JY油田C335区剩余油分布规律研究

Remaining Oil Distribution In C335 Area Of JY Oilfield

以C335区长8油藏为研究对象进行精细油藏数值模拟研究,定量表征了研究区各小层的剩余储量,整体采出程度较低,剩余储量主要集中在长82^1-2小层。在此基础上结合导流能力、剩余储量丰度,采用优势潜力场参数描述了剩余油分布规律,指明了剩余油潜力区平面上主力小层长82^1-2富集在不同开发单元的中部或东北部;剖面上主要富集在目前油层尚未动用或储层物性较差、非均质性强注入水难以驱替的区域。

Based on fine reservoir numerical simulation of Chang 8 reservoir in C335 area,this article quantitatively characterizes the remaining reserves of each layer in the study area.The whole recovery percent of reserves is 4.12%and the remaining reserves mainly exist in Chang 82^1-2 layer.On this basis,combing with diversion capacity and remaining reserves abundance,distribution of remaining oil is described by using parameters of superior potential.It is pointed out that the remaining oil of Chang 82^1-2 on the plane is mainly distributed in the middle and northeast of different development units.The remaining oil in profile is mainly distributed in unused reservoir and the area of relatively poor reservoir properties or difficult displacement area for water injection.