Fluid Level Calculation in Oil Wells Fluid Level Calculation in Oil Wells M3Engi (Electrical) (OP) 19 Oct 17 16:30 hi, I try to make a software that calculates the oil level in oil wells. I have a variables from downhole sensor and VSD. Any idea of equations to implement? RE: Fluid Level Calculation in Oil Wells sraesttam (Petroleum) 20 Oct 17 18:14 M3Engi, by oil level do you mean fluid level over pump? If so, you can roughly calculate the fluid level over pump by doubling the pump intake pressure. Though, if you wanted to get to a more accurate value, you can take the pump intake pressure value and subtract the casing pressure. Then plug that value into the following equation: Head (Feet) = (2.309xPSI)/Specific Gravity of the Fluid This method ignores the weight of the column of gas.