A PDC bit with new type tooth is introduced. Comparing with ordinary one, it turns low efficiency into very high and provides long service life in driliing in hard and compact mudstone.
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李雨 蔡家品 贾美玲 张建元 赵尔信.硬致密泥岩钻进的新型复合片钻头的研究与应用[J].钻探工程,2006,33(9):60-61,54.LI Yu, CAI Jia-pin, JIA Mei- ling, et al. Research and Application on New PDC Bit Drilling in Hard and Compact Mudstone[J]. Drilling Engineering, 2006,33(9):60-61,54.