三元复合驱乳化作用对提高采收率影响研究

The Effect of Crude Oil Emulsion on Enhanced Oil Recovery in Alkaline Surfactant Polymer Flooding

通过系统的室内实验 ,研究了不同机械搅拌力、不同含水率条件下 ,表面活性剂、碱、聚合物组成的一元、三元溶液与原油的乳化能力、形成乳化液的类型、稳定性和相关性质 ,揭示了影响三元复合驱乳化的主要因素是油水比、化学剂类型及浓度、外力 ,且上述各种因素是综合起作用的。同时揭示了大庆油田三元复合驱矿场试验中井口采出液乳化产生的原因。乳化携带及乳化调剖等乳化作用是三元复合驱提高洗油效率、扩大波及体积的机理之一。通过室内物理模拟实验 ,得出三元复合驱原油乳化调整了层间、层内矛盾及三元复合驱原油乳化 。

The type and stability and the emulsification ability of the emulsion formed by unitary, duality or ternary solutions containing alkalines, surfactants or/and polymer with crude oil are studied under the conditions of the ratios of water and oil and various stirring forces. It is disclosed that the main factors that affect the emulsification in the ASP flooding are water/oil ratio, type and concentrations of chemicals and applied force. The reasons of emulsification of produced fluid in ASP field test of D...