--> Abstract: Sequence Stratigraphic Framework of the Eocene Misoa Formation, Area 2 South, Ceuta Field, Lake Maracaibo Basin, Venezuela, by G. L. Torres, L. Gamez, R. A. Ripple, and E. Gomez; #90942 (1997).

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Abstract: Sequence Stratigraphic Framework of the Eocene Misoa Formation, Area 2 South, Ceuta Field, Lake Maracaibo Basin, Venezuela

TORRES, G. L., L. GAMEZ, R. A. RIPPLE, and E. GOMEZ,

The Eocene Misoa Formation of Area 2 South constitutes one of the most promising areas within the Lake Maracaibo Basin for increasing production and reserves, but because of its depth (15,000 to 18,000 feet), exploration has been intermittent. Cumulative production at Area 2 South since 1979 is 30 MMBBO, with an average initial production per well of over 4,000 BOPD. Recent wells have shown rapid pressure declines due to the limited connectivity and areal distribution of the individual reservoirs.

At Area 2 South, the Misoa has been subdivided into the "B" and "C" sandstones and has been interpreted, along with the overlying Pauji Formation, as a third-order sequence. The "C" is a composite TST with a mixed fluvial/tidal aggradational delta system in the lower section and a tidal progradational delta system in the upper part of the section. Above a regional flooding surface, the "B" sands and Pauji constitute an HST. The top and base of the Eocene (Misoa and Pauji) are major regional unconformities.

The Maracaibo Basin has a complex history of subsidence and tilting. Large regional unconformities frequently create stratigraphic traps, and further work on unconformities and system tracts within the Eocene and Miocene sections may identify stratigraphic traps regionally and within the field. A regional sequence stratigraphic framework for the Cretaceous through Miocene section will be valuable in the identification of new plays and traps in the Maracaibo Basin.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria