EOG Resources is one of the largest independent (non-integrated) oil and natural gas companies in the United States and is the operator of substantial proved reserves in the US, Canada and offshore Trinidad. The company also has smaller interests in the North Sea. As at 31 December 2003, EOG’s estimated net proved natural gas reserves were 4,645bn cubic feet and estimated net proved crude oil, condensate and natural gas liquids reserves were 95m barrels.