SAXS and WAXS microscopy applied to mudrocks: A new method for systematic multiscale studies of porosity, pore orientation and mineralogy

L. Leu, P. Bertier, A. Georgiadis, A. Busch, A. Diaz, J. Klaver, J. Schmatz, V. Lutz-Bueno, J. Ihli, H. Ott, M. Blunt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We apply scanning SAXS and WAXS microscopy to different mudrock samples. The method characterizes the microstructure in terms of porosity and preferential pore alignment of small pores 6 -202 nm size. These small features are experimentally challenging to resolve for statistically relevant sample volumes with state of the art characterization techniques, such as imaging methods. A key novelty in this study is the quantification of the mineralogy and mineral phase content from the WAXS measurements. Thus, a detailed quantification and comparison of important microstructural parameters is achieved. The method is used in a raster scanning mode, where thousands of consecutive measurements are performed, with a high micrometric spatial resolution, over mm sized sample areas. Therefore, simultaneously the variation of the microstructure is resolved on the pore and lamina scale. We propose to use scanning SAXS-WAXS microcopy in future studies for investigations of the systematic relationships between mineralogy and the pore network.

Original languageEnglish
Title of host publicationProceedings of the 6th EAGE Shale Workshop
ISBN (Electronic)9789462822870
DOIs
Publication statusPublished - 28 Apr 2019
Event6th EAGE Shale Workshop 2019 - Bordeaux, France
Duration: 28 Apr 20191 May 2019

Conference

Conference6th EAGE Shale Workshop 2019
CountryFrance
CityBordeaux
Period28/04/191/05/19

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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    Leu, L., Bertier, P., Georgiadis, A., Busch, A., Diaz, A., Klaver, J., Schmatz, J., Lutz-Bueno, V., Ihli, J., Ott, H., & Blunt, M. (2019). SAXS and WAXS microscopy applied to mudrocks: A new method for systematic multiscale studies of porosity, pore orientation and mineralogy. In Proceedings of the 6th EAGE Shale Workshop https://doi.org/10.3997/2214-4609.201900311