BAKER HUGHES - Drilling Fluids Reference Manual

Oil / Synthetic Fluids
Metric Conversions
NaCl (g/L) = NaCl (lb m /bbl) ×2.85714
H 2 0 (mL/L) = H 2 0 (gal/bbl) ×23.8086
NaCl (ppm) = % wt ×10,000
Cl – (mg/L) = NaCl (mg/L) ×0.6066
NaCl (mg/L) = Cl – (mg/L) ×1.65
mg/L = ppm ×specific gravity
Formulas
• Salt (lb m /bbl water) = Volume increase factor × NaCl (lb m /bbl)
• Specific Gravity
1.0036 [0.99707 + 6.504 (10 -3 ) (% wt NaCl) + 4.395 (10 -5 ) (% wt NaCl) 2 ]
• Volume Increase Factor
1.00045 + 2.72232 (10 -3 ) (% wt NaCl) + 8.15591 (10 -5 ) (% wt NaCl) 2
• Aw
0.99755 – 4.3547 (l0 -3 ) (% wt NaCl) – 1.8205 (10 -4 ) (% wt NaCl) 2
Baker Hughes Drilling Fluids
Reference Manual
5-66 Revised 2006