Drilling EngineeringMud and Cementing
Maximum Recommended Low-Gravity Solids Formula
Maximum Recommended Low-Gravity Solids calculates maximum recommended low-gravity solids for mud and cementing workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (SF, MW) 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, LGS equals 14.131986 % by volume.
SF% by volume
20.834
MWppg
12
Inputs
SF
% by volumeMaximum recommended solids fraction
MW
ppgMud weight
Outputs
LGS
% by volume
Maximum recommended low-gravity solids
SF
% by volume
Maximum recommended solids fraction
MW
ppg
Mud weight
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 95.
Source