
R A Downing (ed.)
et al.
Published online:
31 October 2023
Published in print:
04 November 1993
Online ISBN:
9781383027266
Print ISBN:
9780198542858
Contents
Chapter
13 The Chalk as a hydrocarbon reservoir
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Pages
250–266
-
Published:November 1993
Cite
D’Heur, M, 'The Chalk as a hydrocarbon reservoir', in R A Downing, M Price, and G P Jones (eds), The Hydrogeology of the Chalk of North-West Europe (Oxford , 1993; online edn, Oxford Academic, 31 Oct. 2023), https://doi.org/10.1093/oso/9780198542858.003.0013, accessed 24 Apr. 2025.
Abstract
Below the North Sea, in the central part of the Tertiary basin, the Chalk is a major hydrocarbon reservoir. Oil and gas were first discovered in 1966 in chalks of Cretaceous and. Palaeocene ages in Well A-lx drilled in the Danish sector but the find was not considered to be commercial. Further north, in the southern part of the Norwegian sector, Well 2/11-1, drilled in 1969 on the flank of the Valhall structure, penetrated 17 m of hydrocarbon-bearing chalk which flowed at 900 barrels per day. Again, at that time, this was not regarded as a commercial discovery and the Valhall Field was actually not developed until 1976.
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