1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, No. 31 Xueyuan Rd., Haidian District, Beijing 100083, PR China; Petroleum Exploration and Development Research Institute, China Petroleum & Chemical Corp. (SINOPEC), No. 31 Xueyuan Rd., Haidian District, Beijing 100083, PR China (corresponding author).
2. Director, State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, No. 31 Xueyuan Rd., Haidian District, Beijing 100083, PR China; Director, Petroleum Exploration and Development Research Institute, China Petroleum & Chemical Corp. (SINOPEC), No. 31 Xueyuan Rd., Haidian District, Beijing 100083, PR China.