在致密裂缝性油藏中采用常规驱替方法(例如水驱)采油效果不好。在这种油藏中,必须依靠天然机理从储集岩基质中采油。在中东裂缝性碳酸盐岩中,基质一般是油湿或混合润湿的,并且只有重力泄油是可行的工艺。但是,渗透率通常较低(<0.01μm2),导致重力泄油采油量低,剩余油饱和度和/或毛细管滞留量高。EOR技术(例如注蒸汽和注混相气)具有提高气油重力泄油(GOGD)采油量和采收率的潜力。在浅裂缝性油藏中,能够向断裂体系中注蒸汽。蒸汽一接触较凉的基质将冷凝,在断裂体系中以稳定方式形成蒸汽前缘。加热基质使原油膨胀、降低黏度、产生气驱和气提效应。在较深油藏中,在混相条件下的GOGD成为一种选择。注入与油混相的气将导致原油膨胀,降低黏度,这两种机理提高了原油流度,因此提高了GOGD率。混相进一步增加了在高相对渗透率下的单相流动的效益,并且降低了界面张力,因此减小了再次渗吸效应并且提高了非均质油藏最终采收率。为了评价这些EOR方法的效益,采用模拟技术模拟了这些过程对GOGD的影响。本文介绍了普通双重渗透率方法,当EOR技术应用于裂缝性油藏时,该方法能够预测出现的GOGD以及不同的相互作用过程。 In conventional fractured reservoirs, conventional flooding (eg water flooding) is not effective. In this reservoir, it is essential to rely on natural mechanisms to recover oil from the reservoir rock matrix. In the Middle East fissured carbonate, the matrix is ​​generally oil wet or mixed wet, and only gravity drainage is a viable process. However, the permeability is generally low (<0.01 μm2), resulting in low gravity drain oil production, residual oil saturation and / or high capillary hold up. EOR technologies, such as steam injection and gas injection, have the potential to increase GOGD recovery and recovery. In shallow fractured reservoirs, steam can be injected into the fracture system. The steam will condense upon contact with the cooler substrate and form the steam front in a stable manner in the fracture system. Heating the substrate causes crude oil to expand, reducing viscosity, creating gas flooding and stripping effects. In deeper reservoirs, GOGD under miscible phase becomes an option. The injection of a miscible phase of gas will cause crude oil to swell and lower viscosity, both of which increase the crude oil flow and thus increase the GOGD rate. The mixed phase further increases the effectiveness of single phase flow at high relative permeability and reduces the interfacial tension, thereby reducing the re-imbibition effect and increasing the ultimate recovery of heterogeneous reservoirs. To evaluate the effectiveness of these EOR methods, simulation techniques were used to model the effect of these processes on GOGD. This paper presents a common dual permeability method that can predict the occurrence of GOGD and the different interaction processes when EOR technology is applied to fractured reservoirs.