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俄罗斯运用的物理化学法提高原油采收率 (EOR)技术是采用可以保持和自我调控的胶体化合物作为驱油体系 ,从而达到驱油目的 ,EOR技术的主要作用是提高水驱和蒸汽驱波及程度。利用地层产生的或者注入的热载体产生的热能就地生成碱性缓冲体系、二氧化碳和能够提高波及和驱油效率的凝胶 ,此种物理化学法发展前景广阔。尿素铝盐表面活性剂水体系经过水解、水解缩聚、凝胶过程生成无机凝胶。为了生成热可逆的聚合物凝胶 ,我们可以在较低临界溶点的纤维素醚水体系中实现液相凝胶相的转变。这就是俄国科学研究院物理化学研究所在俄国几大油田试验应用物理化学EOR技术得出的结论。现已证明这项技术是有效的 ,在生态上是安全的 ,资金回收期为 5～12个月。
Russia’s physicochemical approach to enhanced oil recovery (EOR) is the use of colloidal compounds that can be maintained and self-regulated as a flooding system for oil displacement purposes. The main role of EOR technology is to increase the extent of water flooding and steam flooding . Alkaline buffer systems, carbon dioxide, and gels that increase sweep and flooding efficiency are generated in situ by the thermal energy generated by the formation or injected into the heat carrier. This physico-chemical approach has broad prospects for development. Urea aluminum salt surfactant water system after hydrolysis, hydrolysis polycondensation, gel process to generate inorganic gel. In order to generate thermoreversible polymer gels, we can achieve the transformation of the liquid-phase gel phase in a cellulose ether water system with a lower critical melting point. This is the conclusion drawn by the Institute of Physical Chemistry of the Russian Academy of Sciences on the application of physicochemical EOR testing in several major oil fields in Russia. It has been proven that this technology is effective and ecologically safe with a payback period of 5 to 12 months.