Drilling EngineeringMud and Cementing
Yield of Clays as Drilling Fluids Formula
Yield of Clays as Drilling Fluids calculates efficiency of selected clay for mud and cementing workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (M_clay) 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, E_clay equals 20 bbl/tonne.
M_claytonne/bbl
0.05
Inputs
M_clay
tonne/bblClay Required per Barrel of 15 cP Mud
Outputs
E_clay
bbl/tonne
Efficiency of Selected Clay
M_clay
tonne/bbl
Clay Required per Barrel of 15 cP Mud
Source and review
reviewedDrilling Fluids Lab Course Notes, Altun, G. (2014)
Altun, G. 2013-2014. Drilling Fluids Lab Course Notes, ITU Petroleum and Natural Gas Engineering, Experiment 1, Page 9.
Source