Thick oil emulsion viscosity-reducing agent and preparation method thereof

Heavy emulsion viscosity reducer, heavy oil used in oil field formation treatment. Characterized in that: a weight ratio of raw material components: A, disodium monolauryl sulfosuccinate: 1.5% ~ 5%; B, emulsifier OP-15: 3% ~ 15%; C, sodium hydroxide: 0.5 % ~ 1%; D, sodium carbonate: 0.8% ~ 2.5%; E, sodium hydrogencarbonate: 0.5 ~ 1.5%; F, the remainder being water. Effect: when used in heavy oil production or pump inspection, on-site water with 0.3% -2% of the heavy oil emulsified viscosity reducer, is injected into the well, this heavy oil emulsified agent having strong reducing activity, low surface tension, paraffin, asphalt and gum has a good wash, viscosity reduction, to reduce the viscosity of heavy oil, heavy oil reservoirs to improve recovery of the object.