Document Type : Research Paper
Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
Department of Petroleum Resources, Lagos, Nigeria
In order to address some pressing oil industry problems, particularly exploration problems such as drill misses, erroneous forecast in Field Development Plans (FDP’s) etc., a case study was carried out in K-Creek oil field located in the Central swamp depositional belt of the Niger Delta Basin. Both qualitative and quantitative reservoir characterization methods were deployed. A series of well logs that consists of gamma ray, resistivity, sonic, neutron, and density, 3D seismic, and checkshot data were used to analyze and evaluate the rock and petrophysical properties of the K-Creek field. The effective porosity across the reservoirs ranged from 3% to 32.68% in the Sands A to L. The permeability of the reservoir units ranged from 375.21 to 2108.74mD which implies that the permeability varies from very good to excellent. Water saturation estimated from the reservoir sands ranged from 12.91% to 81.99% in Sand A to L, while the hydrocarbon saturation of the reservoirs was 18.01% to 87.09%. Three synthetic listric faults namely F1, F2 and F3 were interpreted across the inlines intercepting the top of the reservoir Sands A to L. The trapping mechanism is fault trapping. The overall analyses besides the results of the porosity, fluid saturation and permeability values in this study proved that the hydrocarbon reservoirs in K-Creek field are economically viable for the hydrocarbon production.