Characterization of carbonate cements in Upper Jurassic sandstones from the Danish Central Graben, North Sea

M. Thorup, R. Weibel, J. Therkelsen, H. Friis, P. Johannessen, K. Dybkjær

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

Abstrakt

Aiming at predicting reservoir quality of Heno Formation sandstones, a study of its main authigenic phases has been carried out. Lowest porosities and permeabilities are found in intensively carbonate cemented sandstones. The carbonate cement can typically be described as either; early concretionary calcite cement, later patchy calcite cement or Fe-dolomite and ankerite overgrowths and cement. The early concretionary calcite cement is volumetrically very important and is typically found in sediments deposited close to sequence boundaries reflecting shell rich detrital composition, slow sedimentation and thus enabling of early diagenesis. Patchy calcite cement has typically formed later by replacement of Carich feldspar and by recrystallization of discrete carbonate particles. Fe-dolomite and ankerite cement is geographically confined and show indications of being related to late hydrothermal fluid flow.

OriginalsprogEngelsk
Titel76th European Association of Geoscientists and Engineers Conference and Exhibition 2014
UndertitelExperience the Energy - Incorporating SPE EUROPEC 2014
ForlagEAGE Publishing BV
Sider1631-1633
Antal sider3
Vol/bind2
ISBN (Trykt)9781632666949
StatusUdgivet - 2014
Begivenhed76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014 - Amsterdam, Holland
Varighed: 16 jun. 201419 jun. 2014

Konference

Konference76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014
Land/OmrådeHolland
ByAmsterdam
Periode16/06/1419/06/14

Emneord

  • Diagenesis
  • Sandstone
  • Petrography
  • Carbonate cement

Programområde

  • Programområde 3: Energiressourcer

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