Seismic sub-volume coherence and image synthesis

摘要

Seismic sub-volume coherence and image synthesis technology takes 3-D seismic sub-volume data of any size as the basic computational unit. This technology characterizes the change of geophysical parameters between sub-volume 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 average effect. Therefore it is more sensitive to the weak variation of the seismic data. It increases the apparent resolution of the volume by displaying synthetically coherence, dip and azimuth attributes and describes more clearly distribution of structural traps, small faults or fractures and characterizes semi-quantitatively the border of complex geological anomalous body. This technology is applied in block A, and the distribution of its structural traps and the width of the reef are effectively predicted. And it can also be used in the lower level exploration areas with few wells to study the sedimentary environment and sedimentary facies.