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Mancini, E.A., Benson, D.J., Hart, B.S., Balch, R.S., Parcell, W.C., and Panetta, B.J., 2000: Appleton field case study (eastern Gulf Coastal Plain) field development model for the Upper Jurassic microbial reef reservoirs associated with paleotopographic basement structures, Am. Assoc. Petroleum Geologists Bull. 84:1699-1717.
Abstract
Appleton oil field, located in Escambia County, Alabama, was discovered in 1983 through the use of two-dimensional seismic reflection data. The field structure is a northwest-southeast-trending paleotopographic ridge comprised of local paleohighs. The field produces from microbial reef boundstones and shoal grainstones and packstones of the Upper Jurassic Smackover Formation. Because Appleton field is approaching abandonment, owing to reduced profitability, an integrated geoscientific study of the field structure and reservoir was undertaken to determine whether drilling additional wells in the field would extend the productive life of the reservoir. The conclusion from the integrated study, which included advanced carbonate reservoir characterization, three-dimensional geologic visualization modeling, seismic forward modeling, porosity distribution analysis, and field production analysis, was that a sidetrack well drilled on the western paleohigh should result in improved oil recovery from the field. The sidetrack well was drilled and penetrated porous Smackover reservoir near the crest of the western paleohigh. The well tested 136 bbl oil/day.
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