应用地震反演技术预测储层

Application Seismic Inversion Technology Forecasting Reservoir

为了解决开发过程中储层精细刻画难题,提出将曲线重构地震反演技术引入带储层预测工作中,根据曲线不同频带范围对砂岩敏感性特征,开展基于高频恢复、低频补偿原来的曲线重构技术开展地震反演预测.通过对南八区西部的地震反演实例表明:对于大于2m砂岩分辨能力较高的,隔层太小时,两套砂岩只能当一套砂岩组合反演出来;对于小于2米的砂岩,只有当隔层大于4m条件下才能清晰识别.地震反演能很好的推测地下岩层结构和物性参数的空间分布,有效的提高了薄储层预测精度.

In order to solve the problem of reservoir fine description in the development process, curve reconstruction seismic inversion technology is put forward in the reservoir pre- diction job. According to the sandstone sensitive characteristics caused by different frequency range in the curve, develop the curve restruction technique on the basis of high-frequency recovery and low-frequency compensation and develop seismic inversion.Through the seismic inversion examples of the west districts of Nan8 show that： for more than 2m sandstone with high resolution and the small interlayer is too small, two sets of sandstone combine one sandstone to invert out. For less than 2m sandstone, only when the compartment is greater than 4m, it can be clearly identified. Seismic inversion can be very good at speculating the subsurface strata structure and the spatial effectively improve the prediction precision distribution of the physical parameters. It can of thin reservoir.