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    Porosity and pore connectivity in immature and artificially matured source rock using BIB-SEM, WMI and MIP

    Access Status
    Fulltext not available
    Authors
    Klaver, J.
    Schmatz, J.
    Krooss, B.
    Stockhausen, M.
    Schwark, Lorenz
    Urai, J.
    Date
    2016
    Type
    Conference Paper
    
    Metadata
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    Citation
    Klaver, J. and Schmatz, J. and Krooss, B. and Stockhausen, M. and Schwark, L. and Urai, J. 2016. Porosity and pore connectivity in immature and artificially matured source rock using BIB-SEM, WMI and MIP, pp. 8-12.
    Source Title
    5th EAGE Shale Workshop: Quantifying Risks and Potential
    ISBN
    9781510822887
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/52709
    Collection
    • Curtin Research Publications
    Abstract

    © 2016, European Association of Geoscientists and Engineers. All rights reserved.Porosity and pore connectivity in organic-rich shales change with thermal maturity. To document such effects, an immature source rock sample was artificially matured under controlled pressure conditions. Afterwards, its pore structure was compared to the one of an untreated sister sample. Pore space and pore connectivity were investigated by Broad Ion Beam (BIB) polishing and Scanning Electron Microscopy (SEM), Mercury Intrusion Porosimetry (MIP) and Wood's Metal Injection (WMI) followed by BIB-SEM. The SEM images of both samples show cracks indicating enhanced porosity. The organic matter of the matured sample exhibits porosity, however, the portion of identifiable organic matter is drastically lower than in the untreated sample. MIP indicates an increase of macro- and meso-porosity for the matured sample, which is consistent with the BIB-SEM observations. WMI at comparable pressures as MIP also reveals clear differences between the two samples: the untreated sample shows a complex heterogeneous intrusion of the Wood's Metal (WM), filling the matrix for several hundreds of micrometers at various locations while other large parts of the matrix remain unfilled. In contrast, in the matured sample WM was identified throughout the entire sample demonstrating good connectivity.

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