1. College of Energy Resources; Chengdu University of Technology; Chengdu, 610059 China
2. Research Institute of Exploration and Development; Zhongyuan Oilfield, SINOPEC; Puyang Henan 457001 China
3. State Key Laboratory of Petroleum Resource and Prospecting; China University of Petroleum; Beijing, 102249 China
4. Research Center for Basin and Reservoir; China University of Petroleum; Beijing 102249 China
5. Institute of Mineral Resource Research; China Metallurgical Geology Bureau; Beijing 100025 China