Presently common means of PDC bit placing cutting is to draw and adjust the scheme.
目前常用的PD C钻头布齿设计方法是图解调整法。
The realizing of parametric design of screw thread of PDC bit makes CAE/CAM possible.
实现了PDC钻头螺纹部分的参数化设计，为进一步的CAE/CAM打下了坚实的基础。
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。
PDC bit has long service life, which can improve drilling efficiency with obvious economical benefit.
实践证明，PD C钻头使用寿命长，在提高钻进效率的同时经济效益显著。
It is the key to ensure that PDC bit has choiceness of the work performance to reasonably place cutting.
合理的布齿是保证PD C钻头有优良工作性能的关键。
PDC bit mechanics analysis is the foundation of the working performance prediction and analysis of the bit.
PD C钻头的力学分析是钻头工作性能预测分析的基础。
PDC cutter size, back rake and density are very important design parameters affecting the performance of PDC bit.
PD C切削齿尺寸、后倾角和布齿密度是影响PD C钻头性能的重要设计参数。
Through field testing, the PDC bit suited for Sulige gas field increased drilling speed and obtained good result.
通过现场试验，大幅度提高了苏里格气田的钻井速度，取得了显著的效果。
Therefore, it is necessary to analyse and predict the strength state under the complicated moving condition of PDC bit.
因此，有必要对钻头在复杂工作条件下的受力进行分析、预测。
Maceration alloy is an important material in the coldpressed maceration, pressureless maceration and PDC bit manufacture.
浸渍合金是冷压浸渍、无压浸渍和PDC钻头制造中的重要材料。
This paper describes the surface test and field application of using explosive method to dispose PDC bit fishing accident.
介绍了大庆油田利用爆炸破碎后打捞的方法，处理PDC钻头落井事故的地面试验及现场施工情况。
The indoor results which is significant for the optimizing design of PDC bit has been proved reliable in the field drilling.
并通过野外现场钻进证实了室内研究结果的可靠性。 研究结果对于指导PDC钻头优化设计有着重要意义。
Developed study on the numerical bit, well bottom and the borehole face modeling method for PDC bit numerical experiment system.
开展了PD C钻头数值实验系统中数值钻头、数值井底以及数值井壁的建模方法研究。
The design of bit profile is an important part of PDC bit design, and it is always made by designers on the basis of their experience.
冠部设计是PDC钻头总体设计的一个重要组成部分，过去一直是凭经验设计，缺乏理论依据，随意性较大。
The level of drilling technique unceasing improvement and PDC bit extensive use brought new problems for on-site mud logging operation.
钻井技术水平的不断提高和PD C钻头的广泛使用给现场录井作业带来了新问题。
This paper also discusses bit parameter design to improve the economy of PDC bits, such as negative rake Angle and side rotation Angle.
本文还介绍了为提高复合片钻头经济指标的钻头参数设计问题，如负前角，侧旋角等。
Bit selection, mainly focused on PDC bit for the front-hill formation was presented, taking reference of the bit using in the offset well.
借鉴邻井钻头使用情况，以推广高效PD C钻头为主，介绍了山前构造钻头选型情况。
In order to increase drilling efficiency and reduce cost during drilling operations, it is necessary to do some research on PDC bit selection.
在钻井施工过程中，为了提高钻进效率，降低成本，对PD C钻头进行选型研究是必要的。
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。
PDC bit have advantages of high penetrate rate, long bit life which saving tripping times so that the application of PDC bit can improve drilling efficiency.
PD C钻头具有钻进时间长、机械钻速高、起下钻次数少等特点，使用PD C钻头可大大提高钻井速度。
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。
The prediction of formation anti-drilling properties and the personalized design of PDC bit is an very important research area in the modern drilling project.
地层岩石的抗钻特性预测和钻头的个性化设计是现代钻井工程中非常重要的研究领域。
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。
This paper narrates the principle and the way of the design for PDC bit placing by CAD, and introduces the contents and the elements of the Computer aided design.
本文在讨论PD C钻头布齿设计特点的基础上，叙述利用CAD进行PD C钻头布齿设计的原理和方法，介绍PD C钻头布齿计算机辅助设计软件的内容和编制原理。
The results of the research have the important reference and guidance effect to design the hydraulic structure of the PDC bit that using in drilling horizontal well.
该研究成果对水平井PDC钻头的水力结构设计有着重要的借鉴和指导意义。
The results of the research have the important reference and guidance effect to design the hydraulic structure of the PDC bit that using in drilling horizontal well.
该研究成果对水平井PDC钻头的水力结构设计有着重要的借鉴和指导意义。
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