Hi all,
I have been studying up on the properties of Calcium Chloride and its application on a range of industries (De-Icing, O&G, Food, Healthcare etc...)
From what I have read , CaCl2 is used as an additive in drilling mud (increases density of fluid, prevents shell & clay hydration, several advantages...).
However, I have also read it provides a cooling effect to the drill bit? From what I understand, CaCl2 undergoes an exothermic reaction with water. So given the mud is aqueous-based, would this not be counter intuitive?
Thank you for your response!
Once the salt is diluted into the mud's water, the exothermic effect is finished and the drilling mud is no more heated. By inhibiting clay and shale hydration, it keeps the drilling mud rather liquid, and this helps in cooling the bit.
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