Solids Analysis for High-Salt Content Muds Formula
Solids Analysis for High-Salt Content Muds calculates salt water volume percentage for mud and cementing workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (C_Cl, P_vw, P_vo, S_cec, M_cec, 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, SW equals 37.058 percent.
100000
35
10
10
10
16
Inputs
C_Cl
ppmChloride Concentration
P_vw
percentWater Volume Percentage
P_vo
percentOil Volume Percentage
S_cec
lb/bblCation Exchange Capacity of Shale
M_cec
lb/bblCation Exchange Capacity of Mud
MW
ppgMud Weight
Outputs
SW
Salt Water Volume Percentage
SS
Suspended Solids Volume Percentage
ASG_sw
Average Specific Gravity of Salt Water
ASG
Average Specific Gravity of Solids
LGS
Low-Gravity Solids Volume Percentage
P_b
Barite Concentration
P_be
Bentonite Concentration
P_ds
Drilled Solids Concentration
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 91.
Source