PAG | Energy Glossary

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1. n. [Drilling Fluids]

A polymer or copolymer of an alkalene oxide, such as polyethylene glycol (PEG), a polymer of ethylene oxide with general formula HO(CH2CH2O)nH, or polypropylene glycol (PPG), which is a polymer of propylene oxide. PAGs are effective shale inhibitors and have effectively replaced the earlier polyglycerols.

Synonyms: TAMEthermally activated mud emulsion

Alternate Form: polyalkalene glycol