Average wellbore fluid density (completion and workover fluids)
Input(s)
\(\rho_{m}\): Measured Ambient (or Surface) Fluid Density (lbm/bbl)
\(\Delta \rho_{i}\): Incremental Wellbore Fluid Density Change \((\mathrm{lbm} / \mathrm{bbl})\)
\(n\) : Number of Linear Depth intervals (dimensionless)
Output(s)
\(\bar{\rho}\): Average Wellbore Fluid Density \((\mathrm{lbm} / \mathrm{bbl})\)
Formula(s)
\[
\bar{\rho}=\rho_{m}-\left[\sum_{i=1}^{n} \frac{\left(\Delta \rho_{i}\right)}{n}-1\right]
\]
Reference(s)
Bridges, K. L. (2000). Completion and Workover Fluids (Vol. 19). Society of Petroleum Engineers, Page: 46.