Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data
The Hammerfest Basin (HB) is an important area for petroleum exploration in the southwestern Norwegian Barents Sea. This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish genetic relationships and to assess maturity, mixing and petroleum...
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ftuoldenburg:oai:oops.uni-oldenburg.de:2672 2023-10-09T21:50:13+02:00 Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data Murillo, Wendy A. Vieth-Hillebrand, Andrea Horsfield, Brian Wilkes, Heinz 2016 http://oops.uni-oldenburg.de/2672/ http://www.sciencedirect.com/science/article/pii/S0264817215301331 unknown Murillo, Wendy A. and Vieth-Hillebrand, Andrea and Horsfield, Brian and Wilkes, Heinz (2016) Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data. Marine and petroleum geology, 70. pp. 119-143. ISSN 0264-8172 Chemistry Earth sciences and geology Article PeerReviewed 2016 ftuoldenburg 2023-09-11T07:23:49Z The Hammerfest Basin (HB) is an important area for petroleum exploration in the southwestern Norwegian Barents Sea. This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish genetic relationships and to assess maturity, mixing and petroleum alteration processes. The research was based on geochemical as well as bulk and compound-specific stable carbon and hydrogen isotope analyses of oil and condensate samples from all major fields and discoveries in the HB, including extracts from Jurassic and Triassic source rocks. Interpretations of light hydrocarbon composition and isotope data clearly identify four main petroleum groups affected by microbial degradation, water washing, evaporative fractionation and high thermal maturity level. Based on polycyclic aromatic hydrocarbons (PAHs), marine and higher-plant-derived biomarkers and carbon isotopic composition (δ13C) of individual petroleum hydrocarbons, four petroleum families (I–IV) are recognized in the HB and a distinction can be made among oils and condensates from different stratigraphic levels and sectors of the Basin. Most oils and condensates from the HB consist of mixtures with small maturity variations; however, oils from Middle Triassic reservoirs in the Goliat field showed larger maturity variations according to biomarker, PAH and light hydrocarbon–maturity ratios. In the HB, geochemical and isotopic data allowed unraveling mixtures of hydrocarbons derived mainly from Jurassic, Triassic and Paleozoic source rocks. Article in Journal/Newspaper Barents Sea Goliat Hammerfest Hammerfest Basin Carl von Ossietzky Universität Oldenburg: /oops/ - Oldenburger Online-Publikations-Server Barents Sea |
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Carl von Ossietzky Universität Oldenburg: /oops/ - Oldenburger Online-Publikations-Server |
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ftuoldenburg |
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unknown |
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Chemistry Earth sciences and geology |
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Chemistry Earth sciences and geology Murillo, Wendy A. Vieth-Hillebrand, Andrea Horsfield, Brian Wilkes, Heinz Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
topic_facet |
Chemistry Earth sciences and geology |
description |
The Hammerfest Basin (HB) is an important area for petroleum exploration in the southwestern Norwegian Barents Sea. This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish genetic relationships and to assess maturity, mixing and petroleum alteration processes. The research was based on geochemical as well as bulk and compound-specific stable carbon and hydrogen isotope analyses of oil and condensate samples from all major fields and discoveries in the HB, including extracts from Jurassic and Triassic source rocks. Interpretations of light hydrocarbon composition and isotope data clearly identify four main petroleum groups affected by microbial degradation, water washing, evaporative fractionation and high thermal maturity level. Based on polycyclic aromatic hydrocarbons (PAHs), marine and higher-plant-derived biomarkers and carbon isotopic composition (δ13C) of individual petroleum hydrocarbons, four petroleum families (I–IV) are recognized in the HB and a distinction can be made among oils and condensates from different stratigraphic levels and sectors of the Basin. Most oils and condensates from the HB consist of mixtures with small maturity variations; however, oils from Middle Triassic reservoirs in the Goliat field showed larger maturity variations according to biomarker, PAH and light hydrocarbon–maturity ratios. In the HB, geochemical and isotopic data allowed unraveling mixtures of hydrocarbons derived mainly from Jurassic, Triassic and Paleozoic source rocks. |
format |
Article in Journal/Newspaper |
author |
Murillo, Wendy A. Vieth-Hillebrand, Andrea Horsfield, Brian Wilkes, Heinz |
author_facet |
Murillo, Wendy A. Vieth-Hillebrand, Andrea Horsfield, Brian Wilkes, Heinz |
author_sort |
Murillo, Wendy A. |
title |
Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
title_short |
Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
title_full |
Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
title_fullStr |
Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
title_full_unstemmed |
Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data |
title_sort |
petroleum source, maturity, alteration and mixing in the southwestern barents sea : new insights from geochemical and isotope data |
publishDate |
2016 |
url |
http://oops.uni-oldenburg.de/2672/ http://www.sciencedirect.com/science/article/pii/S0264817215301331 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Goliat Hammerfest Hammerfest Basin |
genre_facet |
Barents Sea Goliat Hammerfest Hammerfest Basin |
op_relation |
Murillo, Wendy A. and Vieth-Hillebrand, Andrea and Horsfield, Brian and Wilkes, Heinz (2016) Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea : new insights from geochemical and isotope data. Marine and petroleum geology, 70. pp. 119-143. ISSN 0264-8172 |
_version_ |
1779313271023599616 |