DGMK Project 718: Mineral Vein Dynamics Modeling
P6: Modelling Fracture Sealing (VeinGrowth)
Researchers: Simon Virgo, Max Arndt, Ben Laurich
Supervisors: Janos Urai, Daniel Köhn (University of Glasgow), Stephen Cox (ANU, Canberra), Steffen Abe, Christoph Hilgers (Reservoir Petrology, RWTH-Aachen)Link to the FRACs Research Consortium website: www.fracs.de
Link to the DGMK project description: DGMK PDF
|This study is carried out within the framework of DGMK (German Society for Petroleum and Coal Science and Technology) research project 718 "Mineral Vein Dynamics Modelling", which is funded by the companies ExxonMobil Production Deutschland GmbH, GDF SUEZ E&P Deutschland GmbH, RWE Dea AG and Wintershall Holding GmbH, within the basic research programme of the WEG Wirtschaftsverband Erdöl- und Erdgasgewinnung e.V. We thank the companies for their finacial support and their permission to publish our results.
- A main aim of this project is to understand the role of existent veins, which act as heterogenities to fracturing depending on orientation and their sealing-driven strength regeneration. Existent veins significantly influence the formation of new fractures and largely control the geometry of a vein network.
- To improve the understanding of crystal growth from oversaturated fluids in fractures is the other major aim of this project. Crystal growth appears as a back-coupled system with fluid flow and material transport in fractures. The growth of crystals and the growth of the vein respectively is influenced by the stress state in the system as this might open the fracture again. The chemical compatibility of fluid and host rock plays a key role in determination of vein-host rock interface strength and therefore the vein growth kinematics (antitaxial vs syntaxial).
Detailed research objectives:
- 2D in situ crystal growth experiments with deformation.
- 2D Numerical modeling of vein microstructures in ELLE (VeinGrowth).
- 3D Discrete element modeling (DEM) of vein network geometries and mechanical heterogenities (with ESyS Particle).
- Analogue modeling of vein network geometries and mechanical heterogenities (examples).
- Remote sensing on high-resolution outcrop panoramas that serve as a natural example database.
Crack-Seal vein networks in Oman
High resolution outcrop panorama of a dense crack-seal calcite vein network.
Top surface of Natih A formation (Turonian). Western flank of Jabal Shams, Oman Mountains.
See the map to the right for the location.
Show Pavement on a bigger map! (CLICK)
Andrea's paper "Meshless Numerical Modeling of Brittle-Viscous Deformation: First Results on Boudinage and Hydrofracturing Using a Coupling of Discrete Element Method (DEM) and Smoothed Particle Hydrodynamics (SPH)" has been accepted for publication in Computational Geosciences.
"What field-data based numerical simulations can teach us about fluid flow in Naturally Fractured Hydrocarbon Reservoirs"
at GED Room 4.08 (Lochnerstrasse 4-20, haus A).
Everybody interested is kindly invited.
You are kindly asked to re-share this announcement! Shortlink: http://bit.ly/EGU-Faults-Fracture-Fluidflow
MSc-students, PhD-students and PostDocs are welcome to apply!
During the annual general assembly of the VAG Alexander and Patrick were honored for their outstanding BSc. graduate during the VAG's annual general assembly last Friday.
University of Glasgow, Scotland United KingdomDr. Daniel Koehn
University of Tübingen, GermanyProf. Dr. Paul Bons
Dr. Enrique Gomez-Rivas
University of Mainz, GermanyDr. Frieder Enzmann,
Dr. Jens-Oliver Schwarz
Karlsruhe Institue of Technology, GermanyProf. jun. Dr. Philipp Blum
Dipl. Geol. Conny Zeeb
University of Bayreuth, GermanyProf. Dr. Heike Emmerich
Dr. Denis Pilipenko
Ankit Kumar, MSc.
Australian National UniversityProf. Dr. Stephen Cox
Paul Stenhouse, BSc.