In 1814, saltwater well drillers struck oil in Olive Township in Noble County at a depth of 475 feet, making Ohio the first state to claim the discovery of oil from a drilled well. In 1860, Ohio's first commercial oil and gas well was put into production at Macksburg in Washington County. The deepest well ever drilled in Ohio was 11,442 feet. In 1990, Ohio's cumulative oil production surpassed the one billion barrel mark. That is the equivalent of 42 billion gallons.
Barrel is a volume measurement for oil.
One barrel equals 42 U.S. gallons. Most of Ohio's wells are stripper wells that produce an average of 1.2 bbl. MCF is a unit measurement for natural gas. One MCF equals 1,000 cubic feet of gas.