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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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The Late Jurassic Norphlet sandstone first produced oil in the Gulf Coast in the Shell-Love et al. Unit 1 W. D. Rhodes et al., Pelahatchie field, Rankin County, Mississippi, from a depth of approximately 17,000 ft. Cores from the discovery and confirmation wells show that halite constitutes about 20 percent by weight of the rock. Flushing of the core increased the porosity from about 8 to 27 percent and permeability from about 4 to about 3,900 md; grain density was increased from 2.52 g/cm3 to 2.63 g/cm3. It is concluded that the halite was derived from the underlying Louann Salt and that the present porosity is a result of leaching by circulating groundwater.
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