根据目前所采用的几种钻探方法的比较，钻粒钻进所以比其他钻进方法较复杂的原因是：钻粒钻进的技术规范较难控制，变化大，其中任一种条件变更，都会使钻进效率受到很大影响。因此，近年来对如何寻求出钻粒钻进的合理技术规范问题，已成为钻探工作者的一项重要任务。 According to the comparison of several drilling methods currently used, the reason why drilling and drilling tools are more complex than other drilling methods is that the technical specifications of drilling and drilling drilling are more difficult to control and change, and any one of these conditions will change. Drilling efficiency is greatly affected. Therefore, in recent years, it has become an important task for drilling workers to find out how to seek out reasonable technical specifications for drilling and drilling.