Oilfield Glossary
Oilfield Glossary
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aluminum stearate

1. n. [Drilling Fluids]
The salt of aluminum hydroxide and stearic acid (saturated C-18 fatty acid) with the formula Al(O2C18H35)3. It is a grease-like solid. When mixed with oil (for example, diesel oil) and the mixture sprayed onto the surface of a foamy water mud, it helps the gas bubbles break out of the mud.