1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, P. R. China
2. Unconventional Oil and Gas Science and Technology Research Institute, China University of Petroleum, Beijing 102249, P. R. China
3. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, P. R. China
4. Development and Research Center, China Geological Survey, Beijing 100037, P. R. China
5. College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, P. R. China