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<identifier>oai:HAL:hal-01218408v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Factors controlling permeability of cataclastic deformation bands and faults in porous sandstone reservoirs</title>
<creator>BALLAS, Gregory</creator>
<creator>Fossen, Haakon</creator>
<creator>Soliva, Roger</creator>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bassins ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>University of Bergen (UIB)</contributor>
<description>International audience</description>
<source>ISSN: 0191-8141</source>
<source>Journal of Structural Geology</source>
<publisher>Elsevier</publisher>
<identifier>hal-01218408</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01218408</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01218408</source>
<source>Journal of Structural Geology, Elsevier, 2015, 76, pp.1-21. 〈10.1016/j.jsg.2015.03.013〉</source>
<identifier>DOI : 10.1016/j.jsg.2015.03.013</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsg.2015.03.013</relation>
<language>en</language>
<subject lang=en>Cataclastic band</subject>
<subject lang=en>Permeability</subject>
<subject lang=en>Porous sandstone</subject>
<subject lang=en>Fluid flow</subject>
<subject lang=en>Tectonic regime</subject>
<subject lang=en>Burial depth</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Improving the prediction of sub-seismic structures and their petrophysical properties is essential for realistic characterization of deformed sandstone reservoirs. In the present paper, we describe permeability contrasts induced by cataclastic deformation bands and faults in porous sandstones (766 data synthesized from field examples and the literature). We also discuss the influence of several factors, including tectonic regime, presence of a fault, burial depth, host sandstone porosity, and grain size and sorting for their initiation and permeability. This analysis confirms that permeability decrease is as a function of grain-crushing intensity in bands. Permeability reduction ranges from very limited in crush-microbreccia of compaction bands to high permeability reduction in cataclasites and ultracataclasites of shear-dominated bands, band clusters and faults. Tectonic regime, and especially normal-fault regime, with its tendency to localize strain and generate faults, is identified as the most important factor, leading to the formation of cataclastic bands with high permeability contrasts. Moreover, moderate burial depth (1–3 km) favors cataclastic bands with high permeability contrasts with respect to the host sandstone. High porosity, coarse-grain size and good grain sorting can slightly amplify the permeability reductions recorded in bands.</description>
<date>2015-07</date>
</dc>
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