Page 258 - Formulas and Calculations for Petroleum Engineering

Production engineering formulas and calculations Chapter 4 251

Formula(s)

p ffiffi
V ¼ V spt +2C w t

Reference: Williams, B. B., Gidley, J. L., & Schechter, R. S. (1979). Acidizing fundamentals. Henry L. Doherty Memorial
Fund of AIME, Society of Petroleum Engineers of AIME, Page: 42.

4.104 Volume of rock dissolved per unit volume of acid (acidizing)

Input(s)

ρ 15 percent HCl : Density of 15 Weight percent HCl Solution, (g/cc)
: Density of Calcium Carbonate (g/cc)
ρ CaCO 3
β 15 percent HCl : Mass of Dissolved Rock with 15 percent of HCl (g/g)

Output(s)

X 15 : Acid Dissolving Power (cc/cc)

Formula(s)

ρ β
X ¼ 15 percent HCl 15 percent HCl
15 ρ
CaCO 3
Reference: Williams, B. B., Gidley, J. L., & Schechter, R. S. (1979). Acidizing fundamentals. Henry L. Doherty Memorial
Fund of AIME, Society of Petroleum Engineers of AIME, Page: 13.

4.105 Water quantity that dilutes the original brine with assumed density
(two-salt systems)

Input(s)
V d : Volume of Diluted Brine (bbl)
ρ i : Density of initial, undiluted Brine (lbm/bbl)
ρ d : Density of Diluted Brine (lbm/bbl)
ρ 8.33 : Density of Water diluting the Original Brine (lbm/bbl)

Output(s)

V 8.33 : Volume of Water Diluting the Original Brine (bbl)

Formula(s)

ð ρ ρ Þ
i
d
V ¼ V Þ
ð
8:33 d ρ ρ
ð i 8:33 Þ
Reference: Bridges, K. L. (2000). Completion and Workover Fluids (Vol. 19). Society of Petroleum Engineers, Page: 56.