Yingrui Bai, professor, doctoral supervisor, his main research interests are in the theory and technology of drilling fluid leakage prevention and plugging, and the theory and technology of deep liquid flow steering, etc. He has presided over 5 national and provincial vertical projects, 4 departmental and bureau funds, and 8 horizontal projects. He has presided over 5 vertical projects at national and provincial levels, 4 funds at departmental and bureau levels, and 8 horizontal projects; he has published more than 40 papers as the first and corresponding authors, of which 25 are SCI retrieved papers; he has been authorized 27 national invention patents as the first inventor, and he has won 5 scientific and technological awards at provincial and ministerial levels.