RU2755074C2 RU2019115480A RU2019115480A RU2755074C2 RU 2755074 C2 RU2755074 C2 RU 2755074C2 RU 2019115480 A RU2019115480 A RU 2019115480A RU 2019115480 A RU2019115480 A RU 2019115480A RU 2755074 C2 RU2755074 C2 RU 2755074C2 Authority RU Russia Prior art keywords emulsion emulsifier industrial well …