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Journal of Petroleum Geology, vol. 20(1), January 1997, pp. 51-68
©Copyright 1997. Scientific Press, U.K. All rights reserved.
THE CRETACEOUS SERIES IN THE CHAD BASIN, NE NIGERIA: SOURCE ROCK
POTENTIAL AND THERMAL MATURITY
R. O. Olugbemiro*, B. Ligouis*, and
S. I. Abaa**
The Chad Basin is the largest intracratonic basin in Africa, and one-tenth of its
surface area lies in NE Nigeria. Thermal maturation (mean vitrinite reflectance) and
organic-geochemical (Rock-Eval pyrolysis) studies have been carried out on Cretaceous
shales from the Bima Formation, Gongila Formation and Fika Shale Formation. Samples were
derived from the Kanadi and Albarka exploration wells, which are located about 76 km apart
in the Nigerian sector of the Chad Basin.
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