BAKER HUGHES - Drilling Fluids Reference Manual

RESERVOIR APPLICATION FLUIDS
Salt Typical pH Values **
11.1 ppg HCOONa 8.0 to 8.5
11.6 ppg CaCl 2 6.5 to 7.5
13.0 ppg HCOOK 8.0 to 8.54
14.2 ppg CaBr 2 6.5 to 7.5
15.1 ppg CaCl 2 / CaBr 2 6.0 to 7.0
16.0 ppg CaCl 2 / CaBr 2 / ZnBr 2 4.5 to 5.0
17.0 ppg CaCl 2 / CaBr 2 / ZnBr 2 3.5 to 4.0
18.0 ppg CaCl 2 / CaBr 2 / ZnBr 2 2.5 to 3.0
19.0 ppg CaCl 2 / CaBr 2 / ZnBr 2 1.5 to 2.0
** pH measured directly on undiluted brine
Table 6 - 9
Typical pH Values of Various Salt Mixtures
Density,
lb/gal (70°F)
Sp. Gr. NaCl, (100%) CaCl 2 , (94-97%)
lbm/bbl lbm/bbl
10.1 1.21 88 29 0.887
10.2 1.22 70 52 0.875
10.3 1.24 54 72 0.875
10.4 1.25 41 89 0.876
10.5 1.26 32 104 0.871
10.6 1.27 25 116 0.868
10.7 1.28 20 126 0.866
10.8 1.30 16 135 0.864
10.9 1.31 13 144 0.862
11.0 1.32 10 151 0.859
11.1 1.33 8 159 0.854
Table 6 - 10
Fresh Water,
bbl
Formulation of Sodium Chloride/Calcium Chloride Solution
using Sacked NaCl (100%) and CaCl 2 (94-97%)
BAKER HUGHES DRILLING FLUIDS
REFERENCE MANUAL
REVISION 2006 6-51