Geological survey of Denmark and Greenland Bulletin 42 - 2018

Bulletin

Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin

Editors: Jon R. Ineson and Jørgen A. Bojesen-Koefoed

The exposed Jurassic succession in East and North-East Greenland has long been presented as an analogue for equivalent deeply buried strata on the Norwegian conjugate shelf and offshore North-East Greenland. In particular, the Upper Jurassic marine mudstone succession is often ascribed source-rock potential as proven from coeval rocks on the Northwest European margin. Previous outcrop investigations have not convincingly confirmed this potential, however, and three boreholes were drilled between 2008 and 2010 to provide full coverage of the Upper Jurassic – Lower Cretaceous petroleum source-rock succession in eastern Greenland. The Blokelv-1 borehole was drilled in 2008 in central Jameson Land to investigate the Middle Oxfordian – Lower Volgian Hareelv Formation, representing the lowermost part of the composite source-rock succession.

The common aim of the collection of eight scientific papers in this bulletin, introduced by an account of the technical and logistic challenges of the drilling operation, is to document the significance of the Hareelv Formation in a petroleum geological context. Papers on the biostratigraphy, sedimentology, provenance and diagenesis establish the framework and geological history of the succession while companion papers on the source-rock potential, burial and exhumation history and igneous intrusive activity in the region contribute to an improved understanding of the petroleum geology of the Jameson Land Basin.

PREFACE

This bulletin presents a series of nine papers dealing with the succession of Upper Jurassic – Lower Cretaceous sedimentary rocks penetrated by the fully cored Blokelv-1 borehole, drilled in western Jameson Land, central East Greenland in August 2008. The borehole was drilled as the first of three boreholes that in combination were designed to provide full coverage of the Upper Jurassic – Lower Cretaceous petroleum source-rock succession in eastern Greenland. The remaining two boreholes, Rødryggen-1 and Brorson Halvø-1, were drilled on Wollaston Forland in 2009 and 2010, respectively, and the results from these boreholes will be published in a companion volume. The objectives of the drilling campaign were fulfilled, demonstrating that continuous sedimentation of oil-prone petroleum source rocks took place in eastern Greenland over a period of c. 13 million years from the Oxfordian to the Ryazanian, with the Blokelv-1 succession representing the older, Oxfordian–Volgian part of this interval.

The drilling campaign was carried out as one of a number of projects within the framework of a multi-client collaborative programme between GEUS and a long list of petroleum companies entitled Petroleum Geological Studies, Services and Data in East and Northeast Greenland. This collaboration was initiated in 2007 and is ongoing at the time of writing with more than 20 participant companies, a subset of which sponsored the studies presented herein; for contractual reasons, these companies cannot be named. The GEUS–industry collaboration was initiated in recognition of the need for new and better data on many aspects of the petroleum geology of eastern Greenland prior to an anticipated licensing round of offshore North-East Greenland. The Circum-Arctic Resource Appraisal (CARA), undertaken by the United States Geological Survey (USGS), also played an important role in defining the priorities of the collaborative agreement by directing attention towards specific subjects in need of investigation. Licensing rounds in 2012 and 2013 resulted in the award of five licences.

Based on the results of these activities in eastern Greenland, a large number of scientific papers have been published since 2008, and more are expected as confidentiality clauses expire. This volume is, however, the first GEUS Bulletin to be published as a direct consequence of the GEUS–industry collaboration.

Contents

Colophon, contents, preface (pdf, 0.8 Mb) 

The Upper Jurassic Blokelv-1 cored borehole in Jameson Land, East Greenland – an introduction (pdf, 19 Mb)
Morten Bjerager, Stefan Piasecki and Jørgen A. Bojesen-Koefoed 

Biostratigraphy of the Hareelv Formation (Upper Jurassic) in the Blokelv-1 core, Jameson Land, central East Greenland (pdf, 20 Mb) 
Peter Alsen and Stefan Piasecki

Sedimentology, geochemistry and reservoir properties of Upper Jurassic deep marine sediments (Hareelv Formation) in the Blokelv-1 borehole, Jameson Land Basin, East Greenland (pdf, 24 Mb)
Morten Bjerager, Claus Kjøller, Mette Olivarius, Dan Olsen and Niels H. Schovsbo

Diagenesis of Upper Jurassic sandstones of the Blokelv-1 core in the Jameson Land Basin, East Greenland (pdf, 18 Mb)
Mette Olivarius, Rikke Weibel, Niels H. Schovsbo, Dan Olsen and Claus Kjøller

Petroleum potential of the Upper Jurassic Hareelv Formation, Jameson Land, East Greenland (pdf, 9 Mb)
Jørgen A. Bojesen-Koefoed, Morten Bjerager, H. Peter Nytoft, Henrik I. Petersen, Stefan Piasecki and Anders Pilgaard

Provenance of basinal sandstones in the Upper Jurassic Hareelv Formation, Jameson Land Basin, East Greenland (pdf, 1 Mb)
Mette Olivarius, Morten Bjerager, Nynke Keulen, Christian Knudsen and Thomas F. Kokfelt
Supplementary zircon age data (article, pages 115-126) Excel file 

Igneous intrusions in the cored Upper Jurassic succession of the Blokelv-1 borehole, Jameson Land Basin, East Greenland (pdf, 0.5 Mb)
Lotte Melchior Larsen

Burial and exhumation history of the Jameson Land Basin, East Greenland, estimated from thermochronological data from the Blokelv-1 core (including Appendix; pdf, 0.8 Mb)
Paul F. Green and Peter Japsen

Late Jurassic evolution of the Jameson Land Basin, East Greenland – implications of the Blokelv-1 borehole (pdf, 21 Mb)
Morten Bjerager, Peter Alsen, Jørgen A. Bojesen-Koefoed, Tove Nielsen, Stefan Piasecki and Anders Pilgaard

Bulletin 42

Buy the Bulletin

Buy the bulletin by contacting GEUS booksale at:
bogsalg@geus.dk

Price: DKK 230 (ex VAT and postage)