Series-1 (Jan – Feb 2020)Jan – Feb 2020 Issue Statistics
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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.
. 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.
. 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.
. 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.
. 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
. 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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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
. Akhter S.H., Bhuiyan A.H., Hossain M., Imam M.B., 1998. Turbidite sequence located in South Eastern Bangladesh [J]. Oil and Gas Journal, pp. 109-111.
. Ahmed, W. and Zaher, M.A., 1980. Stratigraphy of Bangladesh. In: Petroleum and Mineral Resources of Bangladesh, Seminar and Exhibition, 08-12 October 1980, Dacca, pp. 35-40.
. 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.
. Blatt H., Middleton G.V., and Murray R., 1980. Origin of Sedimentary Rocks (2nd ed.). Prentice Hall, New Jersey. Printice- Hall, Englewood Cliffs, N.Y.782p.
. 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|
|Authors||:||C. O. Aigbogun || B.J.O. Mujakperuo|
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.
. 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.
. Allen, J. R. L., (1965). Late Quaternary Niger Delta, and adjacent areas-sedimentary environments and lithofacies: AAPG Bulletin, v. 49, p. 547-600.
. 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.
. 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.
. 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.
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|Paper Type||:||Research Paper|
|Title||:||Post-Stack Reflectivity Inversion for Hydrocarbon Prospectivity in the Niger Delta Field|
|Authors||:||Ekone, N.O || Ehirim, C. N. || Nwosu, J.I. || Dagogo, T.|
Abstract: The present study describes the use of seismicinversion process to optimize the reservoir characterization of a field in the Niger Delta basin of Nigeria. The purpose of the study was to use post-stack reflectivity inversionto predict the lithology, porosity and presence hydrocarbon within the field away from well control. The reservoir interval were discriminated and evaluated to show characterize lithology and identified fluid. The estimated average porosity in B20 reservoir varies from 28% to 31% whilethe volume of shale and water saturation ranges from 6% to 8% and 19% to 27% in Niger Delta reservoir respectively. Theinversionresult and the RMS attribute was used to predict lithology variationin the field. The sand facies indicate high RMS amplitudecorresponding to low acoustic impedance at the top of the reservoir. Higher-quality areas of Niger Deltareservoir were spotted and specific consideration were dedicated to some deep geological structures that have favored hydrocarbon accumulation.
Keywords: Well log analysis, Structural interpretation,Acoustic impedance, Seismic inversion
. Adekanle, A., Enikanselu, P.A.., 2013. Porosity Prediction from Seismic Inversion Properties over ‗XLD' Field, Niger Delta. Am. J. Sci. Ind. Re, 4(1), 31-35.DOI:10.5251/ajsir.2013.4.1.31.35.
. Adepoju Y.O., Ebeniro J.O. and Ehirim C.N. 2013. DHI Analysis Using Seismic FrequencyAttribute On Field-AN Niger Delta, Nigeria. IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) e-ISSN: 2321–0990, p-ISSN: 2321–0982.Volume 1PP 05-10.
. Ali Aamir, Alves Tiago, Saad, FarhadAslam, Ullah, Matee, Toqeer, Muhammad and Hussain, Matloob 2018. Resource potential of gas reservoirs in South Pakistan and adjacent Indian subcontinent revealed by post-stack inversion techniques. Journalof Natural Gas Science and Engineering 49 , pp. 41-55.
. Bouvier, J. D., Kaars-Sijpesteijn, C. H., Kluesner, D. F. and Onyejekwe, C. C., 1989. ―Three-Dimensional Seismic Interpretation and Fault Sealing Investigations‖. Nun River Field, Nigeria. AAPG bulletin. 73(11): 1397 – 1414.
. Dagogo T., ChukwuemekaNgoziEhirim*, Joseph OnukansiEbeniro 2016. Enhanced Prospect Definition Using Well and 4D Seismic Data in a Niger Delta Field Geophysics Research Group, Department of Physics, University of Port Harcourt, Port Harcourt, Nigeria.
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Abstract: Five localities of mangrove environment along the Egyptian Red Sea Coast were selected for the present study. Three of these are located on the coast, whereas, the other two localities are islands. The samples were taken from the surface sediments. Granulometric analysis was carried out to recognize the textural characteristics of these sediments. Also, geochemical analysis was performed for some heavy metals such as Fe, Mn, Zn, Ni, Cu, Pb and Cd to define their concentrations and assess the potential natural and anthropogenic impacts on the considered sediments. It is noted that Wadi El-Gimal coastal area exhibited the highest mean contents of Fe (4851.6g/g), Mn (805.4g/g), Ni (91.0g/g) and Pb (13.9g/g) comparable to the other studied localities. The highest mean values of Cd were recorded in El-Queih coastal area and Abu-Minqar island (2.67g/g and 1.99g/g) respectively......
. Anon. Standard methods for the examination of water and waste water.18th (ed.), Am. Pub. Health Ass., Am. water works Ass., Water Env. Federation. 1992;1200p.
. Birch G. A test of normalization methods for marine sediment, including a new post-extraction normalization (PEN) technique. Hydrobiologia. 2003; 492:5–13.
. Chapman, VJ. Wet coastal ecosystems. Elsevier, Amsterdam. 1977;428p.
. Chaudhuri P, Nath B, Birch G. Accumulation of trace metals in grey mangrove Avicennia marina fine nutritive roots: the role of rhizosphere processes. Marine Pollution Bull. 2014;79:284–292.
. Chen CW, Kao C, Chen C., Dong C. Distribution and accumulation of heavy metals in the sediments of Kaohsiung harbour, Taiwan. Chemosphere. 2007; 66: 1431-1440.