In the petroleum industry, welan gum can be used to prepare drilling mud to maintain the viscosity of water-based drilling fluid and control its rheological properties. Welan gum is also a new type of oil-displacing agent. It is used for tertiary oil recovery in oil wells. It injects an aqueous solution of suitable concentration into the well to press into the oil layer to drive oil, which can greatly improve the oil recovery rate. In addition, welan gum can also be used as a flow improver for well completion, workover, formation fracturing, and heavy oil transportation. Add 0.25%-0.33% of the mud system.
0.05%---0.1%
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