FIELD: oil and gas industry.
SUBSTANCE: present invention is concerned with emulsifiers and may be used for preparation of petroleum emulsols and then crude-oil emulsions that are used in oil industry for increasing production rate. The base for petroleum emulsol is wax-naphthenic fraction. It is obtained by rectification of hydrocracking kerosene oil - the product with congelation temperature - 55-65°C and boiling point temperature 210-230°C. According to the method of above base obtaining hydrocracking kerosene oil undergoes rectification. The process is performed at low pressure or atmosphere pressure. This invention has been developed within subclaims.
EFFECT: decreasing of congelation temperature at increasing of base boiling point temperature, improving of emulsol homogeneity and heat stability, increasing of emulsion capacity to improve reservoir production rate and water-intake capacity of wells.
6 cl, 4 ex, 7 tbl
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