Royale Energy Funds, Inc. operates as an independent oil and natural gas producer in the United States. The company primarily explores for, acquires, develops, and sells oil and natural gas. As of December 31, 2017, the company had proved developed reserves of 1,799 MMCF and total proved reserves of 2,132 MMCF of natural gas; and proved developed oil and natural gas liquid reserves of 0.2 MBBL and total proved oil and natural gas liquid reserves of 0.2 MBBL. It owns and leases wells located primarily in the Sacramento and San Joaquin basins in California, as well as in Utah, Texas, Oklahoma, and Louisiana. Royale Energy Funds, Inc. was founded in 1986 and is based in El Cajon, California.