Identifying the natural radionuclides in frequently consumed foodstuffs has attracted research interests from many researchers. In this study, we reported the quantities of natural radionuclides in frequently consumed foods in the community of Ode-Irele in Ondo State, Nigeria. Data obtained for this study were analysed using the gamma-ray spectrometer. Careful examination of six (6) different foodstuffs obtained at random for four (4) different times from the community’s local market was done: all of them were discovered to be rich in Th-232, U-238 and K-40. The activity concentrations of the foodstuffs ranged from 58.21±5.93 Bqkg-1 to 1.91±0.41 Bqkg-1 with a mean value of 11.74±1.22 Bqkg-1 for Th-232, 41.82±9.48 Bqkg-1 to 3.12±0.39 Bqkg-1 with a mean value of 12.38±2.27 Bqkg-1 for U-238 and 1854.12±126.83 Bqkg-1 to 134.72±12.62 Bqkg-1 with mean value of 280.22±30.08 Bqkg-1 for K-40. The minimum and maximum dose rates discovered from the foodstuffs are respectively 8.03nGyh-1 and 132.35nGyh-1. The mean value of all absorbed dose rates (28.99nGyh-1) was found to be less than the world average limit of 55.0nGyh-1. Comparison of the annual committed effective doses determined from the mean of the natural radionuclides (0.155mSvy-1) in the foodstuffs to the global recommended limit (1mSvy-1), showed that the frequently consumed foods by the people in the community posed no important radiation-related risk to them.

Adoption of Enhanced Oil Recovery (EOR) to boost the hydrocarbon saturation (Sh) of reservoirs has caught the interests of many researchers in Geosciences. Evidence from literature shows that both primary and secondary recovery methods have failed to account for about 60% hydrocarbon (HC) that is trapped in the reservoirs and getting to discover large productive new fields has become a herculean task. This study identified the fluid nature and boundaries of reservoirs using some relevant geophysical (petrophysical) parameters and reservoir rocks physical features such as shale volume (Vsh), permeability (K), water and hydrocarbon saturation (Sw& Sh). Petrophysical data were sourced from the data bank of the Department of Geology, Obafemi Awolowo University, Ile-Ife, Nigeria. Analysis of data was done using the PETREL 2010 and OpendTect 4.6.0 versions for quality checking, delineation of identified reservoirs, fluid contacts demarcation and fluid types’ determination. The interpreted data were thereafter loaded into Microsoft Excel environment in order to adopt suitable statistical relations for the estimation of Vsh, K, Sw and Sh. Exploration of about 59.4% HC with NaOH, 64.5% HC with KOH, 69.5% HC with NH4OH and 78.5% HC with LiOH were discovered after the (EOR) flooding process. Comparison of the Vsh, K, Sw and Sh values before EOR with the values after EOR further showed that the reservoirs produced more HC with EOR. This study concluded that more hydrocarbon saturation can be achieved from reservoirs when EOR is carried out.