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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 5. (May)

First Page: 927

Last Page: 927

Title: Computer Technique for Color Facies Mapping from Digital Sample Log Data: ABSTRACT

Author(s): C. C. Fried

Article Type: Meeting abstract


As a broad brush exploration tool, the regional lithofacies of a rock unit can be mapped in a traditional stratigraphic display with a computer.

Digital sample log data is retrieved for a correlated interval and summarized to yield net feet of various rock types for each well. Rock-type ratios are calculated for a grid, and points are analyzed to determine where they fall on a conventional 100% triangle. A test is made of the isopach to define the limits of the stratigraphic unit. Colors are assigned based upon the subdivision of the triangle, and are calculated and plotted accordingly. Two triangle subdivision schemes are available.

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Copyright 1997 American Association of Petroleum Geologists