Oligocene, Gulf Coast, Gulf of Mexico (16)

Comments on Geologic Parameters

16 Rock Mineralogy:

Brine chemistry in the Gulf Coast basin is relatively well known because of the brine of hydrocarbon production. We have selected a high-quality, formation-specific data set (Macpherson, 1992); other data are available (for example, Kreitler and Richter, 1986; Kreitler and others, 1988).

16 Table:

  Calcite cement Quartz cement Dolomite/ ankeritecement Kaolinite cement Detrital feldspar Percent K_feldspar % anorthite
Average of 1000 reservoir sands 4.7 2.6 0.6 1 27 30 20

16 Reference:

Land, L. S., and Macpherson, G. L., 1992, Origin of saline formation waters, Cenozoic section, Gulf of Mexico sedimentary basin: American Association of Petroleum Geologists Bulletin v. 76, p. 1344–1362.

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