Feasibility analysis of depleted salt caverns reconstructed into gas storage

摘要

West-East Gas Transmission project intends to establish some gas storage in Jintan Salt Mine, in China, while there are many depleted salt caverns distributed in Jintan. According to the rule of energy storage management and safety regulations, an optimization selecting process system was used to select suitable depleted salt mine caverns which could be reconstructed into gas storage. Six depleted salt caverns which were suitable for gas storage have been selected. The time consumption and the reconstruction cost to rebuild the depleted salt caverns have been estimated based on the casing milling squeeze cement technology (CMSCT). Selecting suitable depleted salt caverns storage, can reduce the time and cost for the construction of gas storage. Assume the gas storage delivers gas every day under the same operating pressure, the shortest payback period is about 2.13 year, reconstruction of a depleted salt cavern.