World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
Abstract
The hydrocarbon maturation level of Oben-1 well in the northern Niger
Delta sedimentary basin was evaluated using the Lopatin
"Time-Temperature Index (TTI). The result shows that sediments in the
basin are both oil and gas producing with the oil window lying between
the depths of 2.5 to 3.5km. Time of hydrocarbon generation varies from
36 Ma upwards. The hydrocarbon maturation level was estimated for seven
horizons (A, B, C, D, E, F and G), and the results show that horizons
A, B, C and D which are less than 36Ma are non oil and gas producing
(i.e. TTI < 15) while horizons E, F and G which are more than 36Ma
old are both oil and gas producing. This result is in agreement with
the values of Vitrinite reflectance obtained for the well. This study
shows that exploratory wells in the area should be extended beyond the
depth of 3.5kilometres and that the hydrocarbon prospects of the
northern Niger Delta is high. @ JASE