弱碱三元体系中聚合物分子线团尺寸及其影响因素

目前,三元复合驱已逐渐成为各大油田的主要开发技术,三元驱可分为强碱三元驱及弱碱三元驱。强碱三元驱技术的发展已相对成熟,但就研究情况可知,强碱三元体系中的强碱会与地层中矿物质产生化学作用,生成碱垢,对设备损害大,不利于后续开采,因此有必要将研究重点放在弱碱三元复合驱上。为了完善和解决弱碱三元驱油体系与二类油层的渗透率适应性关系,通过使用激光光散射法测量弱碱三元体系中的聚合物的分子流体力学直径,以分析弱碱三元体系与二类油层渗透率适应性关系。

Polymer molecular strand size and its influence factors of weak base ASP system

At present,ASP flooding has gradually become the dominant development technology of oil field,which is divided into strong base ASP flooding and weak base ASP flooding.Strong base ASP flooding technology has been developed,but in terms of the research situation,Strong alkali reacts with minerals in formation to form alkaline scale,which is unfavorable to subsequent mining,Therefore,weak base ASP flooding has gradually become the focus of research.In order to improve the permeability adaptability of weak base ASP flooding system and two types of oil reservoirs,we used laser light scattering to measure the molecular hydrodynamic diameter of polymers in weak basic ASP system,and analyzed the adaptability of weak base ASP system and two types of reservoir.