Static reservoir modeling using well log and 3-D seismic data in a KN field, offshore Niger Delta, Nigeria
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Date
2014
Authors
Adeoti, L
Onyekachi, N
Olatinsu, O
Fatoba, J
Bello, M
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Geosciences
Abstract
This study focuses on the application of 3D static model using 3-D seismic and well log data for proper optimization
and development of hydrocarbon potential in KN field of Niger Delta Province. 3D Seismic data were used
to generate the input interpreted horizon grids and fault polygons. The horizon which cut across the six wells
was used for the analysis and detailed petrophysical analysis was carried out. Structural and property modeling
(net to gross, porosity, permeability, water saturation and facies) were distributed stochastically within the constructed
3D grid using Sequential Gaussian Simulation and Sequential Indicator Simulation algorithms. The
reservoir structural model show system of different oriented growth faults F1 to F6. Faults 1 and Fault 4 are the
major growth faults, dipping towards south-west and are quite extensive. A rollover anticline formed as a result
of deformation of the sediments deposited on the downthrown block of fault F1. The other faults (2, 3, 5 and 6)
are minor fault (synthetic and antithetic). The trapping mechanism is a fault assisted anticlinal closure. Results
from well log analysis and petrophysical models classified sand 9 reservoir as a moderate to good reservoir in
terms of facies, with good porosity, permeability, moderate net to gross and low water saturation. The volumetric
calculation of modeled sand 9 horizon reveals that the (STOIIP) value at the Downthrown and Ramp segment
are 15.7 MMbbl and 3.8 MMbbl respectively. This implies that the mapped horizon indicates hydrocarbon
accumulation in economic quantity. This study has also demonstrated the effectiveness of 3-D static modeling
technique as a tool for better understanding of spatial distribution of discrete and continuous reservoir properties,
hence, has provided a framework for future prediction of reservoir performance and production behavior of
sand 9 reservoir. However, more horizontal wells should be drilled to enhance optimization of the reservoir.
Description
Keywords
Porosity , Permeability , Water Saturation , Volumetric Calculation , Facies
Citation
Adeoti, L., Onyekachi, N., Olatinsu, O., Fatoba, J., & Bello, M. (2014). Static reservoir modeling using well log and 3-D seismic data in a KN field, offshore Niger Delta, Nigeria. International Journal of Geosciences, 5(01), 93.