alexa The Niger Delta: hydrocarbon potential of a major Tertiary delta province
Geology & Earth Science

Geology & Earth Science

Journal of Geology & Geophysics

Author(s): Harry Doustt

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The Niger Delta is one of the largest delta systems in the world, and forms one of its important hydrocarbon provinces. The subaerial portion covers at least 75 000 km2, and stretches nearly 300 km from apex to coast. An area of even greater size is present below the Gulf of Guinea, where two great lobes protrude a further 250 km from the coast into deep waters. The sedimentary fill of the delta encompasses the Tertiary, during which it has been fed by the drainage systems of the Niger, Benue and Cross rivers. The present-day delta is a complex of individual fluviomarine systems that have succeeded one another in a stepwise fashion as the delta prograded towards the southwest. Hydrocarbons are trapped in growth fault-related structures throughout the delta both onshore and offshore. The ultimate recovery in existing fields probably totals of the order of 4 billion (109) m3 of oil and there is an underevaluated, but probably vast gas resource base. In this contribution the impact of oil exploration on the geological knowledge of this delta terrain is discussed. Emphasis is placed on the sedimentary and structural variability inherent in the delta environment and the influence this has on exploration strategies.

This article was published in Coastal Lowlands and referenced in Journal of Geology & Geophysics

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