基于人造岩心研究烟道气对高渗透油藏的驱油效果

Study on Flooding Effect of Flue Gas on High Permeability Reservoirs Based on Artificial Cores

高渗透油藏具有典型的三高特征,即"高渗透率、高产能、高丰度"。我国的高渗透油气资源所占比例较低,但众多学者并没有放弃对高渗透油藏提高采收率的研究,其后期开采阶段的采收率有待进一步提高。针对大部分油藏,基于前人使用各种类型的蒸汽,复合驱油本文基于人造高渗透岩心开展烟道气驱油实验,观察注入压力和注入PV数对最终油气采收率的影响。最终优选出最佳注入压力为10.1 MPa,最佳注入PV数为3.0 PV。

High permeability reservoirs have three typical characteristics including high permeability, high productivity and high abundance. China＇s high-permeability oil and gas resources account for a lower proportion, but many scholars do not give up the research on high permeability reservoirs to improve oil recovery, the recovery rate in the late stage of reservoir development should be further improved. In this paper, the experiment of flue gas flooding was carried out based on artificial high permeability core, and the influence of injection pressure and injected PV number on the final oil and gas recovery was investigated. Finally, the optimum injection pressure and optimum injected PV number were determined as follows：10.1 MPa and 3.0 PV