TECHNICAL PROGRESS

STRUCTURAL FRAMEWORK

Starfak and Tiger Shoal fields are located in the South Louisiana Shelf Diapir Province of the Gulf of Mexico Basin (Ewing, 1991). Although this region is generally characterized by large-scale structural folds, a product of deep salt movement, geologic conditions in the greater two-field study area are structurally simple compared with those of the complex, diapirically deformed strata that occur to the south. The two fields are associated with several subregional normal growth faults and associated antithetic faults that cause additional structural partitioning.

Northwest-southeast regional strike-oriented seismic profile across Starfak and Tiger Shoal fields illustrating relatively simple structure within the field areas. Northernmost (left) fault is the major growth fault that forms the north boundary of the fields.

Vertical seismic section showing structural (rollover), stratigraphic (bright spot), and fault interpretations on first- and second-order normal faults.