1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, SINOPEC Exploration and Production Research Institute, Beijing 102206, P. R. China
2. Research and Development Center for the Sustainable Development of Continental Sandstone Mature Oilfield by National Energy Administration, SINOPEC Exploration and Production Research Institute, Beijing 102206, P. R. China
3. Unconventional Petroleum Research Institute, China University of Petroleum, Beijing 102249, P. R. China