Peak Oil has been around a long time and has been consistently in error for a number of reasons, some known and some unknown.
First the unknown: Peak Oil assumes a biogenic origin of hydrocarbons. Here is a link that questions that assumption:
http://www.sciencemag.org/content/319/5863/604.figures-only
and another link to a more accessible article on the subject:
http://www.nature.com/news/2008/080131/full/news.2008.542.html .
The Russians embraced Thomas Gold's theory of abiotic origins of oil early on and began drilling very deep oil wells greatly increasing reserves and production. It seems possible that there is more than one way that Nature produces hydrocarbons and we are mistaken to look for a single answer.
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| Data Source: EIA - US Energy Information Administration |
Peak Oil, also assumes a zero sum game in terms of known reserves and values reserves based on current production methods. As a result, not so long ago, the Peak Oil theory failed to assign value to shale oils known to reside in formations like the Barnett Shale, the Eagle Ford and Marcellus shales . The application of directional drilling combined with hydraulic fracking promises to reduce domestic imports by a third within 5-10 years with production in these very formations, considered worthless just a few years ago.