Bascle, Barbara J., Nancy Shepard, and Phil Smith
Minerals Management Service,United States
Department of the Interior, New Orleans, LA

ABSTRACT

Garden Banks Block 568, OCS G-12662, Well Number 1 is the southernmost well in the Garden Bank area to penetrate sediments. The well encountered 3,790 feet of Pliocene sediments before reaching salt at 15,000 feet. This Pliocene section has a total 550 feet net of water-wet, fair-to-good, reservior-quality sands. Individual sands range from a few feet to a hundred feet thick. Log character indicates sand deposition in a slope fan complex, with sands typically appearing as sharp-based and fining-upward.

The Garden Banks Block 568 area is in the Flexure Production trend, which is characterized by intense salt diaprism. Salt structures include shallow, geographically extensive ridges and shallow, isolated peircement diapirs. Interdomal basins contain thick accumulations of Pliocene and younder sediments. The analyses of well and seismic data from the Garden Banks are yield a structural-features map illustrating prospective areas for Pliocene sand deposition. These depocenters are ranked from low to high for Pliocene sand accumulation and hydrocarbon potential based on well control, thickness of stratigraphic section, reasonable drilling depth, and structural control.

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View/Download Ranking of Pliocene Hydrocarbon Potential in Eastern Garden Banks Chart