道集优化在叠前同时反演中的应用

The Application of Gathering Optimized Technology in Prestack Simultaneous Inversion

近年来勘探开发实践表明,地震资料作为叠前同时反演的数据基础,其品质直接影响井点道集AVO特征和反演体信噪比、分辨率,所以提升叠前道集品质进而提高储层、流体预测精度是叠前同时反演的关键环节。通过对原始道集质控查找问题,开展井控下Radon去噪优化改善井点周围道集AVO反射特征。实例应用表明,储层预测结果与实钻井吻合较好,砂体预测的可靠度得到明显提高,该技术可以在储层预测研究中进行推广。

In recent years,exploration and developing practice shows that the quality of seismic data which is the basic of pre-stack simultaneous inversion,directly affects the AVO characteristics of well point gather,the SNR and resolution of inversion volume.Therefore,improving the quality of pre-stack track collection in order to improve the accuracy of reservoir and fluid prediction should be the key process to pre-stack simultaneous inversion.By analysis of the quality of original gather,radon denoising optimization under well control has been carried out to improve the AVO reflection characteristics of the gather around the well point.The practical application shows that the reservoir prediction results are in good agreement with the actual drilling,and the reliability of sand body prediction has been effectively improved.This technology can be extended in reservoir prediction research.