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研究切片的应用条件和分辨率对更好的利用切片具有重要意义,针对这2方面采用正演模拟进行了探讨。研究表明,地层切片仅适用于小于地震分辨率的薄层储层;地层切片的范围应大于或局部大于沉积体系的规模,且参考层间的地层厚度不能剧烈变化。切片的分辨率可以用检测率来表示,检测率满足横向分辨率往往小于垂向分辨率,薄层情况下,切片的分辨率比时窗属性的分辨率更高,地震资料的品质、地质背景以及所采用的切片方法是切片分辨率的重要影响因素。分频技术并不能改善地震资料品质和提高分辨率,但可以突出储层的有效信息;与薄互层情况下的地震切片相比,单一薄层情况下(泥包砂)的地震切片分辨率更高;保证切片的相对地质等时是地质体能够识别的基础。
The application condition and resolution of the research slice are of great significance for the better utilization of the slice, and the forward simulation is discussed according to these two aspects. The study shows that the stratal slice is only applicable to thin reservoirs less than the resolution of the earthquakes. The range of stratal slices should be larger or larger than that of the sedimentary system, and the thickness of the strata between the reference strata can not change drastically. The resolution of the slice can be expressed by the detection rate, the detection rate meets the horizontal resolution is often less than the vertical resolution, the slice resolution is higher than the resolution of the time window property, the seismic data quality, geological background As well as the slice method used is an important factor in slice resolution. The crossover technique does not improve the seismic data quality and resolution, but it can highlight the effective reservoir information. Compared with the seismic slice in the case of thin interbed, the seismic slice resolution in a single thin layer (mudflat) Higher; to ensure the relative geology of the slice is the basis of geological body identification.