hydroxyethyl starch

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A nonionic starch derivative, analogous to hydroxyethylcellulose in its method of manufacture and most applications for drilling, workover and completion fluids. Rather than using a cellulosic starting material, such as hydroxyethylcellulose (HEC), starch is used instead, and reacted with ethylene oxide in an alkaline environment.

Alternate Form: HE starch

See: carboxymethyl starchcompletion fluidworkover fluid