Based on core description and synthetic analysis of seismic sections, the palaeoepigenetic dissolution in the research area was comprehensirely studied. The geomorphic features, signs and characteristics and zonation of the palaeokarst were described and the controlling factors of palaeoepigenetic dissolution were discussed. It also makes a thorough study on the developmental history of palaeokarst of the area and its changes. In accordance with the tectonic development history of the area, the carbonate rock dissolution process of the Lower Palaeozoic in the area can be divided into four stages. The study has profound significance for further study of reservoir characteristics and pore evolution and synthetic evaluation of exploration blocks.
