Which company built the first successful commercial oil well in the United States in 1859?

The Seneca Oil Company built the first successful commercial oil well in the United States in 1859.

The well was drilled near Titusville, Pennsylvania, under the direction of Edwin Drake, who was employed by Seneca Oil. Drilling began in 1859 and reached oil at a depth of about 69 feet, demonstrating that petroleum could be produced deliberately rather than collected from surface seepages.

The Drake Well did not create the modern oil industry by itself. Its success encouraged rapid drilling, refining, transportation, and investment in western Pennsylvania. Titusville became an early petroleum center, while nearby Oil Creek supplied many new wells.

A common mix-up is calling Drake the owner or sole inventor of the well. He supervised the operation, but the project was financed and organized by Seneca Oil. The well is generally remembered as the first commercially successful oil well in the United States, not necessarily the first place where people ever found or used petroleum.