I liked the following post: (sorry for the repeat)Titled "HOW...

I liked the following post: (sorry for the repeat)

Titled "HOW THEY FIND THE OIL"

In the first rush for oil, explorers searched out surface SEEPS of crude oil, set up their primitive cable tool rigs, and started drilling, on the reasonable assumption that there must be more where that came from. The results were entirely satisfactory—until the seeps were exhausted. But already a sharp-eyed Canadian named T. Sterry Hunt had been observing the topographical distribution of oil seeps, and had devised a theory to account for them. He noted that many seeps originated on elongated dome-shaped structures and reasoned that if structures were repeated in the rock layers below, like a nest of inverted mixing bowls, then petroleum rising from the depths toward the surface would be trapped under or between these layers. Hunt termed this type of structure an "ANTICLINE." There remained this question: where had the SEEPS come from, if the oil was trapped in the ANTICLINE. Simple. It has oozed up through minute cracks in the rock.


In 1888, I. C. White put Hunt's theory to a test by drilling four "wildcats"—wells outside known productive areas—and promptly brought in three producers. Ever since, the ANTICLINAL theory has been a gospel that has lost none of its appeal or validity to exploration geologists. It has worked just as well for the Arabian American Oil Company (Aramco) in comparatively recent times as it did a century ago, when Hunt first propounded it. Saudi Arabia's huge Ghawar field, about the size and shape of Long Island, with oil-bearing strata some 250 feet thick, is a classic example of an oil field that was found on an ANTICLINE.


Such well-defined surface anticlines, like the bulge in a gunman's jacket, often betrayed the existence of more anticlines underneath, and these unseeable structures required far more advanced techniques than mere observation to locate. Whereas in the past explorationists had been guided by surface features such as seeps, domes and anticlines, they now began to probe beneath the surface of the earth with instruments, attempting to discern patterns in the structure of the earth's crust which would tell them: "DRILL HERE!"

IN THIS SCENARIO OLD SCHOOL OIL SEEPS AND ANTICLINE PLUS SEISMIC DATA SHOWING ANTICLINE EXTENDS TO DEPTH=DRILL HERE!