![]() And the following research results were obtained. Finally, based on drilling and testing data, the hydrocarbon enrichment zone of Xujiahe Fm was predicted. In addition, the structural system was classified according to the dynamic direction of regional structure and the structural interrelationship, and the formation stages of the structure were confirmed. Then, we displayed and described the structural characteristics by means of the 3D visualization technology of low-angle vertical backlight irradiation. In order to provide guidance for the prediction of hydrocarbon enrichment zone of Xujiahe Fm, we first plotted the regional structure map based on the 2D and 3D seismic merging data of the basin. The gas reservoir of Upper Triassic Xujiahe Fm in the Sichuan Basin is characterized by “accumulation in the early stage, entrapment in the middle stage and activation in the late stage”.
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