|Mt. Simon Formation, Michigan Basin and Ohio Area
Vugrinovich (1986) stated that core analyses near the rim of the basin "show high permeabilities," but "the only drill stem test of the Mt. Simon in the central basin indicated low permeability over approximately 94 meters of section." Briggs (1968, p. 139) stated that "as the proportions of limestone, dolomite, and carbonate-mineral cement increase toward the south and east in the Michigan Basin, the porosity and permeability of the sandstone should decrease proportionally." However, we were only able to obtain permeability data for one well (Briggs, 1968), and we utilized the average permeability in the Mt. Simon for that well.
Briggs, L. I., 1968, Geology of subsurface waste disposal in Michigan Basin, in Galley, J. E., ed., Subsurface disposal in geologic basins—a study of reservoir strata: American Association of Petroleum Geologists Memoir 10, p. 128–153.
Vugrinovich, Raymond, 1986, Patterns of regional subsurface fluid movement in the Michigan Basin: Michigan Department of Natural Resources, Geological Survey Division, Open File Report 86-6.