Sequence Stratigraphy Study Within A Chronostratigraphic Framework Of ‘Ningning Field’, Niger Delta

Abstract: Sequence stratigraphy model developed for the Ningning field

is based on the interpretation carried out on the different wells that

penetrated the various subsurface lithologies. Basically three depositional

sequences were delineated from the five wells studied. The

Vail model used made out a third and forth order stratigraphic surfaces

that all fall within the central swamp depobelt of the Basin.

The five wells used show the presentation of the interpretation and

the models. All the sequence tracts were appropriately represented

starting from the Lowstand Transgressive and Highstand system

tracts, except in well 005 where the Lowstand of the second sequence

was missing. This is achieved by incorporating signature

motifs from wireline logs coupled with biostratigraphy data and

inferred paleobathymetry. This has revealed the field-wide reconstruction

of a chronostratigraphically constrained biostratigraphy of subsurface lithological sequences with limited information.

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