基于地震数据处理的三维地震观测系统设计——泌阳凹陷南部陡坡带三维地震观测系统设计实例

为查明泌阳凹陷南部陡坡带内边界大断裂的位置及断裂带的内幕结构，本文针对该区的地震地质条件，从静校正、速度分析、三维DMO和偏移等四项关键处理环节对原始地震数据的要求出发，设计了三维地震观测系统。在权衡各项处理要求和工作效率情况下，确定了每一排列片线数、满覆盖测线长度、面元尺度、纵横向覆盖次数及排列类型。应用结果表明，采用上述观测方法所获得的地震资料质量较原资料有明显的改善，断裂位置成像清晰，目的层及其以上各反射层特征清晰可靠，分辨率和信噪比均有提高，基本达到了预期的效果。

3-D seismic geometry design based on seismic data processing-Case of 3-D seismic geometry design in south steep slope of Miyang Depression.

University of Geologic Science,Beijing City,100083,China Abstract:In order to clarify the position of large boundary fault and inner structure of faulted zone within south steep slope of Miyang depression and starting from the demand of four key processing links (static correction,velocity analysis,3 D DMO and migration ) on raw seismic data,the paper designed 3 D seismic geometry.After the balance between various processing demands and work efficiency,the numbers of line in each patch,the length of line for full fold,bin size,folds both in in line and cross line direction and the pattern of spread are defined.The results of application showed that the quality of seismic data acquired from using abovementioned methods are greatly improved in comparison with the legacy data: distinguished position of fault imaging,reliable feature of events on the targets and above and improvement of resolution and S/N ratio,basically reached the predicted effects.