Chapter three concerns drilling fluid contamination by soluble salts Sodium chloride (NaCl), anhydrite (CaSO4), and Gypsum (CaSO4-2H2O). The results indicated that mud weight and viscosity of water base mud increases with increase of bentonite, barite while salt increased mud weight but decreased viscosity, and water back effect reduced both mud weight and density. ![]() Chapter two concerns the control of mud weight using bentonite, barite, and water back for fresh and salt water base mud. pH was slightly lowered with increase of PAC materials. Also the increase in PAC observed to lower the mud weight of the water base mud. The results indicated that PAC materials has the effect of increasing mud viscosity. The report consists of five chapters with four experiments the first chapter is about mud properties test for water base mud using PAC additive. The experiments were conducted at room temperature conditions (28-300C) using Mud balance, Marsh Funnel and pHydrion. ![]() This report concerns the analysis of the factors (bentonite, barite, salt contamination and sand content) that affects basic properties of drilling fluid specifically mud weight (density), apparent viscosity and hydrogen ion concentration).
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