中低渗透油田的显著特点就是储层渗透率低,天然能量不充足,靠天然能量开采弹性能量衰竭快,很快转变为效益低、周期长的溶解气驱开发阶段,油井产量递减快,开发水平低。对这类油藏注气特别是注CO2有独到优势。本文主要对盖层密封性、断层的遮挡性、储层的适应性、油藏流体溶解CO2的能力等方面对赵7断块注CO2油藏适应性进行研究。 Low-permeability oilfield is characterized by low reservoir permeability, natural energy is not sufficient, by the natural energy recovery elastic energy failure fast, and soon turned into a low-efficiency, long period of dissolved gas drive development stage, the oil production decline, development low level. Gas injection of such reservoirs, especially CO2 injection has unique advantages. In this paper, the adaptability of CO2 injection in the fault block Zhao7 was studied in terms of sealant sealing, fault blockage, reservoir suitability and reservoir fluid ability to dissolve CO2.