Abstract：Salt rock is considered as a perfect medium for underground oil and gas storage. Normally，underground salt caverns for gas storage are formed by aqueous fusion method according to specific design. Presently，there is no underground natural gas storages operation in abandoned salt caverns in the world. Based on numerical results with finite element method(FEM) code ABAQUS，the creep behaviors of caverns and rock pillars and the range of creep damage of the cavern roof are approached. Furthermore，the working pressure for gas storage in abandoned salt caverns and location of casing shoes are discussed. The conclusions drawn from the study can provide useful reference to the practical engineering.
