Underground Storage of Liquefied Natural Gas

Fujii Masakazu

doi:10.3775/jie.43.10_684

The author outlines the underground storage of natural gas-especiallyliquefied natural gas-which has been developed in accordance with the increase in thedemand of natural gas. Among various storage methods, storage of liquefied natural gasis at present the most effective. Although the existing cylindrical tank of double wallvertical type has technically been accomplished, there still remain some problems to besolved for cheaper method of large capacity storage of natural gas, because of thecondition of location and high-rate construction cost.<BR>Natural gas and petroleum companies have for many years stored LPG andpetroleum products in the cave of airtight lime-stone, shale and salt mines. Based onthis experience, considerations have been taken for the storage of LNG in the cavementioned above or in the cylindrical tank of concrete structure which is installed at thedrilled rock bed, and in 1959 Gas Operation Research Committee of American GasAssociation took up this problem to solve technical questions on the storage system, which seems at present the most economic.<BR>Of many proposed underground storage systems, the installation cost of prestressconcrete tank, on which rock bed conditions have comparatively little effect, is estimatesless than half of the conventional surface tank. This low cost of natural gas storage, USA reports, results in the 30% reduction of LNG production cost.

Underground Storage of Liquefied Natural Gas

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