Product Function Per Lab. bbl (350 ml) Sample  1 Sample  2 Sample  3 Sample  4 Sample  5 Sample  6 Sample  7 Water Based liquid 325.5 ml 325.5 ml 325.5 ml 325.5 ml 325.5 ml 325.5 ml 325.5 ml Bentonite Viscosifier & filtration control 24.5 g 24.5 g 24.5 g 24.5 g 24.5 g 24.5 g 24.5 g Barite Adjust mud density 52.0 g 52.0 g 52.0 g 52.0 g 52.0  g 52.0  g 52.0 g Caustic Soda Ph control 0.20 g 0.20 g 0.20 g 0.20 g 0.20 g 0.20 g 0.20 g Soda Ash Hardness control 0.25 g 0.25 g 0.25 g 0.25 g 0.25 g 0.25 g 0.25 g Poly - SAL Filtration control 0.40 g 0.40 g 0.40 g 0.40 g 0.40 g 0.40 g 0.40 g XC-Polymer Rheogy control 0.0 g 0.50 g 1.0 g 1.50 g 2.0 g 2.50 g 3.0 g

Table 1: Formulation of Drilling Fluids.