Rock breaking efficiency of the self-propelled swirling jet bit
Bi Gang, Li Gensheng, Qu Zhan, Niu Jilei, Huang Zhongwei, Xi Zhongchen, Dou Liangbin
Acta Petrolei Sinica . 2016, (5): 680 -687 .  DOI: 10.7623/syxb201605012

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