History of the petroleum industry in the United States
Oil and gas have been part of what is now the United States for a long time, but a modern petroleum industry really began in the 19th century. Native Americans and early settlers knew about natural oil and gas seeps in places like western Pennsylvania and New York, and some brine wells even produced small amounts of oil.
The first major breakthrough came with the 1859 discovery at Oil Creek, Pennsylvania. A drilling team led by George Bissell and Edwin Drake found oil that could be drilled and refined for useful products. This “drilling for oil” approach started a new era, attracting investors and leading to more wells in the Appalachian region and beyond. By the Civil War, oil production spread across western Pennsylvania, western New York, Ohio, Kentucky, and parts of Virginia.
New markets and products helped grow the industry. In the 19th century, crude oil was mostly turned into kerosene for lamps, replacing whale oil. California and New York–Pennsylvania areas began producing oil, and other states soon joined in. The first commercial oil wells in places like New York and Ohio turned oil into a big business, not just a byproduct of salt or brine operations.
People soon tapped oil in new regions. Kansas, Oklahoma, Arkansas, and parts of Texas became important, with early wells and later big fields that changed how and where oil was produced. The Gulf Coast area of Texas and Louisiana became especially important after the Spindletop discovery in 1901, which sparked a rush of drilling and the creation of large oil companies. Spindletop showed that giant fields could exist and turn nearby salt domes into rich oil sources.
California developed its own oil history as well. The Los Angeles basin grew from late 1800s fields to major production centers, including the Long Beach and Wilmington areas. Northern California’s Santa Barbara area also became a significant producer, including some of the first offshore oil work. The San Joaquin Valley became a leading oil region in the state.
Alaska added a later, dramatic chapter. Oil seeps were known for years, but the North Slope’s big fields were discovered in the 1960s, leading to the construction of the Trans-Alaska Pipeline and a long period of large-scale production.
Along the way, the industry faced regulation and prices. The government began controlling natural gas prices in the mid-20th century, and later extended price controls to all natural gas. These rules changed how gas was sold and encouraged new production in different places. Price controls were gradually reduced in the 1980s and 1990s.
A major technical advance reshaped the industry: hydraulic fracturing, or fracking. Beginning in the 1940s and expanding in the 1990s, fracking unlocked large amounts of oil and gas from shale, especially in the Bakken region of North Dakota and other shale plays. This helped the United States become a leading producer again.
Oil rig technology also evolved, with innovations in offshore drilling in the Gulf of Mexico starting in the mid-20th century. But the industry has faced environmental disasters that raised public concern and led to stronger rules. Notable events include the Lakeview Gusher in California (an enormous blowout in 1910), the Santa Barbara spill in 1969, the Exxon Valdez spill in 1989, and the Deepwater Horizon disaster in 2010.
The U.S. petroleum industry has continued to grow and change. The North Dakota Bakken boom (roughly 2006–2015) showed how new drilling techniques could revive production. The Keystone Pipeline, running from Canada to the United States, became famous as a symbol of opposition and support over climate and energy policy.
Today, the United States is one of the world’s largest oil producers, a status it regained in 2018 and has maintained through the early 2020s. The industry has shaped where people live, how energy is produced, and how the environment is protected, with ongoing innovation and debate about the best path forward.
This page was last edited on 2 February 2026, at 22:39 (CET).