Abstract
As a natural and environmentally friendly product with wide sources, low cost, easy degradation and good environmental adaptability, starch has a wide range of applications in the petroleum industry, but improving its temperature resistance is an important research direction for the future. In this paper, by modifying cassava starch with plant phenols, different types and concentrations of plant phenols were preferably selected with plastic viscosity PV (mPa-s) and filtration loss FL (mL) as the main evaluation indexes, and the results showed that the plant phenol modified cassava starch has excellent temperature resistance and filtration loss reduction performance. In addition, the results of clay ball experiment and bentonite particle size distribution measurement experiment indicated that the hydration dispersion and hydration swelling inhibition performance of plant phenol-cassava starch clay were good. Plant phenol-cassava starch is expected to be widely used as a safe and environmentally friendly drilling fluid treatment agent with excellent performance.
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