The effects of temperature affects the viscosity of the samples were compared at 30˚C and 80 ˚C. The results of the PV, AV and YP of the base mud at 30˚C are 6 cP, 14 cP and 16 lb/100ft2. At 80˚C temperature, values of PV and AV are reduced to 7 cP and 15.5 cP