Mt. Simon Formation, Michigan Basin and Ohio Area (14)

Comments on Geologic Parameters

14 Porosity:

Vugrinovich (1986) stated that core analyses of the Mt. Simon near the rim of the basin show porosities that are "quite high." In a personal communication, Vugrinovich (2000) stated that the disposal wells in the southern Lower Peninsula and the oil and gas tests penetrating the Mt. Simon were logged with porosity tools. The data are available in the form of hard-copy logs. However, no one has ever attempted to compile a regional (or even local) porosity distribution map. In addition, "there is no demonstrable relationship between depth in the sandstone interval and porosity or permeability." However, there is a high correlation coefficient (0.86) between porosity and permeability (Briggs, 1968; p. 140).

14 Reference:

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.

Vugrinovich, Raymond, 2000, Senior Geologist, Michigan Department of Environmental Quality, Geological Survey Division, personal communication.

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