Thus, it provides theoretical foundations for a PDC bit design and property simulation.
这为PDC钻头优化设计和性能模拟提供了理论依据。
The bit is usually a drag bit fitted with either PDC or natural diamond cutting structures, but the core bit is unusual in that it has a hole in its center.
钻头通常属于刮刀型，装备有PDC或者天然金刚石切削齿，但取芯钻头的特别之处在于钻头中心有一孔。
The single tooth cutting course of a PDC drilling bit is studied. The research is of great significance for improving PDC drilling bit design.
为了改进PD C钻头设计，在全尺寸试验的基础上，对PD C钻头单齿切削过程进行了试验研究。
A kind of anti-whirl PDC bit designed based on the idea of flexible bit is introduced in this paper and the structure and working principle of it is expatiated.
回旋是导致PD C钻头早期失效的主要原因，介绍了一种基于挠性钻头的构想设计的抗回旋pdc钻头，阐述了其结构和抗回旋原理。
Mud logging is one of the most basic techniques of the oil exploration and development, but the application of PDC bit brings a lot of difficulties to mud logging work.
录井技术是油田勘探、开发中最基本的技术之一，但是PDC钻头的使用给传统的录井工作带来了极大的困难。
The paper introduces a fitting method between water jet and PDC bit tool, that is, aid bit tool cut rock while water jet is directed from suitable location of bottom of bit tool.
介绍了一种射流与PDC刀具的配合方式，即水射流位于刀具底部适当位置辅助刀具切割破碎岩石。
It is based on a database of past PDC bits. In the databased, it includes bit type, average shear stress of well which bit was used in, cost per unit length.
该方法以一个建成的PD C钻头使用资料库为基础，该数据库包括钻头型号、所钻井段地层的平均剪切强度、单位进尺钻井成本等指标。
Based on the theoretical analysis, a new type of blade bit was invented. And this kind of bit combines the advantages of PDC bits and drag bits. And a series of field experiments were performed.
在理论分析的基础上，综合PD C钻头和刮刀钻头的优点，设计了一种新型的刮刀钻头，并进行了现场试验。
According to the optimization design, a new type of PDC bit was produced and got better result when it was used in the multi-interbedded formation.
根据该设计制造的一种新型复合式PDC钻头在多夹层地层中取得了较好的应用效果。
According to the optimization design, a new type of PDC bit was produced and got better result when it was used in the multi-interbedded formation.
根据该设计制造的一种新型复合式PDC钻头在多夹层地层中取得了较好的应用效果。
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