Major geological control factors on subtle trap reservoirs in Jiyang depression

The forming conditions of subtle reservoirs in Jiyang depression such as lithologic, stratigraphic and buried hill reservoirs differ a lot. However, good hydrocarbon migration condition and reservoir condition are always the most important controlling factors of various traps. This paper analyzes the characteristics of various types of subtle reservoirs, determines the key problems and corresponding solving techniques in the process of seismic data description. This can be used for reference in the exploration and development of subtle reservoirs.