Series-1 Jan – Feb 2020 Issue Statistics
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| Paper Type | : | Research Paper |
| Title | : | Palynological and Paleoenvironmental Study of the Tertiary Formations of the Audouin-Begretto Tertiary and the Bay of 'Milliardaires': South-West of The Lagoons Fault (Côte d'Ivoire) |
| Country | : | Côte d'Ivoire |
| Authors | : | BIÉ Goha René || N‟ZI Jean Claude || GUÉDÉ Koré Elysée || YAO N‟goran Jean-Paul || DIGBÉHI Zéli Bruno |
 |
: | 10.9790/0990-0801010119  |
Abstract: The palynological and paleoenvironmental study of tertiary age deposits are crossed by two hydraulic boreholes located at southwest of the "lagoon fault" on the coastal basin of Abidjan (Côte d'Ivoire) where fifty (50) pairs of thin palynological blades were examined. This study revealed an exceptional richness of these samples in spores and pollen grains associated with rare dinokysts that revealed an Association with Danea californica (Danien), an Association to Apectodinium quinquelatum and Apectodinium homomurphum (Selandian-Thanétian), an Association to Kallosphaeridium yorubaense, Adnatosphaeridium multispinosum, (Lutetian-Bartonian), an Association to Proxapertites operculatus (Priabonian) and an Association to Laevigatosporites ovatu (Aquitanian-Burdigalian). Paleoenvironmentally, sediments have evolved in an internal coastal nerine environment throughout the wells, depending on eustatic movements..
Keywords : Paleoenvironment, palynology, Audouin-Begretto, Palynological Association, Côte d'Ivoire.
[1]. Digbéhi B. Z., D. Mamery, J. Téa, K. R. Yao, J. P. N. Yao, K. David et T. Ignace. Palynostratigraphy and palaeoenvironmental characterization and evidence of Oligocene in the terrestrial sedimentary basin, Bingerville area, Southern Côte d'Ivoire, Northern Gulf of Guinea. African Journal of Environmental Science and Technology. 2012, 6: 28-42.
[2]. Gbangbot. J.M. Caractérisation stratigraphique des aquifères des formations de subsurface de la région des lagunes de côte d‟ivoire : essai de modélisation des environnements de dépôts du tertiaire (Côte d‟Ivoire). Thèse de doctorat, Univ. F.H.B. Cocody, 2012.
[3]. Bié G. R., Digbéhi Z. B., Yao K. R., Téa Y. J., Kangah K. D. & Tahi I., Stratigraphie Palynologique du Maastrichtien Supérieur-Éocène Supérieur du Bassin Sédimentaire Offshore de Côte d‟ivoire, Afrique de l‟Ouest. International Journal of African Studies. 2012, 6: 40-57.
[4]. Bié G. R., Yao N. J.P., Gbangbot J. M., Fofana F., Doukoure M. et Digbéhi Z.B. Caractérisation paléoenvironnementale des formations de l‟Oligocène de Bingerville, Côte d‟Ivoire, à partir de l‟analyse des palynofaciès. Rev. Ivoir. Sci. Technol. 2015, 26: 254 - 278
[5]. Chateauneuf J. J. et Reyre Y. Eléments de palynologie. Applications géologiques. Cours de 3ème cycle en Science de la Terre. 1974.
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| Paper Type | : | Research Paper |
| Title | : | Facies Analysis and Depositional Environment of the Bhuban Formation, Sitapahar Anticline, Kaptai, Chittagong Hill Tracts, Bangladesh |
| Country | : | Bangladesh |
| Authors | : | Sohag Ali || S. Bipulendu Basak || Mrinal Kanti Roy |
|
: | 10.9790/0990-0801012029 |
Abstract: The Bhuban Formation of the Surma Group of rocks is well exposed in the Kaptai to Baraichari road cut section, Sitapahar anticline, Kaptai, Chittagong Hill Tracts, Bangladesh. The main goal of the study is to delineate lithosequences, facies association, depositional model and interpret of different sub environment of the sedimentary deposits of the study area. Litho-stratigraphically the Middle Bhuban Member consists of mainly light gray to black laminated to thinly bedded shale, sandy shale and siltstone and the Upper Bhuban Member of yellowish brown and dark color sandstone, silty shale and black shale. The Lower Bhuban Member is not exposed in the investigated area. Based on texture and sedimentary structures, a total of six lithofacies have been identified such as turbidite sandstone (ST), lenticular laminated sandstone -siltstone-silty shale (Sll), ripple laminated sandstone - siltstone (Sr), wavy laminated sandstone-siltstone-silty shale (Sw), wavy laminated silty shale to shale (Fw), laminated shale (.....
Keywords : Bhuban formation, Lithofacies, Facies association, Depositional model, Environment of deposition
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[3]. Alam,M., Alam,M.A., Curray.J.R., Chowdhury,M.L. and Gani.,M.R.,2003. An overview of the sedimentary geology of the Bengal Basin in relation to the regional tectonic framework and basin fill history. Sedimentary Geology, 155, pp. 179-208.
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[5]. Boggs, Jr. S., 2001. Principles of Sedimentology and Stratigraphy. Prentice Hall, Inc., New Jersey, 88, pp. 115-451.
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| Paper Type | : | Research Paper |
| Title | : | Formation Evaluation of an Onshore X-Field, Niger Delta, Southern Nigeria, Using Well Logs Data |
| Country | : | Nigeria |
| Authors | : | C. O. Aigbogun || B.J.O. Mujakperuo |
|
: | 10.9790/0990-0801013039 |
Abstract: Well logs data from three wells (01, 03 and 04) was employed in the formation evaluation of the onshore X-field, Niger Delta. The geophysical logs used comprises of gamma ray, resistivity, density and neutron log. Sandstone and shale lithology were delineated within the interval logged which is a distinctive quality of the Agbada formation in the Niger Delta. Petrophysical parameters of the reservoirs delineated revealed that Shale volume ranges between 0.034 – 0.15. Porosity and Permeability values range between 26–31% and 1947.08–2541.99 mD. Water saturation ranges between 44% – 98% in the identified reservoirs, which indicates that the proportion of void spaces occupied by water varied from low to high values, thus, indicating both low and high hydrocarbon saturation which ranges from 2% – 56% respectively. The porosity, permeability, shale volume and hydrocarbon pore volume values of the reservoirs within the field proved them to be quite productive.This study has demonstrated that formation evaluation has a vital role to play in reservoirs characterization.
[1]. Aigbedion, J.A and Iyayi, S.E., (2007). Formation Evaluation of Oshioka Field, using geophysical well logs Middle-east Journal of Scientific Research 2(3 –4) p.107 – 110.
[2]. Allen, J. R. L., (1965). Late Quaternary Niger Delta, and adjacent areas-sedimentary environments and lithofacies: AAPG Bulletin, v. 49, p. 547-600.
[3]. Doust, H., and E. Omatsola, (1990). Niger Delta, in J.D. Edwards and P.A. Santagrossi, Eds., Divergent/passive margin basins: AAPG Memoir 45, p. 201-238.
[4]. Ekweozor, C. M., and Daukoru, E.M, (1984). Petroleum source bed evaluation of Tertiary Niger Delta--reply: American Association of Petroleum Geologists Bulletin, V. 68, p. 390-394.
[5]. Evamy, B.D., Haremboure, J., Kamerling, P., Knaap, W.A., Molloy, F.A., and Rowlands, P.H., (1978). Hydrocarbon habitat of Tertiary Niger Delta: American Association of Petroleum Geologists Bulletin, V. 62, p. 277-298.