As a result it is necessary to design new type of one-cone bit according to the quality of the rock.
因此应针对不同性质的岩石设计符合其破岩特点的单牙轮钻头。
The dynamic model reveals the dynamic action of string, it is instructive to design new rock bit and study drilling mechanics.
通过研究得出了一套研究钻柱系统动力学模型及求解方法，对新形钻柱的设计和钻井力学的研究具有指导意义。
Analysis of the side-wall pattern shows that the side-cutting process of the roller bit is related to not only the teeth surface design but also the rock property and the drilling parameters.
井壁模式分析说明，牙轮钻头的侧向切削过程不仅与齿面结构有关，而且与岩石性质、钻井参数有关。
They supply plentiful useful information for the design and function of the integral PDC drill bit, while stating the principle of destroying the rock of the integral PDC drill bit.
对复合钻头的几何设计和性能设计提供了丰富的、有用的信息，同时叙述了组合钻头的破岩原理。
Analysis of the side-wall pattern shows that the side-cutting process of the roller bit is related to not only the teeth surface design but also the rock property and the...
井壁模式分析说明，牙轮钻头的侧向切削过程不仅与齿面结构有关，而且与岩石性质、钻井参数有关。
Analysis of the side-wall pattern shows that the side-cutting process of the roller bit is related to not only the teeth surface design but also the rock property and the...
井壁模式分析说明，牙轮钻头的侧向切削过程不仅与齿面结构有关，而且与岩石性质、钻井参数有关。
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