复杂地质异常体地震子体相干和图像合成识别技术

本文运用地震子体相干和图像合成技术以三维地震资料中任意尺寸的子体为基本计算单元,采用多算子方法,将子体之间地球物理学特征参数的变化表征出来,实现地震属性间的相关性和地层的倾角及方位角多信息高分辨率检测,平均效应小,对地震数据的微弱变化也比较敏感。将相干、倾角和方位角三种属性的图像合成显示提高了数据体的空间视分辨率,更清楚地表征小断层或裂缝分布特征,定量地刻画复杂地质异常体的边界。应用文中所述技术有效地预测了A区块潜山油藏的裂缝发育规律和B区块曲流河河道的宽度。

Seismic sub-volume coherence and image synthesis technology for identifying complex anomalous geological body

Seismic sub-volume coherence and image synthesis technology thinks 3-D seismic sub-volume data of any size as the basic computational unit.This technology characterizes the change of geophysical parameters between sub-volumes by multi-operator method.It achieves high-resolution and multi-information detection of the correlation among seismic attributes,dip and azimuth information and has the characteristic of the small ave-rage effect.Therefore it is more sensitive to weak variations of the seismic data.It increases apparent resolution of the volume by displaying synthetically coherence,dip and azimuth attributes and describes more clearly distribution of small faults or cracks and characterizes quantitatively the border of complex geological anomalous body.The thesis predicts effectively the distribution of the cracks of the buried hill reservoirs in Block A and the width of the meandering rivers in Block B by this technology.