capacity (bbl/ft)

$\mathrm{pd}$: Pipe disp. (bbl/ft)

pc: Pipe capacity. (bbl/ft)

Output(s)

BD: Barrel Displaced (bbl)

HP: Hydrostatic Pressure Decrease (Pulling Wet Pipe out of the Hole) (psi)

Formula(s)

Reference(s)

Formulas and Calculations for Drilling, Production and Workover, Second Edition, Lapeyrouse, Page: 21.