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citric acid

1. n. [Drilling Fluids]

An organic acid, properly called 2-Hydroxy-1,2,3-propanetricarboxylic acid, with formula C6H8O7. Citric acid is used to reduce the pH of drilling fluids and hence for treatment of cement contamination. It also acts as a polymer stabilizer.

See: chelating agentdrilling fluidsulfide

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