Oilfield Glossary
Oilfield Glossary
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calcium hydroxide

1. n. [Drilling Fluids]
A chemical with formula Ca(OH)2, commonly called slaked lime. Lime is used in lime muds and as a treatment to remove carbonate ions. It is used as a stabilizing ingredient in oil- and synthetic-base mud, essential to formation of fatty-acid soap emulsifiers. It is an alkaline material that can be carried in excess to neutralize hydrogen sulfide [H2S] and carbon dioxide [CO2].
Alternate Form: slaked lime