EVALUATION OF THE PETROPHYSICAL PROPERTIES OF THE K-FIELD, NIGER DELTA BASIN’S OFFSHORE DEPOBELT, NIGERIA
DOI:
https://doi.org/10.58885/ijees.v7i1.50.eta%20Keywords:
Reservoir, Well log, Hydrocarbon, Lithology, Characterization.Abstract
This study, titled “Petrophysical Evaluation of K-Field in the Niger Delta Basin’s (NDB) Offshore Depobelt” assesses the potential of hydrocarbon (HC) generation and quality of reservoirs within the field. Petrophysical parameters evaluated include lithology, shale volume (Vsh), porosity (φ), permeability (Ka), hydrocarbon saturation (Sh), water saturation (Sw), and net-to-gross (NTG) ratio. Well log analyses of wells 6, 7, 10, and 11 were conducted for reservoir characterization. Lithology was delineated from the gamma ray log, while hydrocarbon-bearing zones were identified using resistivity and density logs. Porosity was derived from density log readings, shale volume from gamma ray data, and Sw using Archie’s equation, with resistivity of the formation water (Rw) gotten from plotting Pickett’s plot.
Two lithologies sand and shale were identified, comprising five reservoirs. Gross thickness ranges from 64–243 ft, net thickness 53–178 ft, and net-to-gross ratios 0.734–0.937. Porosity values range 23–30%, permeability 2,204–6,031 mD, and Sh 47–73%. Statistical evaluation ranked Reservoir E8000 as the most prolific and D8000 the least. The results confirm that reservoirs D5200, D7000, D8000, E8000, and F3000 are viable for HC production.
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