In this paper, research is taken on the characteristics of fault, structure and salt layer distribution both on horizontal and vertical surfaces in Pingdingshan area, based on previous achievement such as three-dimensional seismic interpretation, drilling well and old well data. The sealing ability of the cap and the mezzanine is assessed by indoor experiment. Through the above comprehensive evaluation on geological condition, the underground gas storage construction is considered feasible. The study shows the followings. Firstly, the overall structure of the study field salt ore is simple with a small amount of faults and a large thickness of salt layer in the center of deposition. Secondly, the salt is thick and the lateral distribution is stable, where the average thickness of 14 to 20 salt groups is more than 200 meters. What's more, the salt ore content is high and the mezzanine number is little. Therefore, the object layer can be chosen to be there for database building. Thirdly, the sealing ability is also good enough to establish the gas storage, as the lithology of cap and mezzanine is mainly mudstone, with small microscopic pore throat in size, poor connectivity and permeability and bad transportation ability of gas.

salt rock  /  geological condition  /  structural features  /  center of deposition  /  underground gas storage