Denbury Resources is a company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in Plano, Texas. The company extracts petroleum via enhanced oil recovery (tertiary recovery), which utilizes carbon dioxide to extract petroleum from fields that have been previously exploited. The company's operations are focused in the Gulf Coast and Rocky Mountain regions. As of December 31, 2018, Denbury had 262 million barrels of oil equivalent (1.60×109 GJ) of estimated proved reserves, of which 97% was petroleum and 3% was natural gas. The company also has an estimated 1.3 trillion cubic feet of probable carbon dioxide reserves at Jackson Dome. The company's largest producing property is the Cedar Creek Anticline in Montana and North Dakota, which accounted for 25% of daily production in 2018.