Demulsifier Dosing
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Demulsifier Dosing Calculator

Continuous & Batch Crude Emulsion Treating per GPSA §19

Compute demulsifier dose rate (continuous or batch), pump-sizing, and annual cost for crude-oil emulsion treating. Applies bottle-test-to-field temperature correction, water-cut, asphaltene, and H₂S adjustments. Used by production engineers, chemical vendors, and treater specialists.

Process Stream

BOPD
vol %
vol %
wt %
mol %

Chemistry & Dose

ppm
Use lab bottle-test value if known
°F
°F
%
lb/gal

Economics / Batch

$/gal
bbl
gal / 1000 bbl

📚 Learn the Theory

Emulsion stability, demulsifier chemistry, bottle-test interpretation, field-deployment optimization.

Read Engineering Guide →

Dosing Method

Continuous dose flow:

gal/day = Qcrude(BPD) · 42 · ppm / (106 · strength)

Bottle → field T correction (Arrhenius half-power):

dosefield = dosebottle · √(Tbottle°R / Tfield°R)

Water-cut correction (only WC > 30%):

dosewc = dosefield · (1 + 0.5·(WC/30 − 1))

Asphaltene + H₂S corrections:

dosefinal = dosewc · (1 + 0.02·asphaltene%) · (1 + 0.005·H₂Smol%·100)

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