In this paper, we provide some new insights into stick/slip vibration in drilling with polycrystalline diamond compact (PDC) bits. Fifty-six field runs under various drilling conditions were collected with the help of on-bit vibration sensors. Stick/slip vibration occurrence during drilling was analyzed. Two types of stick/slip vibrations were identified: cutting-action-induced stick/slip and friction-induced stick/slip. Methods were developed to determine whether a stick/slip occurrence is induced by cutting action or by friction. Statistical analysis found that bit drilling efficiency (DE) is well correlated with the occurrence of cutting-action-induced bit stick/slip vibration. If a PDC bit is designed so that its DE is greater than a critical value, then the cutting-action-induced bit stick/slip vibration is not expected in drilling. Increasing the aggressiveness of the cutting structure of a PDC bit within a limited critical depth of cut is found to be helpful to mitigate bit stick/slip vibration.

在本文中，我们提供了有关使用多晶金刚石复合片（PDC）钻头进行钻进时的粘滞/滑移振动的一些新见解。在钻头振动传感器的帮助下，收集了在各种钻井条件下的五十六个野外作业。分析了钻孔过程中发生的粘/滑振动。确定了两种类型的粘滞/滑动振动：切削作用引起的粘滞/滑动和摩擦引起的粘滞/滑动。已开发出方法来确定是由于切削作用还是摩擦引起了粘滑现象。统计分析发现，钻头钻进效率（DE）与切削作用引起的钻头粘/滑振动的发生密切相关。如果将PDC钻头设计为使其DE大于临界值，那么在钻孔中就不会产生切削作用引起的钻头粘滑现象。