A new type of diamond-impregnated PDC bit was developed according to the characteristics of medium hard rock formation. The cutting structure, and principle were introduced. The PDC cutting tooth and the diamond-impregnated rear support can strengthen the role of cutting action to improve the drilling efficiency and the bit stability in medium hard rock with long service life.
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马杰,隆威,杨洪武,等.中硬岩层钻进孕镶金刚石复合片钻头的研究与应用[J].钻探工程,2009,36(10):73-77.MA Jie, LONG Wei, YANG Hong-wu, et al. medium hard rock formation; diamond-impregnated; PDC; bit[J]. Drilling Engineering, 2009,36(10):73-77.