Part 4 - Berg - Hughes Center

Reservoir Assessment
Comparison of the geohistory and production history of the North Louisiana Salt
Basin to those of the Mississippi Interior Salt Basin indicates that potential undiscovered
and underdeveloped reservoirs are present in the North Louisiana Salt Basin. From an
assessment of the undiscovered and underdeveloped reservoirs of the Mississippi Interior
Salt Basin by Mancini et al. (2000), the Norphlet, Smackover, Haynesville, Cotton
Valley, Hosston/Sligo, Rodessa/Mooringsport/Paluxy, Dantzler/Andrew/Fredericksburg-
Washita, Tuscaloosa and Eutaw reservoirs were characterized as being productive
throughout most of this basin. Reservoirs with a limited areal extent of production
included the Selma Chalk, Wilcox sandstone, and James Limestone. Potential reservoirs
in this basin were identified as subsalt Triassic Eagle Mills sandstone and Lower
Cretaceous carbonates. Lower Cretaceous Hosston/Sligo, Rodessa/Mooringsport/Paluxy,
and Dantzler/Fredericksburg-Washita sandstone facies and Upper Cretaceous Tuscaloosa
and Eutaw sandstone facies were determined to be underdeveloped reservoirs having
high potential for hydrocarbon productivity.
In the North Louisiana Salt Basin, the subsalt Triassic Eagle Mills sandstone and
deeply buried Upper Jurassic sandstone, shale, and limestone facies of the Smackover,
Haynesville, Bossier, and Cotton Valley are identified as potential undiscovered
reservoirs. Upper Jurassic units account for 20% of the current oil production and 38% of
the current gas production in the Mississippi Interior Salt Basin. The depositional and
diagenetic histories of these strata in the North Louisiana Salt Basin are interpreted to be
similar to those in the Mississippi Interior Salt Basin. These units currently account for
some 10% of the oil production and some 10% of the gas production in the North
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