Royale Energy, Inc. engages in the production and sale of oil and natural gas in the United States. It is also involved in the acquisition of oil and gas lease interests and proved reserves; drilling of exploratory and development wells; and sales of fractional working interests in wells to be drilled. It owns proved and non-proved reserves of oil and gas in Mitchell County and Ector County, Texas; and the Sacramento Basin and San Joaquin Basin in California, as well as in Oklahoma and Alaska. Royale Energy, Inc. was founded in 1983 and is based in El Cajon, California.