HS地区薄河道砂体的预测

Prediction of thin channel sand body in HS region

HS地区已经进入了滚动勘探开发阶段,从已投入开发的油藏来看,含油砂体主要发育分流河道沉积微相,在横向上,河道摆动快。通过对HS地区的岩石物理特征分析的基础上,运用地质统计学反演技术对该区开展储层预测研究,精细刻画含油砂体的空间分布特征,实现了对含油砂体的高精度预测,为开发井网部署提供了很好的指导。从研究成果来看,地质统计学反演方法比较好的解决了薄储层预测的问题,提高了薄砂体的识别能力。从最终在油藏块内部部署的开发井来看,吻合率在80%以上,为滚动勘探开发井网的部署决策提供了很好的依据。

HS region has entered the stage of rolling exploration and development.According to the oil reservoirs that have been developed,the oil sands are mainly distributary channel sedimentary microfacies,which change in the horizontal direction.Based on the analysis on the petrophysical characteristics of HS area,geostatistical inversion method was used for the reservoir prediction in this area.Oil-bearing sand’s spatial distribution was accurately predicted,which provides a good guidance for the deployment of development well pattern.According to the research results,the geostatistical inversion method can solve the problem of thin reservoir prediction and improve the thin sand identification.80% of the development Wells deployed in the reservoir block are consistent with the prediction result,which shows that the reservoir method is valid.