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Field Calculators
In US field units as used in IWCF exams. Enter your values and the result updates instantly.
Hydrostatic Pressure
HP (psi) = 0.052 × MW (ppg) × TVD (ft)
ppg
ft
Kill Mud Weight (KMW)
KMW = OMW + SIDPP ÷ (0.052 × TVD)
ICP = SCR + SIDPP
FCP = SCR × KMW ÷ OMW
ICP = SCR + SIDPP
FCP = SCR × KMW ÷ OMW
ppg
psi
ft
psi
We use SIDPP instead of SICP. KMW is rounded up to the nearest 0.1 ppg as per an IWCF kill sheet, and FCP is calculated using the rounded value. SCR is the slow circulating pressure recorded before the Kick. For training only; follow your company procedures.
MAASP
MAASP = (LOT EMW − MW) × 0.052 × Shoe TVD
ppg
ppg
ft
MAASP changes whenever the mud weight in the well changes.
GOR and Water Cut
GOR = Qg ÷ Qo · WC = Qw ÷ (Qo + Qw)
Sm³/d
m³/d
m³/d
Unit Conversion
1 bar = 14.5038 psi · SG = ppg ÷ 8.33
psi
ppg
Results are for learning and quick verification; they do not replace the official kill sheet at your site.