Lithofacies and Depositional Environments of Hydrocarbon Reservoir of The Ludo Oil Field in The Coastal Swamp II Depo-Belt, Niger Delta, Nigeria
Publication Date : 20/12/2019
The Paleocene marine transgression marked an important stage in the evolution of the Niger Delta. The transgressive event resulted in the southward progradation of the Niger Delta sediments into the Equatorial Atlantic Ocean (Arua, 1980, Obi et. al., 2003, Oboh-Ikuenobe et. al 2005). The sediment build-up was accompanied by growth fault tectonics normal to the direction of the progradation, resulting to the formation of parallel, fault-bound Northern, Ugheli, Central Swamp I, Central Swamp II Coastal Swamp I, Coastal Swamp II and the offshore depo-belts that are successively younger from north to south (Ekweozor and Daukoru, 1992; Fig. 1). Each depo-belt contains three thick rock units, which from shallowest to the deepest include (i) fluviatile sand belonging to the Benin Formation, (ii) interbedded sand and shale of the marginal marine-shallow marine Agbada Formation and (iii) marine shale representing the Akata Formation (Reyment, 1965 and Nwajide, 2013). The present study focused on the LUDO Oil field that is located within the Coastal Swamp II depo-belt. The oil field forms part of a north-south trending group of oil fields in the eastern part of the Niger Delta. It contains a single oil reservoir that is buried to a depth of over 8,500 ft.
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