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Dynamic imaging of oil shale pyrolysis using synchrotron X-ray microtomography

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Title: Dynamic imaging of oil shale pyrolysis using synchrotron X-ray microtomography
Authors: Saif, T
Lin, Q
Singh, K
Bijeljic, B
Blunt, MJ
Item Type: Journal Article
Abstract: © 2016. The Authors.The structure and connectivity of the pore space during the pyrolysis of oil shales determines hydrocarbon flow behavior and ultimate recovery. We image the time evolution of the pore and microfracture networks during oil shale pyrolysis using synchrotron X-ray microtomography. Immature Green River (Mahogany Zone) shale samples were thermally matured under vacuum conditions at temperatures up to 500°C while being periodically imaged with a 2μmvoxel size. The structural transformation of both organic-rich and organic-lean layers within the shale was quantified. The images reveal a dramatic change in porosity accompanying pyrolysis between 390 and 400°C with the formation of micron-scale heterogeneous pores. With a further increase in temperature, the pores steadily expand resulting in connected microfracture networks that predominantly develop along the kerogen-rich laminations.
Issue Date: 2-Jul-2016
Date of Acceptance: 1-Jun-2016
URI: http://hdl.handle.net/10044/1/38391
DOI: http://dx.doi.org/10.1002/2016GL069279
ISSN: 0094-8276
Publisher: Wiley
Start Page: 6799
End Page: 6807
Journal / Book Title: Geophysical Research Letter
Volume: 43
Issue: 13
Copyright Statement: © 2016 The Authors. This is an open access article under the terms of the Creative Commons Attribution-Non Commercial-No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Keywords: Meteorology & Atmospheric Sciences
Multidisciplinary
Publication Status: Published
Open Access location: http://10.0.3.234/2016GL069279
Appears in Collections:Earth Science and Engineering



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