Research and application of special lithology identification method in Yingqiong Basin
With the continuous deepening of exploration in the western South China Sea,special lithology of low-speed mudstone type has been encountered in the target area.Most of these special lithology features strong bright spots in seismic characteristics,which are similar to favorable target features.Therefore,it is crucial to identify false bright spots caused by special lithology during the exploration process.Conventional amplitude analysis methods have little effect on its identification.This article takes the study of low-speed mudstone as an example,systematically sorts out the characteristics of reservoirs and special lithology corresponding to the physical laws of drilled rocks,summarizes the types and formation mechanisms of low-speed mudstone,and effectively distinguishes low-speed mudstone.