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Synthetic Seismic Record Reflection Horizon Standardization Method Analysis
Pages: 48-52
Year: Issue:  7
Journal: Coal Geology of China

Keyword:  artificial synthetic seismic recordgeological horizon standardizationtime-depth conversion relationshipseismic waveletreflection coefficient;
Abstract:  Standardization of seismic horizon is the basis of seismic prospecting structural interpretation, while the synthetic seismic re-cord and well-side seismic trace contrast is a main method in horizon standardization. Besides impacts from seismic data quality per se and logging data quality to the accuracy of horizon standardization, the exactitude of synthetic seismic record execution lies on accuracy of critical factors of polarity of seismic profile, coefficient of reflection, mean velocity, seismic wavelet etc. Through introduction to vari-ous parameters determination key technology, the specific method and standard adopted in seismic transmitting horizon standardization put forward. Such as if using related coefficient to contrast, it should be larger than 0.6; the artificial synthetic seismic record from mean velocity contrast has smaller difference with actual section configuration;logging trace configurations before and after time-depth adjustment should have no differences etc. Besides, in order to improve contrastive accuracy, when carry out target time-depth adjust-ment, should combine with other information, such as electric curves, lithologic section and borehole geological layering etc. to comply with geological regularity.
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