低渗透油藏CO_2驱油机理及应用现状研究

当今社会快速发展,能源问题日益严峻。由于低渗透油藏低孔、低渗、自然能量不足等特点,采用常规方法已经不能有效采出原油,CO_2驱是三次采油方法中提高低渗透油藏采收率的一种方法。综述了CO_2驱油的机理、CO_2驱油效果的影响因素以及近些年来国内外CO_2驱油的应用现状,指出CO_2驱在我国低渗透油藏的可行性和巨大潜力。

Study on the Mechanism and Application of CO2 Flooding in Low Permeability Reservoirs

With the rapid development of today's society, the energy problem is becoming more and more serious. Because the low permeability reservoir has low porosity, low permeability and natural energy shortage, the conventional methods cannot effectively produce oil. Carbon dioxide flooding is a method to improve the recovery of low permeability reservoirs. In this paper, the mechanism of carbon dioxide displacement, influence factors of carbon dioxide flooding, research progress of carbon dioxide flooding, and application status of carbon dioxide flooding at home and abroad in recent years were reviewed, the feasibility and great potential of carbon dioxide flooding in low permeability reservoirs were pointed out.