Michigan Trenton-Black River opportunities identified with sample attribute mapping

Well site geologists, engineers, and drillers often include information in their final reports that rarely finds its way into prospect maps but that is highly relevant to gas and oil occurrence.These data often include written descriptions of rock attributes, such as the occurrence of vugs, oil-gas shows, fractures, cement textures, and so on, that are difficult to quantify but which nevertheless comprise valuable clues concerning the presence or absence of hydrocarbons. In this article, we describe a technique to use these "sample attributes" to identify and map regional trends in the Trenton and Black River formations in the Michigan basin, but the technique can be applied to other regi...

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