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A regional geologic and petrophysical study of Virgilian (Late Pennsylvanian) and Wolfcampian (early Permian) carbonate rocks within the Tatum Basin of New Mexico was conducted with special emphasis placed on the Bough "A", "B", "C", and "D" zones and the informal Lower Wolfcamp Members of the Cisco and Hueco Formations. The Study area includes the northern part of Lea County and the southern portion of Roosevelt County in New Mexico. This basin is bounded on the north by the Roosevelt Uplift and on the south by the Artesia-Vacuum Trend which coincides with the northern edge of the Delaware Basin. Project results include:
Over 1,800 feet of conventional core has been geologically described and photographed. Thin section petrographic analysis, routine core analysis (porosity, permeability, and grain density) and special core analysis (stressed porosity and permeability at confining pressure), effective oil permeability, electrical properties and mercury capillary pressure were performed. The samples analyzed by special core analysis techniques were also examined with the scanning electron microscope and through X-ray diffraction. A final report summarizes the geological observations and petrophysical results from the analyses performed on the conventionally cored wells in this study.