North Snorre Field area

Fig. 1. The North Sea area and the location of the Snorre Field on the Tampen Spur structural high in the northernmost North Sea. Major structural elements are of late Jurassic-Early Cretaceous age.

The Snorre Field is located in the northern North Sea area within the Tampen Spur, a structural high... 

Nystuen, J.P., Knarud, R., Jorde, K. Stanley, K. (1989) Correlation of Triassic to lower Jurassic sequences, Snorre Field and adjacent areas, northern North Sea. In Correlation in Hydrocarbon Exploration (Ed. Collinson, J.D.), pp. 273-289. Norwegian Petroleum Society. Graham Trotman, London. 

These results indicated that the Draupne formation in Kitchen 1 west and northwest of Snorre has not reached the level of transformation required by the asphaltene kinetic data from the Snorre field. Kitchen 1 was modelled to only have reached a transformation ratio of less than 5% (Fig. 6) at present. In addition the limited source rock volume in this area cannot account for the petroleum volumes in the Snorre field. Thus, we would suggest on the basis of our maturity modelling, that the proposed kitchen area west and northwest of the Snorre (Kitchen 1) is immature. Shows in the 33/6-2 well, classified as in situ generated, not representative of significant petroleum migration, support this hypothesis. Additionally the fact that the main intra-field maturity trend known in Snorre (Horstad et al. 1995) is the increase in biomarker and aromatic maturity parameters from south to north, suggests clearly that Kitchen 1 did not contribute to Snorre as any influx of lower maturity petroleum from... 

The Snorre Field is located in the northern part of the Tampen Spur (Fig. 7). Major reservoir units are the Triassic Lunde Formation (northern part of the field) and the lower Jurassic Statljord Formation (southern part of the field). The reservoir contains an undersaturated black oil and has a generally low GOR (62-160 Sm /Sm ), typically increasing towards the north. The Snorre Field represents a rotated fault block cut by NNE-SSW and NE-SW faults during Upper Jurassic rifting (Horstad et al. 1995). The main source rock in the area is the Upper Jurassic Draupne Formation, a prolific Type II marine source rock. The underlying Heather Formation is also locally developed as a Type II, oil prone source rock. The main kitchen area of the oil encountered in the Snorre Field is situated in the basin directly east and south of the field (Horstad et al. 1995 Skeie et al. this volume). The Snorre... 

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