Chelsea Oil and Gas Ltd. engages in the exploration, development, and production of oil and gas properties in Australia. It has working interests in approximately 5.2 million net acres of land in the Surat-Bowen, Georgina, and Simpson basins in onshore Australia, as well as holds overriding royalty interests in approximately 60,000 net acres in onshore and offshore basins in Australia. The company was formerly known as Australian-Canadian Oil Royalties Ltd. and changed its name to Chelsea Oil and Gas Ltd. in October 2013. Chelsea Oil and Gas Ltd. was founded in 1997 and is headquartered in Calgary, Canada.