Petroleum geochemistry in exploration of the Norwegian shelf : proceedings of a Norwegian Petroleum Society (NPF) conference, Organic Geochemistry in Exploration of the Norwegian Shelf, held in Stavanger, 22-24 October 1984

This volume is the record of a three day symposium entitled "Organic Geochemistry in Exploration of the Norwegian Shelf", which was sponsored by the Norwegian Petroleum Society (Norsk Petroleumsforening) and held at the Rogalands Regional College, Stavanger on 22-24 October 1984. Twenty-nine papers were presented, and all but one are published in full herein. The aim of the conference was to focus on the application of geochemical methods to the current and highly active exploration of the Norwegian offshore. Emphasis was on practical interpretation and case histories rather than laboratory methods and techniques, and a strong attendance was sought among geologists and seismic interpreters active in exploration in Norway and Northwest Europe generally. On all counts the symposium was a great success with a total of 213 participants registered. In his opening address Mr Egil Bergsager, director of the Norwegian Petroleum Directorate, observed that during the 1970s petroleum geochemistry emerged from being a somewhat academic pursuit into a practical aid in exploration for hydrocarbons. This first stage, when many of the basic methods were developed, has now led in the 1980s to an expansion into applications in regional geological studies, including mathematical modelling of thermal history, hydrocarbon migration and basin development. Front Matter....Pages I-IX Front Matter....Pages 1-1 Organic facies and hydrocarbon distributions in the Norwegian North Sea....Pages 3-26 Correlation of the offshore sequences referred to the Kimmeridge Clay Formation—relevance to the Norwegian sector....Pages 27-37 Organic geochemistry in exploration of the Northern North Sea....Pages 39-57 Oil-generating coals....Pages 59-73 Geochemistry of greater Ekofisk crude oils....Pages 75-92 Correlation of Northern North Sea oils: the different facies of their Jurassic source....Pages 93-99 Oil—oil and oil—source rock correlation, Northern North Sea....Pages 101-117 Front Matter....Pages 119-119 Modelling of petroleum genesis and migration with a bidimensional computer model in the Frigg sector, Viking Graben....Pages 121-129 Heat flow, geothermal gradients and maturation modelling on the Norwegian continental shelf using computer methods....Pages 131-143 Modelling burial history, temperature and maturation....Pages 145-152 Basin analysis and maturation modelling, onshore Denmark; a case study from the Danish First Round....Pages 153-160 Quantitative modelling of the sourcing of giant oil fields in the East Shetland Basin (Abstract)....Pages 161-161 Front Matter....Pages 163-163 The geological history and geochemical evaluation of Block 2/2, Offshore Norway....Pages 165-178 Organic matter quality changes in an Upper Jurassic shale sequence from the Viking Graben....Pages 179-183 Organic geochemistry of the Oseberg Field (I)....Pages 185-195 Block 33/6 geochemical evaluation....Pages 197-204 Maturity studies of the Jurassic ‘Coal Unit’ in three wells from the Haltenbanken area....Pages 205-211 Origin of the gas—condensate of the Midgard Field at Haltenbanken....Pages 213-219 Front Matter....Pages 221-221 Surface geochemical exploration for hydrocarbons in offshore areas—principles, methods and results....Pages 223-238 Geochemical exploration on the Norwegian Continental Shelf by analysis of shallow cores....Pages 239-246 Front Matter....Pages 221-221 Regional geochemical analysis of the southern portion of the Norwegian Sector of the North Sea....Pages 247-261 Recently formed methane- derived carbonates from the North Sea floor....Pages 263-266 Front Matter....Pages 267-267 Integrated kerogen typing in the recognition and quantitative assessment of petroleum source rocks....Pages 269-286 Hydrous pyrolysis of asphaltenes....Pages 287-292 Aromatic hydrocarbon variations in North Sea Wells....Pages 293-301 Quantification of steranes and triterpanes by gas chromatographic—mass spectrometric analysis....Pages 303-307 Characterization of sedimentary organic matter using nuclear magnetic resonance and pyrolysis techniques....Pages 309-317 Study of the diagenesis, catagenesis and metagenesis of coals and dispersed organic matter with a high-temperature modified Rock—Eval....Pages 319-326 Analysis of source rocks, reservoir rocks and cap rocks by combined thermal extraction and pyrolysis—gas chromatography....Pages 327-337