{"id":9850,"date":"2023-07-19T07:40:31","date_gmt":"2023-07-19T05:40:31","guid":{"rendered":"https:\/\/wp.unil.ch\/geoblog\/?p=9850"},"modified":"2023-07-19T07:40:54","modified_gmt":"2023-07-19T05:40:54","slug":"seismic-reflectivity-of-fractures-in-low-permeability-rocks-the-impact-of-poroelastic-effects-associated-with-damage-zones","status":"publish","type":"post","link":"https:\/\/wp.unil.ch\/geoblog\/2023\/07\/seismic-reflectivity-of-fractures-in-low-permeability-rocks-the-impact-of-poroelastic-effects-associated-with-damage-zones\/","title":{"rendered":"Seismic reflectivity of fractures in low permeability rocks: The impact of poroelastic effects associated with damage zones"},"content":{"rendered":"\n<p class=\"has-background\" style=\"background-color:#f2f2f2\"><em>Th\u00e8se en sciences de la Terre, soutenue le 23 ao\u00fbt 2023 par Edith Sotelo Gamboa, rattach\u00e9e \u00e0 l&rsquo;Institut des sciences de la Terre (ISTE) de la FGSE.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wp.unil.ch\/geoblog\/files\/2023\/07\/esotelo.jpg\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"438\" height=\"414\" src=\"https:\/\/wp.unil.ch\/geoblog\/files\/2023\/07\/esotelo.jpg\" alt=\"\" class=\"wp-image-9851\" srcset=\"https:\/\/wp.unil.ch\/geoblog\/files\/2023\/07\/esotelo.jpg 438w, https:\/\/wp.unil.ch\/geoblog\/files\/2023\/07\/esotelo-300x284.jpg 300w\" sizes=\"auto, (max-width: 438px) 100vw, 438px\" \/><\/a><\/figure>\n\n\n\n<p>La caract\u00e9risation de grandes fractures dans des environnements fractures est pertinente pour une gamme d\u2019applications telles que la s\u00e9questration du carbone ou l\u2019exploitation g\u00e9othermique car elles peuvent servir de conduits pour les fluides d\u2019int\u00e9r\u00eat. La m\u00e9thode sismique est une technique utile pour d\u00e9tecter l\u2019interface entre une fracture et son fond d\u2019encastrement \u00e0 l\u2019aide de l\u2019onde r\u00e9fl\u00e9chie. Dans les fonds perm\u00e9ables, la liaison hydraulique peut am\u00e9liorer la r\u00e9flectivit\u00e9 de la fracture. Cependant, ce n\u2019est plus le cas lorsque le fond est largement imperm\u00e9able. N\u00e9anmoins, la pr\u00e9dominance des zones d\u2019endommagement entourant les grandes fractures peut assurer cette liaison hydraulique avec la fracture.<\/p>\n\n\n\n<p>J\u2019\u00e9tudie ce scenario et l\u2019effet qu\u2019il a sur la r\u00e9flectivit\u00e9 des grandes fractures. Cependant, pour pouvoir repr\u00e9senter des r\u00e9seaux complexes de fractures comme celles associ\u00e9es \u00e0 des zones d\u2019endommagement, il convient d\u2019utiliser un milieu homog\u00e9n\u00e9is\u00e9 \u00e9quivalent. Les approches classiques d\u2019homog\u00e9n\u00e9isation ne sont pas facilement applicables aux milieux \u00e0 structure non p\u00e9riodique comme c\u2019est le cas d\u2019une fracture entour\u00e9e d\u2019une zone endommag\u00e9e noy\u00e9e dans un fond imperm\u00e9able. Ainsi, je fournis \u00e9galement une proc\u00e9dure qui peut g\u00e9rer ce cas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Th\u00e8se en sciences de la Terre, soutenue le 23 ao\u00fbt 2023 par Edith Sotelo Gamboa, rattach\u00e9e \u00e0 l&rsquo;Institut des sciences de la Terre (ISTE) de la FGSE. La caract\u00e9risation de grandes fractures dans des environnements fractures est pertinente pour une gamme d\u2019applications telles que la s\u00e9questration du carbone ou l\u2019exploitation g\u00e9othermique car elles peuvent servir [&hellip;]<\/p>\n","protected":false},"author":47,"featured_media":9851,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[49465],"tags":[],"class_list":{"0":"post-9850","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-theses-soutenues"},"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/posts\/9850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/users\/47"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/comments?post=9850"}],"version-history":[{"count":0,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/posts\/9850\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/media\/9851"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/media?parent=9850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/categories?post=9850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.unil.ch\/geoblog\/wp-json\/wp\/v2\/tags?post=9850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}