高密度双谱分析法在各向异性介质速度分析中的初步应用

Application of high density bispectral analyzing method to velocity analysis in anisotropy media

徐翠娥 郝晓红 王影

Xu Cui'e Hao Xiaohong Wang Ying

中国石油化工股份有限公司上海海洋油气分公司研究院, 上海 200120

Institute of SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120

地下地质体都存在不同程度的各向异性,对大偏移距和各向异性介质,反射动校时差曲线是非双曲线型的,复杂介质中的速度分析必须考虑各向异性的问题。因此介绍了法国CGG公司的高密度双谱速度分析法,解决了垂向非均匀介质中各向异性问题,在叠前时间偏移的实际应用中取得了良好的效果。

The moveout curve is non-hyperbolic because of the anisotropy in different scales,especially large offsets or steep dips.So the velocity analysis is complex and must take anisotropy into account.In this pa-per the application of high-density velocity analysis of CGG to resolve velocity analysis in anisotropy media is introduced.It's proven effective for PSTM in real seismic data.