Volume of Liquid Oil plus Water Required to Prepare a Desired Volume of Mud Formula
Volume of Liquid Oil plus Water Required to Prepare a Desired Volume of Mud calculates starting liquid volume required for mud and cementing workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (W_1, W_2, DV) are known and the assumptions behind the cited mud and cementing relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, SV equals 433.962264 bbl.
8.5
12
500
Inputs
W_1
ppgInitial Density of Oil-Water Mix
W_2
ppgDesired Density of Oil-Water Mix
DV
bblDesired Final Mud Volume
Outputs
SV
Starting Liquid Volume Required
W_2
Desired Density of Oil-Water Mix
DV
Desired Final Mud Volume
W_1
Initial Density of Oil-Water Mix
Source and review
reviewedFormulas and Calculations for Drilling, Production and Workover, Lapeyrouse, N.J. (2002)
Lapeyrouse, N.J. 2002. Formulas and Calculations for Drilling, Production and Workover, 2nd Edition, Gulf Professional Publishing, Page 88.
Source