FIELD: construction; oil and gas industry.
SUBSTANCE: invention relates to construction of oil and gas wells, namely to methods for producing reagents for treating drilling fluids. Method for obtaining a starch reagent for drilling is to modify a native starch. In a powdered modified starch, dry oxyethylidenediphosphonic acid (OEDP) and calcined soda are separately introduced and mixed with the following ratio of the mass parts of the ingredients: modified starch – 3,000, OEDF – 1–5, calcined soda – 15–20.
EFFECT: technical result of the invention consists in increasing the dissolution rate of a reagent and the rate of flow of a drilling fluid containing the reagent through the grid.
1 cl, 1 tbl
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