1. State Key Laboratory of Petroleum Resources and Prospecting, College of Geosciences China University of Petroleum Beijing 102249 China
2. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, College of Resources and Environment Yangtze University Wuhan 430100 China
3. Exploration and Development Research Institute of Southwest Oil & Gas Field Company PetroChina Chengdu Sichuan 610041 China