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We address this bewilderment with a systematic, common-sense attribute classification method based on real geology. From the end-user point of view (interpreter, geologist, engineer, investor) this can lead to a bewildering maze of confusing geophysical products. More generally, quantitative interpretation combines rock physics, empirical geological parameters, petrophysical information, and geophysical inversion techniques to predict reservoir character from seismically derived attributes. It is systematic and grounded in the reality of the rocks. STAC QI is an integrated deterministic method that incorporates quantitative pre-stack seismic analysis calibrated to well control to predict lithology and fluid content away from the well bore. To increase the resolution and accuracy of the information derived from seismic so that facies variations can be reliably predicted between wells, we use the Seismic Transformation and Classification Quantitative Interpretation (STAC QI) method. Similarly, conventional stacked seismic reflections cannot be correlated to these facies contacts more detailed analysis is necessary. Core interpretation is essential for identifying and describing these facies, as the log response is non-specific to these distinctions. Elsewhere the main variability is represented by the abundance and size of the Rosselia and Asterosoma. Typically, where shale beds and laminae are present they are cross-cut by sand filled Planolites and Thalassinoides. In cores taken from wells tying the MR 2D line, the variability in the Upper McMurray sand is largely defined by the variability in the abundance and types of biogenic sedimentary structures and the degree of preservation of the shale laminae and beds. Lateral changes in the reservoir sand are typically due to variability in the types and distribution of sedimentary and biogenic sedimentary structures. Although Middle McMurray sands are bitumen saturated, the zone is not considered to be part of the prospective reservoir in the project area. Occasional thin remnant deposits of the Middle McMurray Member are present in the lower part of the reservoir zone and consist of a mélange of discontinuous sands and muds. Conceptual stratigraphic column for the McKay Project Area including type log. The Wabiskaw sand is bitumen-saturated and of interest for future prospectivity. Both the Wabiskaw shale and sand are laterally continuous and consistent throughout the McKay project area. The Upper McMurray Member is capped by the green glauconitic sands of the Wabiskaw D Member which is overlain by the Wabiskaw shale and sand (Figure 1). Features such as lateral consistency and fully-marine trace fossil assemblages support the interpretation that the McKay reservoir sands belong in the Upper Marine Member of the McMurray Formation. The sedimentary and biogenic structures found in the main bitumen reservoir sands in the McKay Thermal Project area exhibit strong evidence of marine influence. This paper describes the results of the customized workflow designed to answer these questions and more.