Oilfield Glossary
Oilfield Glossary
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caustic potash

1. n. [Drilling Fluids]
The common name for potassium hydroxide [KOH]. Caustic potash is used in potassium-based water muds to increase pH and alkalinity and to help maintain the K+ ion concentration. As the name implies, it is highly caustic and gives off heat when dissolved in water. Caustic potash is hazardous to use without proper training and equipment.