Tank Volume from Gauge Using a Polynomial Equation Calculation

The Polynomial Equation option is used for tanks where the relationship between the gauge and the associated inventory is expressed as a polynomial equation instead of a strapping table. The total observed volume is calculated as shown here.

Where:

ai = Coefficients of the polynomial equation for the specific tank (i = 0,1,2,3,4)

H = Gauge reading

Q = Total observed mass or volume for gauge reading

EXAMPLE: Tank Volume from Gauge Using a Polynomial Equation Calculation

The tank gauge is 1 ft-1 in (H= 1.083 ft ), the volume unit of measure is bbl, and the coefficients for this tank are the following.

a0 = 322.1

a1 = 23.4

a2 = -1.1324

a3 = 0.345

a4 = -0.000234

Substituting values, the calculated volume is:

Q = 346.56 bbls

See Tank Volume from Gauge Using a Polynomial Equation Calculation for details on how to configure this calculation.