ABSTRACT

In mature basins where independent oil companies are active, the abundance of well and seismic data makes the task of geologists and geophysicists slow and tedious. An interactive work station has been implemented to display exploration data in the form of base maps, contour maps, and cross sections, with emphasis on the use of lithologic data. Lithologic tops and bases are used to compute net sand, sand percentage, and number-of-sand-layers contour maps or their carbonate facies equivalents. In conjunction with log-curve shapes, these lithofacies maps provide indication of depositional environments. In addition, the cross sections display lithologic successions along well bores, facilitating the location of lateral facies variations, updip pinch-outs, or erosional truncations. The relative low cost and ease of use of the work station make it easier for smaller oil companies to compete successfully in the search for stratigraphic and combination traps.

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