Stratigraphic traps account for oil production from clastic reservoirs in 4 studied fields of Texas and Louisiana. Three of the traps occur in Eocene beds of the Upper Gulf Coast area; the fourth is in Cisco rocks and formed on the eastern shelf of the Permian basin. Subsurface data were used to delineate typical barrier bars in the 2 Texas fields. In Louisiana the sandstone stratigraphic traps have a delta-distributary channel pattern.

The electric log character of these sandstone reservoirs may be diagnostic of their sedimentary environments.

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