The Scientific World Journal / 2013 / Article / Tab 2

Research Article

Chemical Effect on Wellbore Instability of Nahr Umr Shale

Table 2

The formation fluid properties of Halfaya oilfield.

UnitNahr Umr

Water typeCaCl2
PH6.3
Specific gravity (15.56°C)sg1.121
Resistivity (25°C)ohm·m0.068
Total salinityppm166661
Total hardnessmg/L16562
Na+mg/L60015
Ca2+mg/L8681
Mg2+mg/L993
Fe2+mg/L74
Ba2+mg/L1
K+mg/L716
Sr2+mg/L356
Clmg/L107098
mg/L874
mg/L7263
mg/L0
OHmg/L0

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