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@ARTICLE{Rezaeyan:1021481,
author = {Rezaeyan, Amirsaman and Kampman, Niko and Pipich, Vitaliy
and Barnsley, Lester C. and Rother, Gernot and Magill,
Clayton and Ma, Jingsheng and Busch, Andreas},
title = {{C}ompaction and clay content control mudrock porosity},
journal = {Energy},
volume = {289},
issn = {0360-5442},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2024-00774},
pages = {129966 -},
year = {2024},
abstract = {Mudrocks, 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.},
cin = {JCNS-FRM-II / JCNS-4 / MLZ / JCNS-1},
ddc = {600},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)KWS3-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001138055200001},
doi = {10.1016/j.energy.2023.129966},
url = {https://juser.fz-juelich.de/record/1021481},
}