Abstract The Jennings salt dome is one of the first domes recognized in the Gulf Coast, having been discovered in 1901. However, the salt was not encountered and cap rock wholly penetrated until after 1926, when the structure was definitely proved to be a true salt dome. Drilling exploration for the past nine years has been limited to the flanks of the dome, mainly its southeast flank. The Yount-Lee Oil Company has drilled the west, north, and southeast flanks of the dome. The southeast flank is the only one proved productive, with four wells now producing out of fourteen drilled. Geophysical as well as geological observations have indicated an overhang on the southeast flank. The productive sands on this flank are Middle Oligocene in age and are classified as high-pressure sands.