Print Email Facebook Twitter Pore anisotropy in shale and its dependence on thermal maturity and organic carbon content Title Pore anisotropy in shale and its dependence on thermal maturity and organic carbon content: A scanning SAXS study Author Bahadur, Jitendra (Bhabha Atomic Research Centre; Homi Bhabha National Institute, Mumbai) Chandra, D. (TU Delft Applied Geophysics and Petrophysics) Das, Avik (Bhabha Atomic Research Centre) Vishal, Vikram (Indian Institute of Technology Bombay) Agrawal, Ashish Kumar (Bhabha Atomic Research Centre) Sen, Debasis (Bhabha Atomic Research Centre; Homi Bhabha National Institute, Mumbai) Date 2023 Abstract Pore orientation in shale governs the fluid transport properties that are key to hydrocarbon production and potential CO2 sequestration. The present work deals with the detailed study of nano-heterogeneities in shales, across the bedding plane, of varying thermal maturity and total organic carbon content using scanning small-angle X-ray scattering (SAXS) experiments. The complementary X-ray Micro-Computed Tomography (μCT) and functional group mapping elucidate the heterogeneity in micrometer resolution. 2D SAXS profiles of the shales show elliptical patterns indicating the nanoscale pore anisotropy in shale. The orientation of pores and their spatial variation is strongly dependent on the content of organic matter. The variance in the anisotropy parameter is validated with chemical mapping and high-resolution 3D imaging. Subject AnisotropyFTIRHeterogeneityShaleSmall-angle X-ray scatteringX-ray CT To reference this document use: http://resolver.tudelft.nl/uuid:7c2dc9a7-a06f-4d3d-9d4e-2aeb72a9c341 DOI https://doi.org/10.1016/j.coal.2023.104268 Embargo date 2023-11-19 ISSN 0166-5162 Source International Journal of Coal Geology, 273 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Jitendra Bahadur, D. Chandra, Avik Das, Vikram Vishal, Ashish Kumar Agrawal, Debasis Sen Files PDF 1_s2.0_S0166516223000861_main.pdf 11.32 MB Close viewer /islandora/object/uuid:7c2dc9a7-a06f-4d3d-9d4e-2aeb72a9c341/datastream/OBJ/view