Advances in polycrystalline diamond compact( PDC) bits have sharply increased rate of penetration( ROP),reduced drilling time and costs in oil and gas wells.

• 聚晶金刚石复合片（PDC）钻头的发展及应用，大大提高了钻井的机械钻速（ROP），减少了钻井时间，降低了钻井成本。