There are three petroleum universities: Shengli College of China Youshi University, Shunhua College of Liaoning Petrochemical University and Huarui College of Daqing Petroleum University. Petroleum University refers to the specialized secondary and higher education institutions affiliated to the petroleum system during the industry management period. Extended information petroleum schools include those directly under the Ministry of Petroleum Industry, such as China Youshi University, Northeast Youshi University (formerly Daqing Petroleum Institute), Southwest Petroleum University (formerly Southwest Petroleum Institute), Yangtze University (formerly Jianghan Petroleum Institute), Xi Youshi University (formerly Xi Petroleum Institute), Changzhou University, Liaoning Petrochemical Institute (formerly Fushun Petroleum Institute), Chongqing Institute of Science and Technology (formerly Chongqing Petroleum Institute), Guangdong Petrochemical Institute and Chengde Petroleum Institute.