Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland
The fully cored Blokelv-1 borehole was drilled through Upper Jurassic strata in the central part of the Jameson Land Basin, central East Greenland. The borehole reached a total depth of 233.8 m with nearly 100% recovery of high-quality core. An extensive analytical programme was undertaken on the co...
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Geological Survey of Denmark and Greenland
2018
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ftdoajarticles:oai:doaj.org/article:208fdeadbe734c5e8891f38dd349ab40 2023-05-15T16:03:40+02:00 Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland Morten Bjerager Claus Kjøller Mette Olivarius Dan Olsen Niels H. Schovsbo 2018-12-01T00:00:00Z https://doaj.org/article/208fdeadbe734c5e8891f38dd349ab40 EN eng Geological Survey of Denmark and Greenland https://eng.geus.dk/media/20465/nr42_p039-064.pdf https://doaj.org/toc/1604-8156 https://doaj.org/toc/1904-4666 1604-8156 1904-4666 https://doaj.org/article/208fdeadbe734c5e8891f38dd349ab40 Geological Survey of Denmark and Greenland Bulletin, Vol 42, Pp 039-064 (2018) Hareelv Formation Jameson Land Basin Upper Jurassic core description facies analysis reservoir quality Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 article 2018 ftdoajarticles 2022-12-31T01:44:59Z The fully cored Blokelv-1 borehole was drilled through Upper Jurassic strata in the central part of the Jameson Land Basin, central East Greenland. The borehole reached a total depth of 233.8 m with nearly 100% recovery of high-quality core. An extensive analytical programme was undertaken on the core; sedimentological interpretation and reservoir characterisation were based on facies analysis combined with conventional core analysis, bulk geochemistry and spectral gamma and density scanning of the core. The Upper Jurassic Hareelv Formation was deposited in relatively deep water in a slope-to-basin setting where background sedimentation was dominated by suspension settling of organic-rich mud in oxygen-depleted conditions. Low- and high-density gravity-flow sandstone interbeds occur throughout the cored succession. About two-thirds of the high-density turbidite sandstones were remobilised and injected into the surrounding mud-rock. The resulting succession comprises nearly equal amounts of mudstones and sandstones in geometrically complex bodies. Ankerite cementation occurs in 37% of the analysed sandstones in varying amounts from minor to pervasive. Such ankerite-cemented sandstones can be identified by their bulk geochemistry where Ca > 2 wt%, Mg > 1 wt% and C > 1 wt%. The analysed mudstones are rich in Al, Fe, Ti and P and poor in Ca, Mg, Na and Mn. The trace-metal content shows a general increase in the upper part of the core reflecting progressive oxygen depletion at the sea floor. The reservoir properties of the Blokelv-1 sandstones were evaluated by both conventional core analysis and using log-derived porosity and permeability curves. The high-density turbidite beds and injectite bodies are a few centimetres to several metres thick and show large variations in porosity and permeability, in the range of 6–26 % for porosity and 0.05–400 mD for permeability. Individual sandstone units that are 1–7 m thick yield a net vertical reservoir thickness of 40 m with porosities of 15–26% and permeabilities ... Article in Journal/Newspaper East Greenland Greenland Geological Survey of Denmark and Greenland Bulletin Directory of Open Access Journals: DOAJ Articles Greenland Jameson Land ENVELOPE(-23.500,-23.500,71.167,71.167) Hareelv ENVELOPE(-22.617,-22.617,70.700,70.700) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Hareelv Formation Jameson Land Basin Upper Jurassic core description facies analysis reservoir quality Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Hareelv Formation Jameson Land Basin Upper Jurassic core description facies analysis reservoir quality Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 Morten Bjerager Claus Kjøller Mette Olivarius Dan Olsen Niels H. Schovsbo Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
topic_facet |
Hareelv Formation Jameson Land Basin Upper Jurassic core description facies analysis reservoir quality Geology QE1-996.5 Geophysics. Cosmic physics QC801-809 |
description |
The fully cored Blokelv-1 borehole was drilled through Upper Jurassic strata in the central part of the Jameson Land Basin, central East Greenland. The borehole reached a total depth of 233.8 m with nearly 100% recovery of high-quality core. An extensive analytical programme was undertaken on the core; sedimentological interpretation and reservoir characterisation were based on facies analysis combined with conventional core analysis, bulk geochemistry and spectral gamma and density scanning of the core. The Upper Jurassic Hareelv Formation was deposited in relatively deep water in a slope-to-basin setting where background sedimentation was dominated by suspension settling of organic-rich mud in oxygen-depleted conditions. Low- and high-density gravity-flow sandstone interbeds occur throughout the cored succession. About two-thirds of the high-density turbidite sandstones were remobilised and injected into the surrounding mud-rock. The resulting succession comprises nearly equal amounts of mudstones and sandstones in geometrically complex bodies. Ankerite cementation occurs in 37% of the analysed sandstones in varying amounts from minor to pervasive. Such ankerite-cemented sandstones can be identified by their bulk geochemistry where Ca > 2 wt%, Mg > 1 wt% and C > 1 wt%. The analysed mudstones are rich in Al, Fe, Ti and P and poor in Ca, Mg, Na and Mn. The trace-metal content shows a general increase in the upper part of the core reflecting progressive oxygen depletion at the sea floor. The reservoir properties of the Blokelv-1 sandstones were evaluated by both conventional core analysis and using log-derived porosity and permeability curves. The high-density turbidite beds and injectite bodies are a few centimetres to several metres thick and show large variations in porosity and permeability, in the range of 6–26 % for porosity and 0.05–400 mD for permeability. Individual sandstone units that are 1–7 m thick yield a net vertical reservoir thickness of 40 m with porosities of 15–26% and permeabilities ... |
format |
Article in Journal/Newspaper |
author |
Morten Bjerager Claus Kjøller Mette Olivarius Dan Olsen Niels H. Schovsbo |
author_facet |
Morten Bjerager Claus Kjøller Mette Olivarius Dan Olsen Niels H. Schovsbo |
author_sort |
Morten Bjerager |
title |
Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
title_short |
Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
title_full |
Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
title_fullStr |
Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
title_full_unstemmed |
Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland |
title_sort |
petroleum geology of the upper jurassic – lower cretaceous of east and north-east greenland: blokelv-1 borehole, jameson land basin: sedimentology, geochemistry and reservoir properties of upper jurassic deep marine sediments (hareelv formation) in the blokelv-1 borehole, jameson land basin, east greenland |
publisher |
Geological Survey of Denmark and Greenland |
publishDate |
2018 |
url |
https://doaj.org/article/208fdeadbe734c5e8891f38dd349ab40 |
long_lat |
ENVELOPE(-23.500,-23.500,71.167,71.167) ENVELOPE(-22.617,-22.617,70.700,70.700) |
geographic |
Greenland Jameson Land Hareelv |
geographic_facet |
Greenland Jameson Land Hareelv |
genre |
East Greenland Greenland Geological Survey of Denmark and Greenland Bulletin |
genre_facet |
East Greenland Greenland Geological Survey of Denmark and Greenland Bulletin |
op_source |
Geological Survey of Denmark and Greenland Bulletin, Vol 42, Pp 039-064 (2018) |
op_relation |
https://eng.geus.dk/media/20465/nr42_p039-064.pdf https://doaj.org/toc/1604-8156 https://doaj.org/toc/1904-4666 1604-8156 1904-4666 https://doaj.org/article/208fdeadbe734c5e8891f38dd349ab40 |
_version_ |
1766399363231252480 |