基于沉积微相控制的剩余油分布定量研究——以下二门油田下层系为例

Quantitative Study on Remaining Oil Controlled by Sedimentary Facies:A Case Study of Lower Series in XiaErMen Oilfield

随着下二门油田开发的逐渐深入,下层系的剩余油研究和沉积微相研究也取得了极大的进展。在充分把握该层系沉积微相特征及剩余油分布的基础之上,将剩余油分布三维空间模型与沉积微相的空间展布模型结合起来,对不同沉积相带的剩余油从剩余地质储量、剩余储量丰度、剩余油饱和度进行定量统计分析,进一步探讨沉积微相跟剩余油分布的定量关系。该研究对预测剩余油分布及制定合理的挖潜对策,提高油藏开发效率及最终提高石油采收率具有重要的指导意义,并且其研究思路和方法可适用于其它同类油藏。

With deeper development of XiaErMen oilfield, the study on remaining oil and sedimentary facies in lower series of this field has made rapid progress. In this paper, by combining the remaining oil model with sedimentary facies model, based on a good knowledge of distribution characteristics of both remaining oil and sedimentary facies, quantitative statistic analysis has been con- ducted on remaining oil, remaining reserves abundance, remaining oil saturation of different sedimentary facies, and the quantitative relationship between remaining oil and sedimentary facies has been analyzed. This study has important leading meaning to predict re- maining oil distribution, to make optimal adjust measures, to promote development efficiency and enhance oil recovery. In addition, These methods introduced in this paper can also be used for other similar reservoirs.