To indicate axial travel of the boring bar,the counting assembly is formed with two counting gears that mesh with two drive gears and a differential,and a special counter.
钻杆轴向进给由钻杆和丝杆相对转动产生,为实现钻杆进尺计数,设计的计数装置由2个与传动齿轮啮合的计数齿轮、一个圆锥齿轮差速器和一个专门设计的计数器组成。
It sets good records on drilling cycle, net drilling time and average ROP in the same kind of horizontal wells.
该井的完成 ,创同类型水平井钻井周期、纯钻时间、平均机械钻速的国内好成绩。
average angular velocity of main shaft of machinery
机械主轴的平均角速度
5.9 The penetration rate (ROP) has been 6.18 meters per hour.
机械钻速为6.18米/小时。
A Study on the Theory and Technology of Drilling Fluids to Increase ROP.
提高机械钻速的钻井液理论与技术研究
Research on the Drill Pipe Transportation Manipulator of Horizontal Directional Driller and the Control System
水平定向钻机钻杆输送机械手及控制系统研究
coefficient of non-uniformity of operating velocity of machinery
机械运转速度不均匀系数
IMPROVING THE RATE WHILE DRILLING DEEP,OR ULTRA DEEP WELL IN THE COMPLEX GEOLOGICAL STRUCTURE OF EAST SICHUAN
提高川东复杂地质深井超深井机械钻速的研究
THE ROP ANALYSIS OF 12(1/4) IN. HOLE SECTION DRILLING WITH MUD IN LONGGANG DISTRICT
龙岗地区12(1/4)英寸泥浆钻进井段机械钻速分析
The Law of Conservation of Mechanical Energy and Its Application in Proportional Acceleration Field;
均匀加速场中的机械能守恒定律及其应用
Analysis of Geothermal Condition in the Xiangshan-region of Beijing and Investigation of Relation between Stratum and Penetration Rate;
北京香山地区地热条件分析及机械钻速与地层关系研究
engineering boring and drilling devices
工程钻探和掘进机械
The gas drilling technology is increasingly applied these days due to its high ROP, effective prevention of the cave-in of water-sensitive shales and the capability to eliminate lost circulations.
气体钻井由于其机械钻速快,能有效防止水敏性泥页岩坍塌,杜绝井漏。
MODEL OF A COMPLETE SET OF MACHINERY DURING RAPID CONSTRUCTION OF PARALLEL GUIDING ADIT AT EAST QINLING TUNNEL
东秦岭隧道平导快速施工机械设备配套模式
Development of Rapidly Recombination Mechanical Engineering Measurement & Control Experimental Platform;
快速可重组机械工程测控实验平台的研制
Design of a 3-DOF Translational High Speed Parallel Manipulator
一种三平动高速并联机械手设计方法研究
Speed Construction Technology in Rocky Level Gallery by Using Mechanized Operating Line with Trackless Rubber Wheel Vehicle
岩平巷无轨胶轮车机械化作业线快速施工技术
Rapid design platform based on CBR for mechanical products
基于实例推理的机械产品快速设计平台
mean avoiding speed
平均避碰速度平均规避速度