الملخص EN. In this research the natural Bentonite which cannot be much better used in the industrial fields is activated by using a base solution (in this research, Sodium Carbonate Na2 CO3) where calcium ions ca++ present in natural Bentonite are exchanged by Sodium ions Na+ present in the base solution.
The experimental work included measuring the rheological properties at low and HPHT of drilling fluid, suspension stability of bentonite, swelling, and filtration. The results obtained from this study showed that the properties of treated local bentonite developed through thermo-chemical upgrading, outperformed the commercial standard bentonite.
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