牙轮钻头

井底轨迹图CAD在牙轮钻头布齿设计中的应用

Application of the Bottom Hole Path CAD to the Rock Bit Insert Arrangement Design

仿真技术在牙轮钻头浮动套轴承设计中的应用

Application of computer simulating technology in rock bit floating-ring journal bearings

CAD在牙轮钻头设计中的应用

The Application of CAD in the Design of Cone Bit

地勘牙轮钻头专用CAD系统

CAD System Specifically for Geological Drilling Cone Bit Design

基于MATLAB的三牙轮钻头仿真模型研究

Research on simulation model of tri-cone bits by using MATLAB

基于AutoCAD的三牙轮钻头CAD系统设计

CAD System Design for Three-cone Bit Based on AutoCAD

用Excel实现三牙轮钻头直径计算的方法

Method of Calculating Three Cone Bit Diameter by Using Excel

基于Pro／E的牙轮钻头牙齿参数化造型设计

The parameterized solid modeling of the teeth of the roller bit based on Pro / E

PDC钻头与牙轮钻头相比，有许多优点。

PDC bits have many advantages in comparison with rock bits .

三牙轮钻头牙掌生产用FMS数控程序设计及质量控制

NC Programming and Quality Control in FMS for Producing Heads of Tri-cone Bits

介绍了以AUTOCAD为开发平台的地勘牙轮钻头专用CAD软件系统的开发及其应用。

The development and use of CAD system specifically for the geological drilling cone bit design with Auto CAD as its development platform is described .

以基本额定动载荷Cr作为初期优化的目标函数，选取4个设计变量，分别采用复合形法、内点罚函数法和外点罚函数法对牙轮钻头圆柱滚子轴承进行了优化设计。

By taking the maximum normal dynamic load as the objective function , the rock bit roller bearing is optimized with four variables .

牙轮钻头金属密封环表面喷涂WC-Co涂层耐磨性研究

Wear-resistant Properties of Plasma Sprayed WC-Co Coating On the Roller Bit Metal Seal Ring Surface

研究表明，基于牙轮钻头钻进特点的油矿地层可钻性分级.同样适用于PDC钻头钻井。

The result showed that the formation drillability classification for the roller cone bit was also suitable for the PDC bit .

随着钻探新技术的发展，开发深井和超深井技术要求钻头尺寸小型化，由于单牙轮钻头具有三牙轮钻头和PDC钻头的优点，同时又弥补了二者的不足。

With the development of the new technology of drilling , the exploitation of deep well and over-deep well needs small size bit .

第3次在4200.26～4305.45m，进尺105.19m，机械钻速0.74m／h，钻速比牙轮钻头提高60.87%。

The third was in interval 4200 . 26 ~ 4305 . 45m with a footage of 105 . 9m and a ROP of 0 . 74m / h , 60 . 87 % higher than that of roller bit .

研究了微PDC钻头可钻性指数和微牙轮钻头可钻性指数（UDT）的关系。

The relationship of drillability indexes for micro PDC bit and those for micro roller cone bit was analyzed .

以提高牙轮钻头滑动轴承寿命为目的，对复合钙基脂的流变性能进行了实验测试，结果表明复合钙基脂在高温时的流变性能符合Bingham塑性流变模式；

An experiment shows that the rheologic behavior of composite calcium-base grease under high temperature accords with the Bingham 's plastic rheologic pattern .

以ANSYS为平台，利用有限元方法对矿用牙轮钻头牙轮齿孔过盈配合进行了有限元计算，并分析了牙齿和齿孔应力分布规律及过盈量对其的影响。

The over-fixation of mine-used rotary drill bit tooth hole was calculated by the finite element method on ANSYS , also analyzed the distribution laws of tooth hole and tooth stress field and influence of the over-fixation .

试验从井深2391.4m开始，钻至井深2937.8m.纯钻时间69.18h.平均机械钻速7.90m／h，与牙轮钻头对比，可提高钻速116%。

The test started from depth 2 391 . 4m and ended at 2 937 . 8m with drilling time of 69 . 18h and an average ROP of 7 . 90m / h , 116 % higher than that of roller bit .

运用扫描电子探针对三牙轮钻头牙掌堆焊和热处理后产生的裂纹特征进行了分析，并采用X射线衍射仪测定了牙掌试件的残余应力。

The characterization of the crack in palm of the roller bit produced by overlaying welding and heat treatment was studied with the scanning electron microscope ( SEM ) and its residual stress was tested with X ray diffraction ( XRD ) .

应用ANSYS的参数化设计语言APDL，研究了牙轮钻头滑动轴承表面渗碳层和镶嵌的铜合金对轴承强度的影响。

This article applies ANSYS Parametric Design Language ( APDL ) to study the influence of carburized layer and copper alloy strips on strength of Slide Bearing for Roller Bit ( SBFRB ) .

本文介绍了PDC数据采集（/控制站）的软件原理和编程方法及在单牙轮钻头实验中的应用。

This paper introduces the software principle and the program compiling method for data acquisition with PDC ( precisidata acquisition and control system ), and its application in the single cone bit test .

以矿用牙轮钻头新的运动学分析方法和动力学模型为基础，计算出了与实际接近的牙轮钻头冲击破碎碰撞力，并以ANSYS为分析平台，对矿用牙轮钻头牙爪进行了有限元瞬态动力学分析。

On basis of new kinematic analysis method and dynamic model of mine-used rotary drill bit , the paper calculate impact force of rotary drill bit approach to factual case , and makes instantaneous dynamic analysis to jaw of bit on ANSYS platform .

阐述了采用内嵌于AutoCAD的VBA语言开发基于AutoCAD的三牙轮钻头计算机辅助设计系统的思想和实现，及在AutoCAD环境下开发三牙轮钻头CAD系统的一般方法。

The ideas and the process of the development of three-cone bit CAD system based on AutoCAD with AutoCAD embedded VBA language are represented . The common method of developing three-cone bit CAD system in the environment of AutoCAD is illustrated .

PDC钻头在砂泥岩地层机械钻速高、钻头工作寿命长、耐高温能力强于牙轮钻头，因此更适合定向井、水平井施工。

As PDC bit has higher penetration rate in the sand and shale formation , longer working life and higher temperature capability than the cone bit , it is more suitable for directional and horizontal well construction .

中转速、低压降、高扭矩减速涡轮钻具配合高效优质PDC钻头或高速长寿命ATM、MAX等系列牙轮钻头钻进，可大幅度提高大直径井眼的钻进速度。

The penetration rate of large hole drilling can be highly increased by the decelerating turbodrill with medium rotary speed , low pressure drop and large torque , combined with high quality and efficiency PDC bits or ATM and MAX roller bits .

从两方面分析表明，PDC钻头的技术性能具有牙轮钻头无法比拟的优越性，并具有机械钻速高、起下钻时间少、能够降低钻井成本等优点。

According to the technical and economic analysis results , it was indicated that the PDC bit is of these advantages as high penetration rate , short trip time and low drilling cost , etc. , with which the roller bit can not compare .

分析表明：影响PDC钻头钻进过程的关键因素是钻头与地层的匹配，钻井液密度已成为影响PDC钻头钻进效果的关键措施，这一点与牙轮钻头相反。

The result of analysis indicated that match between formation and bit is the key fac-tor affected PDC bit 's drilling and drilling fluid density is the key measures for the drilling result of PDC bit , which is just on contrary with roller bit .

度量牙轮钻头滑动轴承粘着磨损失效的新准则

A new criterion for failure of sliding bearings in roller bit