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Quartz Cementation in Polycrystalline Sandstone: Insights From Phase‐Field Simulations

Prajapati, Nishant 1; Abad Gonzalez, Andres; Selzer, Michael 1; Nestler, Britta 1; Busch, Benjamin ORCID iD icon 2; Hilgers, Christoph 2
1 Institut für Angewandte Materialien – Computational Materials Science (IAM-CMS), Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Geowissenschaften (AGW), Karlsruher Institut für Technologie (KIT)


Present work investigates the dynamics of polycrystalline quartz cement growth in sandstone using a multiphase‐field model. First, the model parameters corresponding to common reservoir temperature and pressure conditions were determined. A parameter related to growth kinetics was ascertained through undisturbed cement growth simulations to aptly capture the known faceting‐dependent growth behavior of quartz. Unrestricted growth simulations for different grain sizes, number of subgrains, and their crystallographic orientations revealed that (I) the model successfully recovers the tendency of quartz cements to grow at a faster overall rate on a coarse grain as compared to finer one and (II) the impact of crystallographic orientations of individual subgrains in polycrystalline grains on cement volume increases with increasing number of subgrains. For applying the model to realistic multigrain systems, we generated digital grain packs through a systematic procedure. These packs fairly represent natural sandstone in terms of grain shapes, sizes, and depositional porosity. The simulated textures in these packs resemble natural samples in terms of crystal morphologies and pore geometries. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000117458
Veröffentlicht am 28.11.2021
DOI: 10.1029/2019JB019137
Zitationen: 21
Web of Science
Zitationen: 18
Zitationen: 20
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.2020
Sprache Englisch
Identifikator ISSN: 2169-9313, 2169-9356
KITopen-ID: 1000117458
Erschienen in Journal of geophysical research / Solid earth
Verlag John Wiley and Sons
Band 125
Heft 2
Vorab online veröffentlicht am 15.02.2020
Nachgewiesen in Dimensions
Web of Science
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