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Md. Shahadot Hossain, M. Moklesur Rahman, Mst. Habiba Khatu, Md. Rubel Haque, 2022. Petrophysical properties assessment using wireline logs data at well#3 of Srikail gas field, Bangladesh, China Geology, 5, 393-401. doi: 10.31035/cg2022023
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Petrophysical properties assessment using wireline logs data at well#3 of Srikail gas field, Bangladesh
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Abstract
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 logs. Petrophysical 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#3. At the first time, log records at 0.1 m and 0.2 m intervals were read for this study. Result showed the average shale volume is 21.07%, 53.67% and 51.71% for zone-1, zone-2 and zone-3, respectively. For these zones, the estimated average porosity was 35.89%, 29.83% and 28.76%, respectively. The 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, respectively. Thus zone-2 is regarded the most productive zone of well#3. It was found that the values of some parameters (porosity, hydrocarbon saturation and permeability) are higher than the existing results. Therefore, this study confirmed that the log reading at minute/close interval provides better quantitive values of the reservoir’s petrophysical properties. It is expected that this result will contribute to the national gas field development program in future.
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References
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Md. Shahadot Hossain, M. Moklesur Rahman, Mst. Habiba Khatu, Md. Rubel Haque, 2022. Petrophysical properties assessment using wireline logs data at well#3 of Srikail gas field, Bangladesh, China Geology, 5, 393-401. doi: 10.31035/cg2022023
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Figure 1.
Location map of the 27 gas fields (number followed the Table 1) with regional tectonic settings (map revised from Shetol MH et al., 2019).
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Figure 2.
a–Thickness of HC zones; b–comparison of average shale volume of zones 1, 2 and 3; c–comparison of average porosity of zones 1, 2 and 3; d–comparison of average water saturation of of zones 1, 2 and 3; e–comparison of average hydrocarbon saturation of zones 1, 2 and 3; f–comparison of petrophysical parameters of of zones 1, 2 and 3.