FIELD: oil and gas industry.
SUBSTANCE: invention relates to method of preparing an aqueous pour point depressant dispersion composition for improving fluidity of crude oil at low temperatures. Method comprises steps of combining in an extruder ethylene vinyl acetate copolymer, a dispersing agent and water to form an aqueous dispersion of ethylene vinyl acetate copolymer which optionally can be mixed with an aqueous freezing point depressant.
EFFECT: obtained pour point depressant reduces pour point of crude oil, exists in liquid state in a wide temperature range and demonstrates long-term resistance to creaming.
10 cl, 1 dwg, 3 tbl, 10 ex
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