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Petrophysical properties assessment using wireline logs data at well#3 of Srikail gas field,Bangladesh

China Geology 2022年第3期5卷 393-401页

作者： md.Shahadot Hossain M.Moklesur Rahman Mst.Habiba Khatu md.rubel haque Department of Petroleum and Mining Engineering Jashore University of Science and TechnologyJashore 7408Bangladesh

This study focused on the quantitative analysis of the petrophysical parameters in characterizing the reservoir properties of the Srikail gas field using multi-scale wireline *** parameters(shale volume,porosity,water saturation and hydrocarbon saturation)were estimated from the combination of gamma ray log,resistivity log,density log and neutron log for three hydrocarbon(gas)-bearing zones at well#*** the first time,log records at 0.1 m and 0.2 m intervals were read for this *** showed the average shale volume is 21.07%,53.67%and 51.71%for zone-1,zone-2 and zone-3,*** these zones,the estimated average porosity was 35.89%,29.83%and 28.76%,*** average water saturation of 31.54%,16.83%and 23.39%and average hydrocarbon saturation of 68.46%,83.17%and 76.61%were calculated for zone-1,zone-2 and zone-3,*** zone-2 is regarded the most productive zone of well#*** was found that the values of some parameters(porosity,hydrocarbon saturation and permeability)are higher than the existing ***,this study confirmed that the log reading at minute/close interval provides better quantitive values of the reservoir’s petrophysical *** is expected that this result will contribute to the national gas field development program in future.

关键词： Srikail gas field Multiple wireline logs Reservoir petrophysical properties Quantitative values Gas field development Bangladesh

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Assessment of heavy metal contamination in the sur?cial sediments from the lower Meghna River estuary, Noakhali coast, Bangladesh

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International Journal of Sediment Research 2021年第3期36卷 384-391页

作者： Mohammad Abdul Momin Siddique Mahfuzur Rahman Shahriar md.Arifur Rahman md.rubel Hassan Zeenath Fardous Muhammed Alamgir Zaman Chowdhury Mohammad Belal Hossain Department of Oceanography Noakhali Science and Technology University Agrochemical and Environmental Research Division Institute of Food and Radiation Biology Atomic Energy Research Establishment 5. Department of Fisheries and Marine Science Noakhali Science and Technology University Department of Environmental Science and Disaster Management Noakhali Science and Technology University University of South Bohemia in Ceske Budejovice Faculty of Fisheries and Protection of Waters South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses Research Institute of Fish Culture and Hydrobiology

Sediment samples were collected from ten selected sites of the lower Meghna River estuary, and six heavy metals were analyzed with Atomic Absorption Spectrophotometry(AAS) to assess the contamination level and the metals’ association with sediment grain size. The current results revealed that the mean concentrations of the studied metals were ranked in descending order of iron(Fe)(1.29 ? 103 mg/kg) > zinc(Zn)(42.41 mg/kg) > lead(Pb)(12.48 mg/kg) > chromium(Cr)(10.59 mg/kg) > copper(Cu)(6.22 mg/kg) > cadmium(Cd)(0.28 mg/kg). The geo-accumulation, contamination, and pollution load indexes suggested that the lower Meghna river estuary was not contaminated by Fe, Zn, Pb, Cr, and *** mean size of the sediment ranged from 28.92 to 126.2 mm, and the Pearson correlation coefficient showed a significant association between Fe and Pb(coefficient of determination, r2? 0.836; p < 0.05),and no significant correlation was found between individual metals and grain size, indicating no or low influence on the metals distribution.

关键词： Metal pollution Pollution load index Grain size Trace metals

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