The top 100 largest oil and natural gas field locations are plotted using latitude-longitude of the approximate center of the field. Dot diameter is relative to its 2013 proved reserves. The top 100 oil fields in the United States accounted for 20.6 billion barrels of crude oil and lease condensate proved reserves, or 56% of the U.S. total in 2013. The top 100 natural gas fields accounted for 239.7 trillion cubic feet of natural gas proved reserves, 68% of the U.S. total. Proved reserves are defined as estimated quantities of oil and natural gas that analysis of geologic and engineering data demonstrates with reasonable certainty are recoverable under existing economic and operating conditions. Source: U.S. Energy Information Administration, based on Form EIA-23L and DrillingInfo Note: The top 100 largest oil and natural gas field locations are plotted […]