An Integrated Study on Coal Measure Distribution in X Sag Based on Seismic and Geologic Data
利用地震地质资料综合研究X凹陷煤系地层分布

The coal measure source rock in Y Formation is one of the important source rocks in X sag, the distribution of which is critical in assessing exploration prospect of X sag. Based on previous work, our study aimed at principal problems to analyze the petrophysical characteristics of the coal bed. The logging series that could be used to separate the coal bed from the wall rock was defined with forward modeling. The geophysical response of coal measure was analyzed by combining with seismic attribute analysis. In addition, the geological characteristics of the coal measure was recognized through the geophysics characteristics by integrating the core, well log, geochemical and palaeontology data to analyze the coal forming environment in the sag and the distribution of coal measure. The northwest of X sag is believed as the favorable areas that developed the coal measure in Y Formation and rich in coals. The analysis technique of seismic attribute represented by multiple-attribute regression is suitable for the prediction of the coal measure distribution.