1. College of Mathematics and Computer Science, Chifeng University, 1 Yingbin Road, Hongshan District, Chifeng 024000, China
2. The Unconventional Oil and Gas Institute, China University of Petroleum (Beijing), 18 Fuxue Road, Changping District, Beijing 102249, China
3. Fengdikeng Working Area, No. 5 Oil Production Plant of Petrochina Changqing Oilfield Company, 1189 Jinghuan South Road, Gaoling District, Xi’an 710064, China
4. Irap Branch, Greatwall Drilling Company (GWDC), CNPC, 101 Anli Road, Chaoyang District, Beijing 102249, China