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2023, Vol. 26(1): 47-56    DOI:
 Reliability analysis of retractable drill bit with air reverse circulation used for drilling while casing
 WANG Minqi, YIN Qilei* , CHEN Baoyi, QI Bo, BO Kun and CAO Pinlu
 College of Construction Engineering, Jilin University, Changchun 130026, China
Received null  Revised null
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sponsored by:International Center for Geoscience Research and Education in Northeast Asia, Jilin University
ISSN 1673-9736
CN 22-1371/P
Address:No.938 Ximinzhu Street, Changchun 130026,China
TEL: 0431-88502587
E-mail: sjdz@jlu.edu.cn
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