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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology


Journal of Petroleum Geology, Vol.3, No.2, pp. 187-207, 1980

┬ęCopyright 2000 Scientific Press, Ltd.


H. D. Klemme*

* International Petroleum Consultant, Westport, CT, USA.


Petroluem occurs in concentrated accumulations (fields) in depressed, sediment filled areas (basins or provinces) (Coury et al., 1978) (Fig. 1). Worldwide, more than 600 basins (Huff 1979) and sub-basins are known to occur--of these, about a quarter by number (Fitzgerald 1979) and about 50% by area and volume (Fig. 23) have production in some portion to almost all of the basin. Many of the larger and land basins have established production. The principal producing areas are in the more extensive land mass area of the Northern Hemisphere. About 50% of the world's basins by area and volume and three-quarters by number are non-productive. About one-third of these have never been test drilled. More than one-third of the world's basins may be considered exploration frontier basins. basins and differ on about a quarter of those that are either poorly known or are much studied but controversial due to a geologic evolution which often includes a change in basin type through time (Klemme 1977) (Fig. 22).

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