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The document describes a European patent application for a modified starch polymer designed for use in well drilling fluids, which offers improved high-temperature stability and fluid loss performance. The modified starch is derived from unmodified starch with a high amylopectin content, crosslinked with epichlorohydrin, and carboxymethylated to enhance its properties. This innovation addresses the limitations of conventional starches that degrade at elevated temperatures, providing a more effective solutio

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newsyriata

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EN