Abstract
Liquefied petroleum gases and natural gas have been stored in caverns solution mined in domal and bedded salt for many years. The majority of the natural gas storage caverns in the United States have been developed in domal salt. This paper is a case history of three caverns that were developed specifically for natural gas storage in bedded salt in an area that has historically known only LPG storage in similar caverns. Coring and rock mechanics studies indicated that the salt could be divided into two distinctive types, one of which could not support an underground excavation. Rock mechanics testing was limited to salt cores, but insoluble ledges and intercalated redbed clay played a great part in the ultimate cavern shapes and spans. Based upon development of storage space in the three caverns, conclusions have been reached that will simplify future cavern development.
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