By screening and mingling of various kinds of solvents and surfactants, a sort of oil remover on sandstone in oil in water emulsion form is developed.

• 对各种溶剂及表面活性剂进行了筛选和复配,用正交实验方法配制了对砂岩表面原油具有高效清洗能力的水包油型乳状液。