Mud rheology - Power-law model - Consistency index
Input(s)
\(\theta_{\mathrm{a}}\): Fann Dial Reading at \(300 \mathrm{Rpm}(\mathrm{cP})\)
\(\mathrm{n}\): Power-Law index (dimensionless)
Output(s)
\(\mathrm{K}\): Consistency index \((\mathrm{cP})\)
Formula(s)
\[
\mathrm{K}=\frac{510 * \theta_{\mathrm{a}}}{511^{\mathrm{n}}}
\]
Reference(s)
Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015. Houston, Texas, Page: 194.