The US States That Produce the Most Oil A boom in oil production is profoundly changing the U.S. economy and impacting worldwide energy markets. As of 2015, 90% of U.S. oil production, excluding federal offshore drilling, comes from eight states: Texas, North Dakota, California, Alaska, New Mexico, Oklahoma, Colorado and Wyoming. The surge in U.S. output is due in large part to the wide use of horizontal hydraulic fracturing, or fracking, as new technologies give drillers access to some of the largest oil deposits in the world that were once too tight to exploit. Fracking is controversial as some believe the chemicals injected into the wells lead to extensive pollution of the water supply. Some also argue the unconventional horizontal drilling awakens dormant faults, causing earthquakes. With domestic crude oil production averaging 9.4 million barrels a day over the first six months of 2015, the United States bypassed Russia and Saudi Arabia as the world’s largest producer of crude oil
4 of the Biggest Oil Producers in Latin America Latin American oil production is dominated by Brazil, Mexico and Venezuela, countries that were responsible for about 75% of the region's total output in 2014. These countries are also giants on the international stage, ranking as the world's ninth, 10th and 12th biggest oil producers , respectively. Colombia also makes a good showing in the world rankings, coming in at 19th. The following list provides production figures for each of the region's top four oil producers in addition to a few details on each country's oil industry. 1. Brazil Brazil accounted for oil production of about 2.95 million barrels per day in 2014, continuing a nearly unbroken trend of increasing annual oil production since at least 1980. According to the U.S. Energy Information Administration (EIA), more than 90% of Brazil's oil production is extracted from deep-water oil fields offshore. In recent years, Brazil has made some of the world's b