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Reservoir Containment Characterization for Carbon Dioxide (CO2) Geo-Sequestration in the Niger Delta

	International Journal of Scientific Research and Engineering Development (IJSRED)	Full Text:
	Published Issue : Volume-4 Issue-2
	Year of Publication : 2021
	Unique Identification Number : IJSRED-V4I2P93
	Authors : Onengiyeofori A. Davies, Chigozie Israel-Cookey, Arobo R.C. Amakiri
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Abstract :

Considering its history of producing and exploring hydrocarbon since the late 1950s, leading to the depletion and abandonment of some reservoirs which could be useful in the storage of carbon dioxide, Nigeria, especially the Niger Delta, could be a front runner in the geological storage of carbon dioxide in Africa. There would however be a need to carry out extensive site characterization and selection procedures for the reservoirs of interest. Hence, this study was designed to geophysical assess the reservoir containment potential of a depleted oil and gas reservoir in the Niger Delta for purposes of keeping sequestered carbon dioxide in place. To this end, 5 well logs and a suite of 3D seismic data were analysed to characterize the containment potential of reservoir-seal pairs in the study area. This led to further characterizing the lateral extent and depth of the sealing and reservoir units within the study area. This led to identifying 2 sets of reservoir-seal pairs at depths of 9,450-12,450ft and 9,750-13,500ft respectively, which were shown to exhibit lateral continuity across the area of interest. Findings from this study, in connection with findings from previous researchers that showed that the sealing units for reservoir rocks are predominantly shaley, led to suggestions that the reservoir and sealing units within the study area have enough containment potential to keep sequestered carbon dioxide in place.