ISSN : 2488-8648
International Journal of Basic Science and Technology
A publication of the Faculty of Science, Federal University Otuoke, Bayelsa State
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ISSN : 2488-8648
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×published date:2025-Apr-04
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Abstract
This work highlights the potential for enhanced hydrocarbon recovery in the Ida Field by identifying viable bypassed zones and understanding production-induced reservoir changes through advanced seismic analysis. A 4-D seismic data in reservoir monitoring and management using the seismic inversion method was carried out in the Ida field onshore Niger Delta Nigeria to evaluate the production-related changes. The 3-D data sets were processed through non-amplitude preserving processing while 4-D data sets were processed through amplitude preserving for reservoir monitoring purposes. Three reservoir units were analyzed and they are designated as HD2000, HD3000 and HD5000. From petro-physical results, the initial average porosity and water saturation are 29.30% and 17.50% respectively. The average porosity and water saturation after the steam injection program are 36% and 28.33% respectively. The result shows an exponential increase in both water saturation and porosity concerning the time-steps due to production effects. The plots of fluid properties against temperature and pressure in the reservoir revealed that gas modulus, gas velocity oil density, and oil modulus decrease with increasing temperature while gas velocity and brine velocity increase with temperature. The result of histogram plot of the velocity ratio and P – impedance indicates high brine saturation in the reservoir which probably results from production-related changes. Finally, the inverted acoustic impedance of 3-D and 4-D seismic volume of the Ida field has enabled the discrimination of different lithologies, and fluids and the bypass hydrocarbon intervals away from the current well location to determine areas for further drilling in the field.
Keywords: Ida field, 3-D Siesmic, 4-D Seismic, Reservoir, Hydrocarbon
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