Page 213 - Formulas and Calculations for Petroleum Engineering

206 Formulas and calculations for petroleum engineering

Formula(s)

V 42gal=bblÞ ρðÞ C C
ð
i i sf si
m ¼
s
P mC
s sf
Reference: Bridges, K. L. (2000). Completion and Workover Fluids (Vol. 19). Society of Petroleum Engineers, Page: 54.

4.4 Additive crystalline salt amount to increase the density—Method II
(single-salt systems)

Input(s)
V i : Volume of Initial Brine Formulation (bbl)
V f : Volume of Brine Following the Adjustment (bbl)
C sf : Concentration of Salt in Final Brine Formulation (lbm/bbl)
C si : Concentration of Salt in Initial Brine Formulation (lbm/bbl)

Output(s)
m s : Additional Salt need to raise the Density (lbm)

Formula(s)

m ¼ C V C V
s sf f si i
Reference: Bridges, K. L. (2000). Completion and Workover Fluids (Vol. 19). Society of Petroleum Engineers, Page: 55.

4.5 Additive crystalline salt and water amount to increase the density—Method I
(two-salt systems)
Input(s)

V i : Volume of Initial Brine (bbl)
V w : Total Water Volume to add to achieve the Final Brine Density (bbl)
C msf : Concentration of More Soluble Salt in Final Brine Formulation (%) (lbm/bbl)
C lsf : Concentration of Less Soluble Salt in Final Brine Formulation (lbm/bbl)
C msi : Concentration of More Soluble Salt in Initial Brine Formulation (lbm/bbl)
C lsi : Concentration of Less Soluble Salt in Initial Brine Formulation (lbm/bbl)
W i : Water Fraction in Initial Brine Formulation (fraction)
W f : Water Fraction in Final Brine Formulation (fraction)
V f : Final Volume of Brine after Adjustment (bbl)

Output(s)

m ms : Additional More Soluble Salt need to raise the Brine Density (lbm)