THE METHOD FOR LITHOLOGIC TRAP IDENTIFICATION IN SOUTHEASTERN GUCHENG AREA OF BIYANG DEPRESSION

The structural traps are small in scale with low amplitude in the southeastern Gucheng area of the Biyang Depression,and the distribution of oil and gas is controlled not only by tectonics, but also by lithologic association. Therefore, it is crucial to make clear the spatial distribution pattern of lithologic traps in the southeastern Gucheng area, so as to provide more precise drilling targets. In our study, drilling, logging, seismic data are adopted to identify and describe the lithlogic traps by using the techniques of thin layer microfacies analysis, seismic attribute analysis, time slice and others. High quality results have been obtained in the region.