The Bustuchin oil field is an oil field located in Bustuchin, Gorj County. It was discovered in 1967 and developed by Petrom. It began production in 1968 and produces oil and natural gas. As of 1995, the total proven reserves of the Bustuchin oil field were around 13 million barrels (1.8×106tonnes), and production was centered on 800 oilbbl/d. According to data provided by the Romanian Romanian Agency for Mineral Resources, the Bustuchin field produced 804.752e6 m3 of gas in 2022, making it the largest in Romania in terms of natural gas production.