An attempt is made in this paper to present the dynamics of the Eastern Niger Rift Basin (ENRB) with references to the key features and processes of petroleum systems based on published information. The Eastern Niger Basin is a superimposed rift basin with sedimentary structures emplaced during two rifts episodes. The Cretaceous episode is characterized by large, tilted normally faulted blocks trending NW-SE, that were reactivated in the Paleogene, while the Paleogene episode is characterized by normal faulted blocks that trend NNW-SSE. The rifting resulted in different basin structures with the north section dominated by asymmetric half-grabens while the south section is dominated by full-grabens. Three source rocks each belonging to three different play fairways exist: 1) The Paleogene Sokor-1 Member source belongs to second cycle syn-rift play associated with fluvial/deltaic facies; 2) Cretaceous Yogou and Donga sources from first cycle post-rift play associated with alluvial/fluvial/deltaic and marine clastic and carbonate facies; and 3) Cretaceous Yogou source from first cycle transitional play associated with mudstone and shale of transitional facies. The ENRB comprises two source-reservoir-seal assemblages: a lower assemblage of Upper Cretaceous and an Upper assemblage of the Paleogene. Except for the Yogou source which possesses a self-contained petroleum system, the rest of the source rocks release their oils into the Paleogene Sokor-1 Member reservoir sealed regionally by the Oligocene Sokor-2 Member. The Paleogene assemblage is charged from the Upper Cretaceous Yogou Formation through fractures emplaced during the rifting episodes.
References
[1]
Zanguina, M., Bruneton, A. and Gonnard, R. (1998) An Introduction to the Petroleum Potential of Niger. Journal of Petroleum Geology, 21, 83-103. https://doi.org/10.1111/j.1747-5457.1998.tb00647.x
[2]
Harouna, M. and Philip, R.P. (2012) Potential Petroleum Source Rocks in the Termit Basin, Niger. Journal of Petroleum Geology, 35, 165-185. https://doi.org/10.1111/j.1747-5457.2012.00524.x
[3]
Okosun, E. (1995) Review of the Geology of Borno Basin. Journal Mining and Geology, 21, 113-122.
[4]
Abdelkarim, A.M.A., Huneau, F., Hachim, M.S., Ketchemen Tandia, B., Fantong, W.Y., Rabe, S., Bobadji, I., Maduabuchi, C.M., Adegboyega, A.A. and Foto, E. (2017) Integrated and Sustainable Management of Shared Aquifer Systems and Basins of the Sahel Region Lake Chad Basin. RAF/7/011.
[5]
Brownfield, M.E., Schenk, C.J., Charpentier, R.R., Klett, T.R., Cook, T.A., Pollastro, R.M. and Tennyson, M.E. (2010) Assessment of Undiscovered Oil and Gas Resources of the Chad Basin Province, North-Central Africa: U.S. Geological Survey Fact Sheet 2010-3096, 2 p.
[6]
Fairhead, J.D. (1986) Geophysical Controls on Sedimentation within the African Rift Systems. In: Frostick, L.E., Renaut, R.W., et al., Eds., Sedimentation in the African Rifts, Geological Society, London, Special Publications 25, 19-27. https://doi.org/10.1144/GSL.SP.1986.025.01.03
[7]
Genik, G.J. (1993) Petroleum Geology of Rift Basins in Niger, Chad, and Central African Republic. AAPG Bulletin, 77, 1405-1434. https://doi.org/10.1306/BDFF8EAC-1718-11D7-8645000102C1865D
[8]
Africa Energy Intelligence, November 10, 2010. http://www.africaintelligence.com
[9]
Genik, G.J. (1992) Regional Framework, Structural and Petroleum Aspects of Rift Basins in Niger, Chad and the Central African Republic (C.A.R.). Tectonophysics, 213, 169-185. https://doi.org/10.1016/B978-0-444-89912-5.50036-3
[10]
Savannah Petroleum (2018) Kunama Oil Discovery and Exercise of Drilling Rig Option. 11 July 2018.
[11]
Burke, K.C. (1976) The Chad Basin: An Active Intra-Continental Basin. Tectonophysics, 36, 197-206. https://doi.org/10.1016/B978-0-444-41549-3.50018-9
[12]
Fairhead, J.D. (1988) Mesozoic Plate Tectonic Reconstructions of the Central South Atlantic Ocean: The Role of the West and Central African Rift System. Tectonophysics, 155, 181-191. https://doi.org/10.1016/0040-1951(88)90265-X
[13]
Popoff, M. (1988) Du Gondwana a’ l’Atlantique sud: Les connexions du fosse de la Benoue avec les bassins du nordest Brésilien jusqu’à, l’ouverture du Golfe du Guinée au Crétacé inferieur. Journal of African Earth Sciences, 7, 409-431. https://doi.org/10.1016/0899-5362(88)90086-3
[14]
Benkhelil, J. (1988) Structure et evolution géodynamique du bassin intracontinental de la Bénoué, Nigeria. Bulletin des Centres de Recherches Exploration—Production Elf-Aquitaine, 12, 29-128.
[15]
Fairhead, J.D. and Binks, R.M. (1991) Differential Opening of the Central and South Atlantic Oceans and the Opening of the Central African Rift System. Tectonophysics, 187, 191-203. https://doi.org/10.1016/0040-1951(91)90419-S
[16]
Fairhead, J.D. and Green, C.M. (1989) Controls on Rifting in Africa and the Regional Tectonic Model for the Nigeria and East Niger Rift Basins. Journal of African Earth Sciences, 8, 231-249. https://doi.org/10.1016/S0899-5362(89)80027-2
[17]
Zhou, L.H., Su, J.Q., Dong, X.W., Shi, B.Q., Sun, Z.H., Qian, M.L., Lou, D. and Liu, A.P. (2017) Controlling Factors of Hydrocarbon Accumulation in Termit Rift Superimposed Basin, Niger. Petroleum Exploration and Development, 44, 358-367. https://doi.org/10.1016/S1876-3804(17)30042-3
[18]
Wan, L.K., Liu, J.G., Mao, F.J., Lv, M.S. and Liu, B. (2014) The Petroleum Geochemistry of the Termit Basin, Eastern Niger. Marine and Petroleum Geology, 51, 167-183. https://doi.org/10.1016/j.marpetgeo.2013.11.006
[19]
Guiraud, R., Issawi, B. and Bellion, Y. (1985) The Guineo Nubian Lineaments, a Major Structural Zone of the African Plate. Comptes Rendus de l’Académie des Sciences, 11, 17-20.
Guiraud, M. and Maurin, J.C. (1992) Early Cretaceous Rifts of Western and Central Africa: An Overview. Tectonophysics, 213, 153-168. https://doi.org/10.1016/0040-1951(92)90256-6
[22]
Guiraud, R., Binks, R.M., Fairhead, J.D. and Wilson, M. (1992) Chronology and Geodynamic Setting of Cretaceous-Cenozoic Rifting in West and Central Africa. Tectonophysics, 213, 227-234. https://doi.org/10.1016/B978-0-444-89912-5.50039-9
[23]
Yassin, A.M., Hariri, M.M., Adbullatif, O.M. and Korvin, G. (2017) Evolution History of Trans-Tensional Pull-Apart, Oblique Rift Basin and Its Implication on Hydrocarbon Exploration: A Case Study from Sufyan Sub-Basin, Muglad Basin, Sudan. Marine and Petroleum Geology, 79, 282-299. https://doi.org/10.1016/j.marpetgeo.2016.10.016
[24]
Guiraud, M. (1993) Late Jurassic Rifting-Early Cretaceous Rifting and Late Cretaceous Transpressional Inversion in the Upper Benue Basin (NE Nigeria). Bulletin Centres Recherches Exploration-Production Elf-Aquitaine, 17, 371-383.
[25]
Liu, B., Pan, X., Wan, L., Mao, F., Liu, J., Lu, M., Wang, Y., Chen, Z. and Jiang, H. (2012) Polyphase Rift Evolution of the Termit Basin, Eastern Niger: Constraints from Structural and Sedimentary Records. Geoscience, 26, 317-325.
[26]
Harouna, M., Pigott, J.D. and Philp, R.P. (2017) Burial History and Thermal Maturity Evolution of the Termit Basin, Niger. Journal of Petroleum Geology, 40, 277-297. https://doi.org/10.1111/jpg.12676
[27]
Tang, L., Huang, T., Jin, W., Lu, Z., He, C., Ning, F., Wang, P. and Chen, Q. (2009) Differential Deformation and Hydrocarbon Accumulation in the Superimposed Basins. Earth Sciences Frontiers, 16, 13-22. https://doi.org/10.1016/S1872-5791(08)60099-8
[28]
Xue, L.Q., Wan, L.K. and Mao, F.J. (2012) Petroleum Migration and Accumulation in Termit Depression of East Niger Basin and Implications for Discovery of Well Dibeilla. Oversea Exploration, No. 4, 53-60. (In Chinese)
[29]
Liu, B., Wan, L.K., Mao, F.J., Liu, J., Lü, M.S. and Wang, Y. (2015) Hydrocarbon Potential of Upper Cretaceous Marine Source Rocks in the Termit Basin, Niger. Journal of Petroleum Geology, 38, 157-175. https://doi.org/10.1111/jpg.12604
[30]
Lü, M.S., Xue, L.Q. and Wan, L.K. (2015) Main Controlling Factors of Paleogene Hydrocarbon Accumulation of Termit Basin, West African Rift System. Earth Science Frontiers, 22, 207-216. (In Chinese)
[31]
Allen, P.A. and Allen, J.R. (1990) Basin Analysis: Principles and Applications. Blackwell Scientific Publications, Oxford.
[32]
Allen, P.A. and Allen, J.R. (2005) Basin Analysis: Principles and Applications. Blackwell Scientific Publications, Oxford, 549 p.
[33]
Sinclair, I.K. and Withjack, M.O. (2008) Mid to Late Cretaceous Structural and Sedimentary Architecture at the Terra Nova Oilfield, Offshore Newfoundland-Implications for the Tectonic History of the North Atlantic. In: Brown, D.E., Ed., Central Atlantic Conjugate Margins, Dalhousie University, Halifax, 125-141.
[34]
Silverstein, A., Silverstein, V. and Nunn, L.S. (2009) Plate Tectonics. Twenty First Century Books. 120 p.
[35]
Wang, X., Wan, L., Jiang, Z., Liu, R., Wang, X.B., Tang, W., Gao, Y., Liu, S. and Xu, W. (2017) Controlling Factors and Accumulation Model of Hydrocarbon Reservoirs in the Upper Cretaceous Yogou Formation, Koulele Area, Termit Basin, Niger. Journal of Earth Science, 28, 1126-1134. https://doi.org/10.1007/s12583-016-0936-5
[36]
Janssen, M.E., Stephenson, R.A. and Cloetingh, S. (1995) Temporal and Spatial Correlations between Changes in the Motions and the Evolution of Rifted Basins in Africa. GSA Bulletin, 107, 1317-1332. https://doi.org/10.1130/0016-7606(1995)107<1317:TASCBC>2.3.CO;2
[37]
Avbovbo, A., Ayoola, E. and Osahon, G. (1986) Depositional and Structural Styles in Chad Basin of Northeastern Nigeria. AAPG Bulletin, 70, 1787-1798. https://doi.org/10.1306/94886D21-1704-11D7-8645000102C1865D
[38]
Xiao, H., Wang, T.G., Li, M., Lai, H., Liu, J., Mao, F. and Tang, Y. (2019) Geochemical Characteristics of Cretaceous Yogou Formation Source Rocks and Oil-Source Correlation within a Sequence Stratigraphic Framework in the Termit Basin, Niger. Journal of Petroleum Science and Engineering, 172, 360. https://doi.org/10.1016/j.petrol.2018.09.082
[39]
Lai, H., Li, M., Liu, J., Mao, F., Xiao, H., He, W. and Yang, L. (2018) Organic Geochemical Characteristics and Depositional Models of Upper Cretaceous Marine Source Rocks in the Termit Basin, Niger. Palaeogeography, Palaeoclimatology, Palaeoecology, 495, 292-308. https://doi.org/10.1016/j.palaeo.2018.01.024
[40]
Liu, J., Zhang, Z., Li, Y., Tang, H., Xiao, H., Lai, H. and Yang, C. (2019) Oil Charge History of Paleogene-Eocene Reservoir in the Termit Basin (Niger). Australian Journal of Earth Sciences, 66, 597-606. https://doi.org/10.1080/08120099.2019.1568301
[41]
Zhao, J. and Li, M. (2016) The Oil Migration Pathway and Hydrocarbon Charging History of Petroleum Systems in Termit Basin, Eastern Niger. AAPG Annual Convention and Exhibition, Calgary, 19-22 June 2016, AAPG Search and Discovery Article 80560.
[42]
Bodnar, R.J. (2003) Introduction to Fluid Inclusions. In: Samson, I., Anderson, A. and Marsh, D., Eds., Fluid Inclusions: Analysis and Interpretation, Mineral. Assoc. Canada, Short Course 32, 1-8.
[43]
Moretti, I. (1998) The Role of Faults in Hydrocarbon Migration. Petroleum Geoscience, 4, 81-94. https://doi.org/10.1144/petgeo.4.1.81
