Geological Characteristics and Formation Mechanism of Karst Reservoir Seismic Reflection in Tazhong Area

Combined with the seismic reflection strength and shapes,this article divides seismic reflection into four types,including the string beads reflection,the flaky reflection,the disorderly reflection and the weak reflection.And the string beads reflection and the flaky reflection are subdivided.Based on the summary of the corresponding relations between seismic profile and karst reservoir in Yingshan Formation of the Lower Ordovician in western Tazhong area,the corresponding geological characteristics of the every kind of seismic reflection types have been carefully analyzed.The geological causes of the four seismic reflection types are summed up from the differences of these geological characteristics.