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001021481 1001_ $$00000-0002-5608-8115$$aRezaeyan, Amirsaman$$b0$$eCorresponding author
001021481 245__ $$aCompaction and clay content control mudrock porosity
001021481 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2024
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001021481 520__ $$aMudrocks, ubiquitous yet poorly understood sedimentary rocks with significant variations in composition and physical properties, form seals for geological carbon dioxide and energy (e.g., hydrogen and methane) storage, repositories for radioactive waste disposal, and reservoirs for natural gas. Understanding the controls on mudrock pore structure is essential for evaluating their porosity. The identification and quantification of controls depend on the nano-to micron scale pore network, which are the subject of this study. Small-angle (SANS) and very small-angle neutron scattering (VSANS) experiments were conducted on 13 diverse mudrock sets, charac-terised by differences in mineralogy, stratigraphy, maturity, and depositional environment. We performed multivariate statistics to systematically characterise the pore structure in 71 samples cross a 5 μm–2 nm pore size range. Our results indicate a multivariate approach more effectively captures the complex controls on porosity rather than single parameters. Compaction and clay content emerge as key primary and secondary controls on mudrock porosity, respectively, upon which we introduce a new porosity classification. Our complementary experimental-statistical assessment involving SANS-derived multiscale porosity sheds new light on the influence of structural controls on storage or production capacity in mudrocks.
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001021481 7001_ $$0P:(DE-HGF)0$$aKampman, Niko$$b1
001021481 7001_ $$0P:(DE-Juel1)130893$$aPipich, Vitaliy$$b2
001021481 7001_ $$0P:(DE-Juel1)172014$$aBarnsley, Lester C.$$b3
001021481 7001_ $$0P:(DE-HGF)0$$aRother, Gernot$$b4
001021481 7001_ $$00000-0002-7447-6277$$aMagill, Clayton$$b5
001021481 7001_ $$0P:(DE-HGF)0$$aMa, Jingsheng$$b6
001021481 7001_ $$00000-0002-3279-5202$$aBusch, Andreas$$b7
001021481 773__ $$0PERI:(DE-600)2019804-8$$a10.1016/j.energy.2023.129966$$gVol. 289, p. 129966 -$$p129966 -$$tEnergy$$v289$$x0360-5442$$y2024
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