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Hydrocarbon trapping mechanism and petrophysical analysis of Afam field, offshore Nigeria.

Oyeyemi , Kehinde D. and Aizebeokhai, A. P. (2015) Hydrocarbon trapping mechanism and petrophysical analysis of Afam field, offshore Nigeria. International Journal of Physical Sciences, 10 (7). pp. 222-238. ISSN 1992 - 1950

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Abstract

The structural trapping mechanism and petrophysical attributes of Afam field, offshore Niger Delta was evaluated using 3D seismic reflection data and composite well logs data. The structure maps and seismic sections show that the anticlinal structure at the centre of the field, which is tied to the crest of the rollover structure assisted by faults, is the principal structure responsible for the hydrocarbon entrapment in the field. Distinctive fault closures are the dominant structural plays in the field. Structural highs, fault assisted closures comprising two-way closure and four-way dip closed structures are evident on the depth structure maps. Petrophysical analysis of four (4) mapped reservoir sand horizons quantitatively revealed water saturation ranging from 3.07 – 12.02% in Well1 and 7.25 – 19.32% in Well 5; hydrocarbon saturation with range 87.98 – 96.93% (well 1), 80.68 – 92.75% (well 5). The porosity and permeability values of the reservoirs within the field proved them to be quite prolific with the porosity ranging from 24.5 – 31% (well 1), 21.25 – 28.25% (well 5) and permeability range of 2606.91 – 11,777.71mD (well 1), 1050 – 6502.20mD (well 5).

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mr. K. D. Oyeyemi
Date Deposited: 25 Feb 2016 14:21
Last Modified: 26 Feb 2016 10:57
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/6155

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