| Summary: | The use of mixed metal hydroxide tri-cationic (Li+, Mg+2, Al+3) in water based drilling fluids brought to the birth of a new air and perspective to improve the using of Bentonitic suspension as viscosifier in drilling fluids.The aim of this work is to study the possibility of using mixed metal hydroxide and see his effect at different percent (5%, 10%, 15% and 20% by Wt of Bentonite) on the rheological behavior and colloidal properties of Algerian Na-Bentonite suspension (30 kg/m3).Rheological tests and Zeta Potential measurements have been performed for each prepared suspension. The results show that the adding of MMH on Algerian Na-Bentonite increases the yield stress to 1.39 Pas at 20% MMH, however a stable suspension was observed −41 mV of Zeta Potential measurement at 10% MMH with yield stress of 1.17 Pas.
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