Amount of additive required to achieve a required cement slurry density

Input(s)

ρ\rho: Required Slurry Density (lb/gal)

SGc\mathrm{S}_{\mathrm{Gc}}: Specific Gravity of Cement (unitless)

C: Water Requirement of Cement (gal/stroke)

A: Water Requirement of Additive (gal/stroke)

SGa\mathrm{S}_{\mathrm{Ga}}: Specific Gravity of Additive (unitless)

Output(s)

x: Amount of Additive Required (lb/stroke)

Formula(s)

x=(ρ11.207983 SGc)+(ρC)94(8.33C)(1+(A100))(ρ8.33 SGa)(ρ+A100)\mathrm{x}=\frac{\left(\frac{\rho * 11.207983}{\mathrm{~S}_{\mathrm{Gc}}}\right)+(\rho * \mathrm{C})-94-(8.33 * \mathrm{C})}{\left(1+\left(\frac{\mathrm{A}}{100}\right)\right)-\left(\frac{\rho}{8.33 * \mathrm{~S}_{\mathrm{Ga}}}\right)-\left(\rho+\frac{\mathrm{A}}{100}\right)}

Reference(s)

Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 53.


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