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POTASSIUM CHLORIDE (KCl) is a soluble salt that is an extremely efficient shale stabiliser when drilling hydro sensitive clays and shales. Inhibition is provided through ion exchange; the potassium ion enters between the individual clay platelets in the shale so that they are held together, thus eliminating entry of water from the drilling fluid.
SODA ASH is a free flowing powder also known as sodium carbonate (Na2CO3) used in a fluid system to precipitate calcium (hardness) and increase alkalinity (pH).