CHK Oil Limited, an investment holding company, engages in the exploration, exploitation, development, production, and sale of oil and natural gas in Hong Kong, the United States, and the People Republic of China. The company holds an 100% exploitation interest in the Utah Gas and Oil Field project located in Uintah Basin of Utah, the United States. It also trades in oil and oil-related products; and provides corporate services.

The company was formerly known as Pearl Oriental Oil Limited and changed its name to CHK Oil Limited in February 2020. CHK Oil Limited is based in Tsim Sha Tsui, Hong Kong. CHK Oil Limited is a subsidiary of Xin Hua Petroleum (Hong Kong) Limited.