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2013 (Vol. 6, Issue: 06)
Article Information:

Hydrocarbon Potentials, Thermal and Burial History in Herwa-1 Well from the Nigerian Sector of the Chad Basin: An Implication of 1-D Basin Modeling Study

Abubakar Mijinyawa, S.K. Bhattacharya, A. Moumouni, S. Mijinyawa and Ibad Mohammad
Corresponding Author:  Abubakar Mijinyawa 

Key words:  Herwa-1 well, hydrocarbon potentials, one-dimensional modelling, thermal history, , ,
Vol. 6 , (06): 961-968
Submitted Accepted Published
October 06, 2012 December 17, 2012 June 30, 2013
Abstract:

This research study attempt to evaluate the hydrocarbon potentials, thermal and burial history and the timing of hydrocarbon generation in Herwa-1 well within the Nigerian Sector of the Chad basin. Organic geochemical study of some ditch cuttings samples from Herwa-1 well and a One-dimensional basin modeling study was carried out. The result of the geochemical analysis revealed a moderate to good TOC greater than 0.5wt% in Fika and Gongila formation, the Hydrogen Index (HI) ranges from 150-300 (mgHC/g) and the Tmax values falls within the range of greater than or equal to 430C. The hydrocarbon potentials in Herwa-1 well was further supported with the values of S1+S2 which is greater than or equal to 2 mg/g of rock in almost all the samples, suggesting a good hydrocarbon potentials. The 1-D basin model was constructed for Herwa-1 well in order to assess the burial history and thermal maturity of the potential source rocks in the Nigerian sector of the Chad basin. The modeling results indicate that maximum burial occurred in the late Miocene and suggesting erosion might have been the cause of the thinning of the Tertiary sediments in the present time. The calibration of Vitrinite reflectance against Temperature revealed the present day heat flow to be at 60 mW/m2 and Paleo heat flow falls within the range of 68 mW/m2. However, it is also revealed that Oil Window begins at (0.60-1.30% VRr) at the depth of (2000-3000 m) in the middle Cretaceous and the Gas Window start during the late Cretaceous to Tertiary with a value of (1.3-2.5% VRr) at a depth greater than (3500 m).
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  Cite this Reference:
Abubakar Mijinyawa, S.K. Bhattacharya, A. Moumouni, S. Mijinyawa and Ibad Mohammad, 2013. Hydrocarbon Potentials, Thermal and Burial History in Herwa-1 Well from the Nigerian Sector of the Chad Basin: An Implication of 1-D Basin Modeling Study.  Research Journal of Applied Sciences, Engineering and Technology, 6(06): 961-968.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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