If we are to continue the current rates of petroleum demand and production, it will be necessary to obtain more petroleum during the next 37 years, or by 2000 A.D., than during the past 100 years. And, if discovery of new deposits is to continue as the most important source of petroleum, then the question becomes: "Is there that much oil yet to be discovered within the United States?" This is a geological question.

As has happened so often in the past, one or more of the chief ingredients for a discovery may lie staring us in the face, sometimes for years, before being put into the discovery recipe. The petroleum industry has gradually developed a great many fine geological administrators who deal with reports from highly trained specialists--but the administrators move farther and farther away from the rocks and the specialists become more and more specialized and more microscopic in their outlook. Needed are more experienced geologists in between, who are still with the rocks and able to integrate the various specialized elements of structure, stratigraphy, and fluids into a discovery picture.

Two situations typical of the "in between" problems, with their import to discovery.

1. One is the arched, updip, wedge-out of a potential reservoir rock coupled with a downdip flow of the water. The flanks of every fold, large or small, from the surface to the basement and in every sedimentary area, both productive and non-productive, offer innumerable opportunities for petroleum discovery.

2. The second is the simple fact that many oil fields and oil provinces--including some of the largest--occur in close association with truncated reservoir rocks. Large volumes of potential reservoir rocks, with many unconformities, well known and staring us in the face, but as yet unexplored, are potentially productive on a large scale.

The answer from this "Peek at the Deep" seems to be, "There is enough potential, favorable geology to supply a normal expected demand." The big question that remains is "Will there be sufficient incentive to do the exploring?" And this is in the realm of economics and politics.

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