{"id":1263,"date":"2009-01-29T08:55:26","date_gmt":"2009-01-29T08:55:26","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/01\/29\/etats-unis-le-1\/"},"modified":"2012-07-12T11:19:21","modified_gmt":"2012-07-12T11:19:21","slug":"etats-unis-le-1","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/01\/29\/etats-unis-le-1\/","title":{"rendered":"Etats-Unis: les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole se sont accrues en 2007"},"content":{"rendered":"<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;<strong><span style=\"font-size: 1.4em\">L<\/span><\/strong>&lsquo;Energy Information Administration confirme les r\u00e9sultats 2007 concernant les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole sur le territoire am\u00e9ricain. Les r\u00e9serves nationales de gaz naturel ont r\u00e9alis\u00e9 un v\u00e9ritable bond de 13% \u00e0 6731 milliards de m3, cette avance repr\u00e9sentant 1,3 fois la consommation annuelle de gaz naturel autochtone. L&rsquo;essentiel de ce progr\u00e8s provient de la mise en oeuvre des techniques de forage horizontal avec fragmentation dans les schistes bitumineux ou les veines de charbon profondes. Il est possible de citer l&rsquo;immense gisement de schistes bitumineux (shale) de Barnett Shale ou encore le gisement de sables compacts de la Cotton Valley au Texas. Ces nouvelles r\u00e9serves prouv\u00e9es de gaz ont automatiquement fait cro\u00eetre celles de gaz liqu\u00e9fiables associ\u00e9es qui se sont accrues de 8% \u00e0 9,1 milliards de barils. <a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/usaprovedreserveschangemap20071.jpg\"><img loading=\"lazy\" decoding=\"async\" height=\"370\" alt=\"Usaprovedreserveschangemap2007\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/usaprovedreserveschangemap2007.jpg\" width=\"480\"  \/><\/a> <\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; Quand aux r\u00e9serves prouv\u00e9es de p\u00e9trole, elles se sont accrues d&rsquo;un petit 2% (+0,35 milliards de barils) pour atteindre 21,3 milliards de barils. Les plus grands progr\u00e8s ont \u00e9t\u00e9 enregistr\u00e9s en Alaska, au Texas et dans un Etat en plein d\u00e9veloppement le Dakota du Nord (FIG.). Ce dernier&nbsp; profite du d\u00e9veloppement d&rsquo;un gisement de schistes, la Formation de Bakken qui produit apr\u00e8s fracturation du p\u00e9trole l\u00e9ger. <\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; A la fin 2007 les r\u00e9serves prouv\u00e9es de liquides (p\u00e9trole + gaz liqu\u00e9fiables) am\u00e9ricaines atteignaient donc 30,4 milliards de barils qui sont \u00e0 comparer aux 7 millions de barils extraits quotidiennement (5,2 millions de p\u00e9trole et 1,8 millions de gaz liqu\u00e9fi\u00e9s).<\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/peakoil3.gif\"><img loading=\"lazy\" decoding=\"async\" height=\"145\" alt=\"Peakoil\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/peakoil1.gif\" width=\"250\"  \/><\/a>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; Le cas des Etats-Unis est exemplaire pour d\u00e9montrer la futilit\u00e9 des mises en \u00e9quation de l&rsquo;\u00e9puisement des r\u00e9serves mondiales de p\u00e9trole \u00e0 partir de mod\u00e8les math\u00e9matiques enfantins, conduisant \u00e0 des d\u00e9riv\u00e9es de sigmo\u00efdes en forme de pic sym\u00e9trique (FIG.). En effet au cours du temps les techniques de prospections s&rsquo;affinent, les techniques d&rsquo;exploitations se perfectionnent et rendent exploitable ce qui ne l&rsquo;\u00e9tait pas quelques ann\u00e9es auparavant. Les r\u00e9serves existantes se trouvent ainsi revaloris\u00e9es gr\u00e2ce \u00e0 des extensions techniques ou g\u00e9ographiques. Ces r\u00e9sultats montrent \u00e9galement l&rsquo;impact d&rsquo;un param\u00e8tre du premier ordre: <u>le prix accord\u00e9<\/u> aux ressources \u00e9nerg\u00e9tiques qui d\u00e9termine les efforts et les capitaux consentis pour les extraire du sous-sol. L&rsquo;Am\u00e9rique du Nord est assise sur d&rsquo;\u00e9normes gisements de schistes bitumineux, de filons de charbons profonds, de sables bitumineux plus ou moins compacts d&rsquo;o\u00f9 elle tirera d&rsquo;immenses quantit\u00e9s d&rsquo;hydrocarbures au cours de ce si\u00e8cle et probablement au-del\u00e0. L&rsquo;\u00e9volution du prix accord\u00e9 devra s&rsquo;aligner sur la complexit\u00e9 des proc\u00e9d\u00e9s mis en oeuvre, ils auront un effet d&rsquo;autor\u00e9gulation sur la consommation d&rsquo;\u00e9nergie dont nous avons eu un avant go\u00fbt en 2008.<\/p>\n<p>Le 29 Janvier 2009.<\/p>\n<p>&#8211;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;L&lsquo;Energy Information Administration confirme les r\u00e9sultats 2007 concernant les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole sur le territoire am\u00e9ricain. Les r\u00e9serves nationales de gaz naturel ont r\u00e9alis\u00e9 un v\u00e9ritable bond de 13% \u00e0 6731 milliards de m3, cette avance repr\u00e9sentant 1,3 fois la consommation annuelle de gaz [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":11649,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Etats-Unis: les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole se sont accrues en 2007 - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/01\/29\/etats-unis-le-1\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Etats-Unis: les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole se sont accrues en 2007 - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;L&lsquo;Energy Information Administration confirme les r\u00e9sultats 2007 concernant les r\u00e9serves prouv\u00e9es de gaz et de p\u00e9trole sur le territoire am\u00e9ricain. 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