1. Key
Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, PR China
2. State
Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), #18, Fuxue Rd, Changping, Beijing 102249, PR China
3. Energy
and Mineral Resources Group (EMR), Institute of Geology and Geochemistry
of Petroleum and Coal, RWTH Aachen University, Lochnerstr. 4-20, 52056 Aachen, Germany