Comparison of color blending methods of seismic data for quaitative interpretation

Abstract

Introduction. The technique of color mixing or chromatic interpretation is a widespread analysis tool, especially for geological complexes of complex structure. The implementation implies the use of either frequency slices obtained within the framework of spectral decomposition, or amplitude slices spaced apart in time.
Aim. The purpose of this research is to study the process of occurrence of anomalies within the framework of color mixing of amplitude slices. An additional task is to develop metrics for comparing chromatic interpretation tools with each other.
Materials and methods. The python programming language and open libraries were used to implement the research. At the initial stage of the study, the selected algorithms were studied on simple model data, which allows us to form key hypotheses, which were later tested on a real seismic data.
Results. The key factor leading to the appearance of anomalies in the color mixing of amplitude slices is the shape of reflection. This factor works for both frequency slices and amplitude ones. However, there are differences in the detail of the results. Thus, mixing the amplitude slices allows geophysicist to get a more information about the internal structure of the studied complex due to a local character of the anomaly, as well as the preservation of information about the reflection sign.
Conclusion. The developed algorithm for evaluating the informativeness of chromatic maps allows us to conclude that the results of color mixing of amplitudes are more informative. This thesis was confirmed both on model data and on a real example.