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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Deep Wilcox Structure and Stratigraphy in the Fandango Field Area, Zapata County, Texas
David M. Levin (1)
ABSTRACT
The Fandango Field in Zapata County, Texas, is a new deep Wilcox trend extension. The deep Wilcox sands are often found at depths of 15,000 to 20,000. Enough well log and seismic control now exists to make an accurate integrated interpretation of regional deep Wilcox structure and stratigraphy.
Deep Wilcox structure and stratigraphy is controlled by regionally extensive shale anticlines. These shale uplifts control deep Wilcox sand distribution, create large anticlines, and cause regional growth faults which frequently influence local structure. Each regional uplift presents a new exploration frontier holding the promise of vast reserves in the deep Wilcox.
The history of Frio-Vicksburg exploration is an analogy to the deep Wilcox trend today. It took forty years to expand Frio exploration from shallow stratigraphic traps down into the enormous reserves in the Gulf of Mexico because each new fault block extension was considered to mark the downdip limit of Frio production. This was of course not true and is not true in the deep Wilcox today. The deep Wilcox trend remains virtually unexplored, and it is my belief that continued work will prove the existence of much more deep Wilcox potential than is currently thought to exist.
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