1. College of Geosciences, China University of Petroleum, Beijing 102249, China
2. Xinjiang Oilfield Company Research Institute of Exploration & Exploitation, Karamay, Xinjiang 834000, China
3. CNOOC China Limited, Shenzhen Branch, Shenzhen, Guangdong 518064, China
4. CNOOC Research Institute Co., Ltd., Beijing 100028, China