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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Parameters Controlling Hydrocarbon Distribution at Tatum's Camp Field, Lamar County, Mississippi
Phillip R. Jackson
ABSTRACT
Structural setting, stratigraphy, diagenesis and hydraulic pathways have all played an important role in the development of a reservoir at Tatum's Camp field in Lamar County, Mississippi. The field is a domal anticline located on the southern flank of Midway Salt Dome within the confines of the Mississippi Salt Basin. The Booth Sandstone, of the Lower Cretaceous Hosston Formation, contains productive mouth bar sands, and structurally equivalent, non-productive channel sands.
Abundant secondary porosity, occasionally occluded by calcite cement, is present in both productive and non-productive intervals. Consistency in the character of the porosity development in these intervals indicates that hydrocarbons migrated into the sands when they were at or close to their present depth of 15,700-15,800 ft (4785-4815 m).
Hydraulic head estimates within the upper Hosston Formation decrease from north to south, suggesting that fluid movement is to the south away from Midway Salt Dome. This pattern is supported by fluid salinity distributions. It is probable that these hydraulic pathways were established at the time of hydrocarbon migration.
The reservoir at Tatum's Camp field appears to be the result of hydrocarbon migration from the north into a stratigraphic pinchout lying across a structurally positive feature.
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