BAKER HUGHES - Drilling Fluids Reference Manual

RESERVOIR APPLICATION FLUIDS
Corrosion Data (mils per year)
30 Day Test N-80 Steel
Brine Type
Density lbs/gal
Temperature (°F)
70° 150° 250° 350°
Cor. Rte,
mpy
Cor. Rte,
mpy
Cor. Rte,
mpy
Cor. Rte,
mpy
NaCl 10.0 0.5 1.5 0.2 0.1
NaBr / NaCl 11.2 0.4 0.7 0.1 0.1
CaCl 2 11.6 0.1 0.2 0.7 1.9
CaCl 2 / CaBr 2 13.6 0.3 0.9 1.6 3.0
CaCl 2 / CaBr 2 15.1 0.1 0.5 2.4 6.6
Note: No corrosion inhibitor
Table 6 – 8 Corrosion Rate vs Temperature in 30-Day Test N-80 Steel
Compatibility of Various Additives with Different Salt Types
Monovalent Salts
Oxygen Scavengers
Scale Inhibitors
Magnesium Oxide
Sodium Hydroxide
Ca(OH) 2 (Lime)
Defoamers
Many different Viscosifiers
Other Surfactants
Divalent Salts
Oxygen Scavengers
Scale Inhibitors
Magnesium Oxide
Viscosifiers (HEC, W-306, and starches)
Defoamers
Salt Tables
The following salt tables came from three sources.
The potassium chloride table is from the CRC Handbook of Chemistry and Physics, 62nd edition.
The sodium chloride table is from Staples and Nuttall, Journal of Physical Chemistry Reference
Data, 1977, Volume 6.
The calcium chloride table is from Clarke and Grew, Journal of Physical Chemistry Reference
Data, 1985, Volume 14.
BAKER HUGHES DRILLING FLUIDS
REFERENCE MANUAL
REVISION 2006 6-49