The University field, East Baton Rouge Parish, Louisiana, is a deep-seated domal type structure with minor faulting.

Production from the field is obtained from Miocene sands. The main and most important oil-producing horizon is the 6,400-foot sand. Other producing sands are the 4,300-foot gas sand, the 6,700-foot oil sand and the 7,100-foot gas sand. Aside from these four producing horizons, there are three sands which are potentially productive, the 4,100-foot and 6,200-foot sands in which oil has been cored, and the 6,900-foot sand carrying gas. To date, no attempt has been made to produce from these latter sands.

This field is of particular interest because of the presence of a greater number of stratigraphic traps (oil and gas reservoirs) than are known in any other field of the Gulf Coast except in piercement-type domes.

Accumulation in the productive 4,300-foot sand, and in the 4,100-foot and 6,200-foot potentially productive sands is controlled by stratigraphic factors which created traps.

Individual contour maps on these three sands delineate their respective lines of pinchout and with the assistance of cross sections of the sands in the field, provide an accurate picture of the stratigraphic traps which they form. An hypothesized explanation based on the assumption that erratic contemporaneous deposition of sediments from different sources in the same area is given.

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