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Physicochemical Analysis and Biomarker Distributions in Waxy Crude Oils from the Lower Indus Basin, Pakistan

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dc.contributor.author ABDUS SALEEM
dc.contributor.author TAHIRA FAZEELAT
dc.contributor.author MUHAMMAD ASIF
dc.date.accessioned 2023-10-03T05:19:27Z
dc.date.available 2023-10-03T05:19:27Z
dc.date.issued 2011-12-20
dc.identifier.citation Saleem, A., Fazeelat, T., & Asif, M. (2010). Physicochemical analysis and biomarker distributions in waxy crude oils from the lower Indus basin, Pakistan. Journal of the Chemical Society of Pakistan, 32(6), 794-798. en_US
dc.identifier.issn 0253-5106
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/19763
dc.description.abstract Lower Indus Basin, Sindh Province Pakistan, produces many small to medium petroleum reservoirs. The petroleum hydrocarbons mainly contain two types of oils, condensates (light crude oils) and waxy crude oils (higher wax contents). Condensates are highly thermal mature form of crude oils and do not contain enough molecular information for determination of biological origin. In this study only high wax contents containing crude oils were used for physicochemical analysis and biomarker were analyzed in wax fraction of crude oils. Physicochemical properties such as specific gravity, American Petroleum Institute (API) gravity, sulfur contents and pour points were analyzed from set of four crude oils. Asphaltenes were removed from crude oils and wax fraction was separated from maltenes fraction. The wax fractions were analyzed by high temperature gas chromatography-flame ionization detector (HT-GC- FID). High molecular weight hydrocarbons have been reported in these wax samples up to C₆₀ n-alkanes. A cross plot of API gravity vs %wax content shows a decrease in API gravity with increase in wax content. Biomarkers distribution indicates clearly a significant contribution of terrestrial organic matter in sediments producing these oils. en_US
dc.description.sponsorship The chemical society of Pakistan is an approved society from the PSF. en_US
dc.language.iso en en_US
dc.publisher HEJ Research Institute of Chemistry, University of Karachi, Karachi. en_US
dc.title Physicochemical Analysis and Biomarker Distributions in Waxy Crude Oils from the Lower Indus Basin, Pakistan en_US
dc.type Article en_US


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