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Peak oil - Feb 18
by Staff
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What happens when “drill baby drill” meets peak oil prognostication? An audience found out firsthand this week, when two power policy pugilists faced off at the University of Wisconsin. In one corner was Texas’ own Dr. Tad Patzek, incoming president of the Association of the Study of Peak Oil, and Chair of UT’s Department of Petroleum & Geosystems Engineering. In the other corner, former CEO of Shell Oil Company and domestic drilling proponent John Hofmeister. Highlights include Hoffmeister’s prediction that gasoline is likely to reach $5 a gallon this summer, and that America’s energy crunch will lead to new lows in political partisanship. “We will look at the campaign of 2012 as lightweight stuff when we get to the campaign of 2016,” he said in his introductory remarks. Hoffmeister advocates expanded domestic drilling in the U.S. to ensure American growth and security. “We live in a nation that has more oil than it will ever use,” he said, but without an aggressive drilling policy, he predicts US drivers will be waiting in line for gas by 2015. Patzek agreed that gas prices are bound to rise, but he said they would go up even if all of the world’s non-traditional energy is developed. In fact, the higher cost of deep-water drilling, tar-sands refining, and shale oil extraction dictates that prices will rise, he said. Dr. Tad Patzek is the Chair of UT’s Department of Petroleum & Geosystems Engineering . “If I think about the United States,” Patzek said, “I think about a grown up baby who is now very large, and on a cold night wants to cover herself with a baby blanky. And no matter what she tries there’s always a part of her body uncovered and exposed to the cold weather. That’s where we are.” Patzek’s solution is the same one he advocated in a recent interview with StateImpact Texas: the U.S. needs to “de-power.” That’s to say, Americans should begin using less power in their day-to-day lives to avoid an energy crisis as developing nations begin to use more of the global energy supply.
Yet the recent shale-oil boom in North Dakota has some analysts brushing off this gloomy perspective. A new research note (pdf) from Citigroup argues that the recent surge in North American production has “buried” the peak-oil hypothesis. New drilling technology has allowed companies to extract oil from once-inaccessible shale rock, which has, in turn, allowed the U.S. to slash its oil imports dramatically. What’s more, there are tantalizing shale deposits all around the world — in Argentina, Australia, and even France. So does that mean that, as the Citigroup analysts say, the peak-oil hypothesis is “dead”? Well, not so fast.
Highlights A recent publication in Energy Economics by Douglas Reynolds and Jungho Baek has analyzed the use of Hotelling and Hubbert theories as determinants for oil price. Their conclusing is that scarcity rent has little importance, while the Hubbert curve is a major determinant for oil prices.
Se denomina Tasa de Retorno Energético (TRE) o Energy Return on Investment (EROI, o también EROEI) al cociente entre la energía obtenida y la utilizada para obtenerla. Este concepto surge de forma muy vinculada a la biología. El origen de la idea puede rastrearse en trabajos de distintos autores, como el ecólogo estadounidense Howard Odum. Pero es un antiguo alumno de este pionero en ecología de sistemas, Charles A. S. Hall, el que se atribuye ser el primero(1) en emplear este planteamiento en 1970, en su tesis doctoral sobre la energía utilizada por peces en sus migraciones. Igual que un ser vivo no debe quemar más calorías para alimentarse de las que va a obtener de la comida, Hall indaga en lo que ocurre cuando se aplica este cálculo en la explotación del petróleo o en otras energías en nuestra sociedad. “Tú mismo eres todo energía, como lo son los ecosistemas españoles”, explica Hall, hoy profesor en el College of Environmental Science and Forestry de la Universidad Estatal de Nueva York. “Hice muchas mediciones de flujos de energía en la naturaleza y los sigo haciendo; los principios son fácilmente trasladables a las sociedades humanas si estás formado como científico de sistemas: todo está en las reservas, los flujos y los controles”. Hace un siglo, los yacimientos de petróleo de EEUU eran mucho más accesibles que hoy en día.
Industrie & Technologies : Qu’est-ce que les hydrates de méthane ? Roland Vially : L’activité biologique des sols produit en permanence du méthane par décomposition de matières organiques. Dans des conditions de hautes pressions et de très basses températures, ce méthane peut se retrouver piégé sous forme solide dans une cage de glace. Ce sont les hydrates de méthane. Sur Terre, deux types de régions réunissent ces conditions : les couches sédimentaires situées sous les pergélisols arctiques, et les fonds marins constituant l’ultra deep offshore, à partir de 500 mètres de profondeur. ... I&T : Si l’on parvient à exploiter les hydrates, l’épuisement des ressources fossiles, dont on parle tant, n’est donc pas pour demain ? R.V. : Il faut différencier pétrole et gaz. Alors que l’on parle à raison du fameux peak oil qui marque le lent déclin des ressources pétrolières, en matière de gaz, on continue chaque année à découvrir des gisements. Aller chercher une ressource non conventionnelle comme les hydrates de méthane semble donc, pour le moment, très prospectif. Mais en matière de politique énergétique, d’autres facteurs entrent en jeu, à commencer par l’indépendance énergétique. Il y a dix ans, nul n’aurait envisagé une exploitation massive des gaz de schiste, jugée complexe. Les exemples américain, ou plus près de nous, polonais, montrent à quel point la donne peut changer. I&T : Après les gaz de schiste, les hydrates de méthane seraient donc le prochain eldorado des énergies fossiles ? R.V. : Il est toujours délicat de prédire l’avenir. Ils pourraient bien devenir une source d’approvisionnement, mais pas avant l'horizon 2020 à 2030. |
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