A区长7油藏剩余储量分类评价及有利区优选

Classification evaluation of residual reserves and optimization of favorable areas of Chang 7 reservoir in A block

A区长7油藏储层物性差、非均质性强、隔夹层发育。目前处于压力保持水平低、采油速度低、采出程度低、单井产量低的“四低”状态,而且剩余油分布规律不明确、动用难度大。通过建模数模一体化技术,研究剩余油分布规律,进行剩余储量分类评价,优选建产有利区,为油藏下一步开发调整和提高原油采收率提供理论指导和帮助。

Chang 7 reservoir in area A has poor physical properties,strong heterogeneity and intercalation.At present,it is in the"four-low"state of low pressure keeping level,low oil recovery rate,low recovery degree and low single well production.Moreover,the distribution law of remaining oil is unclear and it is difficult to use.Through the integration of geological modeling and numerical modeling technology,the remaining oil distribution law is studied,the remaining reserves are classified and evaluated,and the favorable areas for production and construction are selected,so as to provide theoretical guidance and help for the next development adjustment of the reservoir and the improvement of oil recovery.