混合相位反褶积在地震资料处理中的应用

Application of Mixed-phase Deconvolution Method in Seismic Data Processing

随着勘探开发程度的继续发展和深入,大部分的油田都开始研究隐蔽复杂的油气藏,地震分辨率较低会影响后续的处理、解释等工作,很难识别薄储层、小断块、微幅构造等隐蔽性油气藏,从而影响了后续勘探和开发的效果。目前,常常会使用地震子波反褶积技术来提高地震资料的分辨率。本文首先详细论述了混合相位反褶积的基本原理和流程,然后使用该技术对实际地震资料进行了处理,并与最小相位预测反褶积的处理效果进行了对比,结果显示,混合相位反褶积的效果较好,既提高了分辨率,也保持了较好的信噪比。

With the continuous development and development of exploration and development, most of the oilfields begin to study concealed complex reservoirs. Low seismic resolution will affect subsequent processing and interpretation. It is difficult to identify thin reservoirs, small blocks, micro structure and other subtle reservoirs, which will affect the effect of subsequent exploration and development. At present, seismic wavelet deconvolution is often used to improve the resolution of seismic data. In this paper, the basic principle and process of mixed phase deconvolution are discussed in detail, and then the actual seismic data are processed with this technique and compared with the processing effect of the minimum phase prediction deconvolution. The results show that the effect of mixed phase deconvolution is better, which not only improves the resolution, but also keeps better signal-to-noise ratio.