Characterizing the Paleocene turbidites of the North Sea

Maureen Formation, UK Central Graben

Ben Kilhams* (Corresponding Author), Adrian Hartley, Mads Huuse, Chris Davis

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study presents an integrated seismic, well and core-based analysis of the Maureen Formation in the Central Graben of the North Sea. Facies analysis reveals that it is possible to divide the Maureen sandstones into amalgamated, sand- and mud-prone divisions, but that the related chalk facies are complex and imply a range of depositional processes including pelagic fallout, debris flows and turbidity currents. These chalk deposits have an impact on the interpretation of amplitude-based seismic attribute volumes. Detailed petrophysical mapping, supported by seismic analysis, reveals that the Maureen sandstones were deposited in distinct western and eastern fairways controlled by the relict Mesozoic rift topography (although offset stacking is an important intragraben process). The spatial extent of the Maureen sandstones is similar to the overlying Sele and Lista formations and suggests that the broad controls on sediment routing were the same throughout the Lower Palaeogene. Other similarities between these systems include the role of sandstone texture in controlling reservoir quality (although the heterolithic nature of the Maureen sandstones means that porosities and permeabilities are lower). A pattern of intraformational progradation and late-stage backstepping of the sandstone units is likely related to sea-level variability.

Original languageEnglish
Pages (from-to)43-62
Number of pages20
JournalGeological Society Special Publication
Volume403
Issue number1
Early online date6 Feb 2014
DOIs
Publication statusPublished - 2015

Fingerprint

Sandstone
Paleocene
graben
sandstone
chalk
Fallout
facies analysis
Backstepping
turbidity current
Sea level
progradation
Turbidity
fallout
routing
Debris
stacking
debris flow
Paleogene
Topography
sea

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Geology

Cite this

Characterizing the Paleocene turbidites of the North Sea : Maureen Formation, UK Central Graben. / Kilhams, Ben (Corresponding Author); Hartley, Adrian; Huuse, Mads; Davis, Chris.

In: Geological Society Special Publication, Vol. 403, No. 1, 2015, p. 43-62.

Research output: Contribution to journalArticle

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title = "Characterizing the Paleocene turbidites of the North Sea: Maureen Formation, UK Central Graben",
abstract = "This study presents an integrated seismic, well and core-based analysis of the Maureen Formation in the Central Graben of the North Sea. Facies analysis reveals that it is possible to divide the Maureen sandstones into amalgamated, sand- and mud-prone divisions, but that the related chalk facies are complex and imply a range of depositional processes including pelagic fallout, debris flows and turbidity currents. These chalk deposits have an impact on the interpretation of amplitude-based seismic attribute volumes. Detailed petrophysical mapping, supported by seismic analysis, reveals that the Maureen sandstones were deposited in distinct western and eastern fairways controlled by the relict Mesozoic rift topography (although offset stacking is an important intragraben process). The spatial extent of the Maureen sandstones is similar to the overlying Sele and Lista formations and suggests that the broad controls on sediment routing were the same throughout the Lower Palaeogene. Other similarities between these systems include the role of sandstone texture in controlling reservoir quality (although the heterolithic nature of the Maureen sandstones means that porosities and permeabilities are lower). A pattern of intraformational progradation and late-stage backstepping of the sandstone units is likely related to sea-level variability.",
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note = "This study was conducted as part of a PhD at the University of Aberdeen on the Maureen and Lista formations of the Central North Sea by B. Kilhams. The project was sponsored by Shell Upstream International (UI) Europe. The authors would like to thank PGS for the use of the UK part of the Central North Sea MegaSurvey, as well as R. Glendinning at BG, A. Carruthers at BP, R. Ings at Maersk Oil and T. Armstrong at Talisman Energy, who granted permissions and organized core-logging sessions. Further Norwegian well-data analysis was completed by E. Colledge as part of her undergraduate final-year thesis at the University of Aberdeen. The work benefited greatly from help and guidance from a large number of staff at Shell UI Europe in Aberdeen and NAM in Assen (including S. Drake, J. Eldrett, S. Inkster, H. Ligtenberg, J. Marshall, T. Mckie, M. Overstolz, C. Papuc, E. Scott, S. Thackrey, J. Volker and P. Watt). Thanks must also go to S. Archer, D. Boyd (Integrated Sedimentology Ltd), D. Healy, D. Hodgson, D. Jolley, I. Kane, B. Kneller, N. Schofield and A. Scott (Iron Mountain) for providing feedback, help and advice at various points in the project. Finally, we would like to acknowledge the reviews of R. Anderton and H. Johnson; their suggestions greatly improved the manuscript.",
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