EOG Resources, Inc., together with its subsidiaries, engages in the exploration, development, production, and marketing of crude oil and natural gas. As of December 31, 2012, it had total estimated net proved reserves of 1,811 million barrels of oil equivalent of which 701 million barrels (MMBbl) were crude oil and condensate reserves, and 320 MMBbl were natural gas liquids reserves; and 4,740 billion cubic feet were natural gas reserves. The company operates primarily in the United States, Canada, the Republic of Trinidad and Tobago, the United Kingdom, the People's Republic of China, and the Argentine Republic. EOG Resources, Inc. was founded in 1985 and is headquartered in Houston, Texas.