1)rod bit钻杆钻头
英文短句/例句
1.Research on Technology of Fast Speed Drill Pipe Bit Based on Breaking Roadway Floor Ore-forming基于破碎巷道底板成孔的快速钻杆钻头技术研究
2.hard banding of tool joint钻杆接头表面加硬圈
3.hard facing of tool joint钻杆接头表面加硬层
4.shoulder dressing tool钻杆接头端面整形工具
5.Defects Analysis on 37CrMnMo4 Drill Pipe Joints37CrMnMo4钻杆接头缺陷分析
6.unit-type drill head组合钻床钻头, 标准钻头
7.Analysis on balling up caused by helicoid hydraulic motor bypass valve failure in combined drilling technology复合钻井过程中螺杆钻具旁通阀刺漏造成钻头泥包分析
8.According to the drillpipe structural characteristics, a dolly appropriate for drillpipe and Kelly detection is designed, of which its probe is adjustable.根据钻杆的结构特点,设计了探头距离可调的适用于圆钻杆和方钻杆的探测小车。
9.Threads on rotary shouldered connections for petroleum industryGB/T9253.1-1999石油钻杆接头螺纹
10.Petroleum equipment--Thread gages for rotary shouldered connectionsGB/T4749-1993石油钻杆接头螺纹量规
11.Longitudinal-cracking Failure Analysis of Boxφ139.7mm钻杆内螺纹接头纵向开裂失效分析
12.Cause Analyses of Pin Joint Fracture of 139.7 mm Heavy Weight Drill Pipe139.7mm加重钻杆外螺纹接头断裂原因分析
13.Failure Analysis on Tool Joint Expansion of φ88.9mm×9.35mm G105 Drill Pipeφ88.9mm×9.35mm G105钻杆内螺纹接头胀扣失效分析
14.Finite element analysis of the screw structure of the drill-stem junction钻杆接头螺纹结构形式的有限元分析
15.Its main functions are maintaining borehole gage,improving drill string stability and protecting lower drill string from excessive wear.其重要作用是保持钻头尺寸符合标准，提高钻杆稳定性，避免钻杆下部过于磨损。
16.part of a drill that grips the bit夹头（钻或钻床上用以夹住钻头的部分）.
17.a small bit that drills a first hole to guide a larger drill.钻凿初洞来导引大钻头的一种小钻头。
18.easing the bit in钻头轻压慢转钻进地层
相关短句/例句
drill rod joint钻杆接头
1.Wearing resistance of drill rod joint is an important study in drill machine manufacture for years.以钻杆接头常用材料40Cr为试验材料,对其经粉末固体渗硼后的耐磨性、耐蚀性进行了研究,结果表明,渗硼后其耐磨性提高7倍以上,耐蚀性也有明显提高。
2.The three fail form of scoring,fillister and corrosion for 127 mm(5″) S135 drill rod joint,corrosion rate and corrosion production have been researched by means of analysis of chemical composition and microstructure,testing of mechanical property.通过化学成分分析、力学性能测试、组织结构分析和高温高压模拟试验,对127 mm(5″)S135钻杆接头内壁出现划痕、凹槽和腐蚀三种失效形式,钻杆的腐蚀速率和腐蚀产物进行分析研究。
3)drill pipe joint钻杆接头
1.Reasons of wear-reistant zone dropout in spray-welding coating on drill pipe joint and its preventive measures;钻杆接头喷焊层耐磨带脱落原因及预防措施
2.There are geometric defects at the shoulder of drill pipe joint.针对钻杆接头反台肩处存在的外加厚过渡不全及几何缺陷 ,在静态纯弯曲条件下 ,用电阻应变片测试了所引起的应力集中系数 。
3.Based on the theory of contact non-linear finite element, the non-linear finite element analysis model of drill pipe joint screw was established, and the effect regular of external diameter of drill pipe joint on the its strength was researched by means of large general-purpose finite element analysis software .以接触非线性有限元理论为基础,建立了钻杆接头螺纹非线性有限元分析模型。
4)drill pipe tool joint钻杆接头
1.Study of the torsion strength and material toughness criteria of drill pipe tool joint;钻杆接头抗扭强度及材料韧性指标研究——系列专题之八
2.Due to the increasing number of deep wells and directional wells being drilled,longitudinal fracture occurred on the box-ended drill pipe tool joint is often reported.对钻杆接头材料进行SSC试验,发现如果将材料硬度限制在HB310以内,将明显减少钻杆内螺纹接头纵向应力腐蚀开裂失效。
5)tool joint钻杆接头
1.This paper discusses how to establish the methods and parameters of heat treatment of petroleum tool joint based on selecting material and elementary analysis,and how to improve the technology by analyzing the results of practice.以材料选择、化学成分分析为基础,确定钻杆接头的热处理工艺方法和工艺参数,并通过实践结果分析,改进工艺,满足技术条件要求。
2.Analyses of longitudinal cracks of tool joints were performed based on field background search, macro and micro crack morphology analysis and material testing of both cracked and not cracked tool joints.对某油田发生的钻杆接头纵向开裂事故进行了系统调查,对钻杆接头裂纹宏观形貌和微观形貌进行了分析,对开裂钻杆接头和未开裂的钻杆接头材质进行了对比。
3.Based on the planar beam theory, the models for calculating the maximum bending stress of drilling rod under axial tensile load, compressive load, and zero load are given, in consideration of the effects of tool joint, axial force, drilling rod weight, and attachment of drilling rod with the wall of wellbore on bending stress of drilling rod.在考虑了钻杆接头、轴向力、钻杆重量以及钻杆本体与井壁接触等因素的前提下 ,应用平面弹性梁理论建立了钻杆在轴向拉力、轴向压力和轴向力为零时钻杆的最大弯曲应力计算模型。
6)roof bolt bits锚杆钻头
延伸阅读
钻杆摩耗分子式：CAS号：性质：又称钻杆摩阻或钻杆摩耗。在钻杆或钻柱中发生的压力损失。
