极复杂断块油藏剩余油分布特征

Characteristics of remaining oil distribution in extremely complex fault block reservoirs

极复杂断块剩余油分布特征极其复杂,本文以中国东部某极复杂断块油藏为例,应用CMG油藏数值模拟软件,对该油藏剩余油分布特征从平面,层间两方面进行研究,并针对该类油藏剩余油分布特征提出相应的技术对策。研究表明平面上,剩余油主要存在于砂体边角部位,其次是井网不完善,井网未控制到的区域;纵向上,剩余油分布在层间渗透率较低的层位;整体来看,剩余油主要分布在渗透率非均质性强,物性相对较差的区域。

The remaining oil distribution in the extremely complex fault block is extremely complex. In this paper, a finite element fault reservoir in eastern China is taken as an example. The CMG reservoir numerical simulation software is used to study the remaining oil distribution characteristics of the reservoir from plane and interlayer. And put forward the corresponding technical countermeasures for the remaining oil distribution characteristics of the reservoir. The results show that the remaining oil is mainly present in the corner of the sand body, followed by the well pattern is imperfect and the well pattern is not controlled. In the vertical direction, the remaining oil is distributed in the lower layer of the interlayer permeability. On the whole,the remaining oil is mainly distributed in areas where the permeability is heterogeneous and the physical properties are relatively poor.