Because petroleum has been so instrumental in the development of modern societies and because it is also a finite resource that will some day go into decline, supply needs will fall short of demand at some point. The main focus of this blog is on the arguments put forth by the pessimists. I believe geopolitics will play an equal part in causing a supply shortage before an absolute geological peak, governments will limit their oil production levels

Leading Oil and Gas Companies Around the World

Who are the leading oil and gas companies around the world? Hint Exxon is 17th. The top 16 control over 70% of the world's estimated reserves and are national oil companies
Rank by 2006 Oil EquivalentReserves reported
http://www.petrostrategies.org/Links/Worlds_Largest_Oil_and_Gas_Companies_Sites.htm