孤东油田七区西曲流河沉积微相定量识别技术

A Method to Quantitatively Identify Sedimentary Microfacies of Meandering River:A Case of Qiquxi Unit in Gudong Oilfield

沉积相是石油地质综合研究最基础最重要的工作之一。在油田开发阶段 ,沉积微相的精细研究可以为油田开发方案的编制和调整、精细油藏描述和数值模拟等提供沉积背景等方面的基础地质资料。尤其对以曲流河沉积为主的孤东油田七区西馆上段来说 ,由于岩性横向变化大、砂体展布规律复杂 ,在油田开发的中后期 ,对沉积微相进行定量识别研究 ,就显得更为重要。

Sedimentary facies research is one of the fundamental works in the integrated study on petroleum geology.The detailed analysis of sedimentary microfacies can provide basic geological data of depositional settings to development plan’s design and adjustment,detailed reservoir description,reservoir simulation,and some other aspects of oilfield development .Especially for Upper Ng in Qiquxi unit of Gudong Oilfield,which is dominated by meandering river deposits and is in the middle and late development stage,it is of great significance to quantitatively identify and reserch the microfacies due to its strong lateral variation of lithology and complex sands distribution.