Title
History of petroleum systems in the southern part of the Broad Fourteens Basin
Author
Nederlands Instituut voor Toegepaste Geowetenschappen TNO
Verweij, J.M.
Simmelink, H.J.
van Balen, R.T.
David, P.
Publication year
2003
Abstract
2D Basin modelling was used to evaluate the response of source rock maturation, and of petroleum expulsion, migration, accumulation and preservation to the evolution of the southern part of the inverted Broad Fourteens Basin. Modelling results show that the temperature, maturation and petroleum generation history as well as migration characteristics of both the Jurassic oil systems and the Carboniferous gas systems vary over short distances relative to the differences in burial history of the basin. Model results indicate that no major gas accumulations are preserved in the Slochteren Formation along the cross-section at present-day. Gas accumulations are predicted in sandstone-dominated Triassic units in the southern part of the section. Present-day oil accumulations predicted in the Vlieland Sandstone Formation sealed by the Vlieland Claystone Formation (in P9 and Q1 crestal structures) are in accordance with known oil accumulations. Additional oil accumulations are predicted in the sandstone-dominated Middle Werkendam Member, and in sandstones of the Delfland Subgroup. The modelling offers an explanation for the different geochemical compositions of the accumulated oils in the P9 and Q1 areas. Modelling implies, that the oils in the Q1 oil field were sourced by remigrated oils expelled over time, from early mature to mature source rocks of the Posidonia Shale Formation. The biodegraded and water-washed nature of the Q1 oil is explained by the concentrated topography-induced groundwater flow through the Vlieland Sandstone Formation during the Late Cretaceous inversion of the basin. The oils accumulated in the P9 area were sourced from an early mature part of the Posidonia Shale Formation and were probably not affected by water washing and biodegradation because of post-inversion charging of the reservoir.
Subject
Energy / Geological Survey Netherlands
Geological Survey Netherlands
Basin modelling
Broad Fourteens Basin
North Sea Basin
Petroleum systems
biogas
petroleum
basin analysis
basin evolution
hydrocarbon entrapment
hydrocarbon generation
hydrocarbon reservoir
sedimentary basin
biogeochemical cycling
carboniferous
geomorphology
model
petrochemical industry
rock
triassic
North Sea
To reference this document use:
http://resolver.tudelft.nl/uuid:26c28eb9-a0a7-4692-aa8b-fdaac7ba9724
TNO identifier
237013
ISSN
0016-7746
Source
Geologie en Mijnbouw/Netherlands Journal of Geosciences, 82 (82), 71-90
Document type
article