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Ataga Oil Field: Modeling Hydrocarbon Generation and Risk of Biodegradation

	International Journal of Scientific Research and Engineering Development (IJSRED)
	Published Issue : Volume-3 Issue-4
	Year of Publication : 2020
	Unique Identification Number : IJSRED-V3I4P19
	Authors :Chiamaka Udoka Eke, Selegha Abrakasa

Chiamaka Udoka Eke, Selegha Abrakasa "Ataga Oil Field: Modeling Hydrocarbon Generation and Risk of Biodegradation" International Journal of Scientific Research and Engineering Development (IJSRED) Vol3-Issue4 | 116-123.

Abstract :

The hydrocarbon generation was modelled for the Akata formation in the Ataga Oil field area. S2 and TOC data were obtained from well logs, while other essential geological input data were derived from literature. PetroMod version 12 was used for a 1D model to achieve the objectives of predicting maturity, timing of generation, evaluate risk of in-reservoir process such as biodegradation. The model unravel that early hydrocarbon generation at the interformational shale within the Ataga oil field area commenced at 3km, which corresponds to top of the Akata formation at 0.54%Ro in the Late Miocene, the critical moment which depict the generation-migration-accumulation of petroleum within the petroleum system was observed at the Pleistocene. The biodegradation risk which is about 50% at the surface reduces to zero % at about 2.1km and lower, where reservoirs were observed. This infers that the generated and accumulated hydrocarbon is preserved and do not stand the possibility of biodegradation.

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