Tight oil reservoir phase permeability modifying and flooding agent and preparation method thereof

The invention relates to a tight oil reservoir phase permeability modifying and flooding agent and a preparation method thereof, and the formula of the phase permeability modifying and flooding agent comprises the following components by weight: 5-15% of a sulfobetaine ampholytic surfactant, 0.5%-5% of a superstrong phase permeability regulator, 5%-10% of a nonionic surfactant, 1%-5% of an auxiliary agent, 0-0.5% of an intermediate and the balance of water. According to the invention, the super-strong phase permeability regulator is added, so that the oil washing efficiency and the water drive recovery efficiency can be effectively improved. The invention also relates to the preparation method of the phase permeability modifying and flooding agent. 本发明涉及一种致密油藏相渗调驱剂及其制备方法，以物料重量百分数比计数，所述的相渗调驱剂配方包括以下成分：磺基甜菜碱两性表面活性剂5％～15％；超强相渗调节剂0.5％～5％，非离子表面活性剂5％～10％，助剂1％～5％；中间体0～0.5％，余量为水。本发明通过添加超强相渗调节剂，可以有效提高洗油效率以及水驱采收率。本发明还涉及所述相渗调驱剂的制备方法。