三角洲前缘相储层剩余油分布特征及挖潜对策研究

The Remaining Oil Distribution and Enhance Oil Recovery of Delta Front Facies Reservoir

针对以三角洲前缘相沉积为主的油藏,结合沉积微相特征对剩余油的控制作用,分析了层间、层面、层内剩余油分布特征。采用数值模拟方法研究了三角洲前缘相储层的剩余油分布规律,主要有水下分流主河道及主体席状砂体侧缘剩余油、断层遮挡型、注采不完善型、层间干扰型,并根据剩余油分布规律提出对应的挖潜对策,井网加密、注采系统调整、注水井调剖、酸化等。

For in the delta front facies reservoir of the mainly,combined with the characteristics of sedimentary microfacies of remaining oil control function,analyzed the layers,level,the characteristics of remaining oil distribution within the layer,the numerical simulation method was used to study the delta front facies reservoir of remaining oil distribution law of,basically have underwater tap main stem and main body seats,sand body of remaining oil,fault block lateral margin is not perfect injection-production type,type,interference between layer type.According to the remaining oil distribution,corresponding countermeasures to tap the law,and the well nets encryption,injection-production system adjustment,the water injection well profile,acidification,etc are put forward.