Well logs are used qualitatively to make stratigraphic correlations and environmental interpretations. Formational fluid properties, porosity, and compositional attributes are computed quantitatively from many well logs for use in preparation of exploration maps. Dipmeter data are treated statistically and incorporated with other log data for use in making stratigraphic interpretations and predictions in the subsurface. Computers may be used effectively to process digitized well logs and associated data; plotters are used to display exploration maps automatically.

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