The Influence of the Change of Drill Bit Hydraulic Parameter on the Drilling Effect in CCSD Pre-Pilot Hole Drilling Project;
科学钻探预先导孔工程中钻头水力参数的变化对钻进效果的影响
It can bring convenience for drilling workers and improve drilling efficiency.
为避免退钻更换钻头的繁琐过程,设计一种新型扩孔钻头,能够随时快速安装拆卸,为工人打钻带来了方便,并提高了钻进效率。
In the evaluation of drilling efficiency in drilling engineering,the conventional drilling rate models were often used to analyze the effect of a single factor contribution on drilling efficiency.
在石油钻井工程中,评价钻进效率差别的方法是利用钻速方程来计算各单因素对钻速的影响,计算工作量大,缺乏综合性。
Starting from the four concepts of orbit energy, energy class,shielding effect and infixing effect, the author uses the two commonly applied methods of caculation orbit energy to analyse and compare 4s orbit energy and 3d orbit energy.
本文从轨道能、能级、屏蔽效应和钻穿效应这四个概念入手 ,运用计算轨道常见能量的两种方法进行分析和比较轨道能与 3d轨道
A Brief Explanation of Air Actuated DTH Hammer Drilling Efficiency
空气潜孔锤钻进是提高钻进效率的有效途径
Promote the efficiency of drilling equipments in tunneling and drilling rocks
提高钻探设备在岩石中掘进钻井的效率
Laser has been found very efficient in drilling small holes.
人们发现激光用于小孔钻眼效率很高。
This machine adopts two species of drillingtechnique of direct and reverse circulation, the efficiency enhances observably in the process of ovum, gravel and rock layer construction.
该机可采用正反循环两种钻进工艺，在卵、砾、岩层施工中，效率显著提高。
We test trip gas at every trip.
每次起下钻我们都要进行后效测量。
Probe on the Failure Analysis and the Design Optimization of Drill Pipe Structure
失效分析对钻杆结构设计优化的促进
Deviation Percent Model to Analyze Target Hitting of Actual Horizontal Wellbore Trajectories
水平井实钻轨迹中靶效果分析的偏差率模型
FEA of Efficiency in Rotary Ultrasonic Drilling of Engineering Ceramics;
工程陶瓷旋转超声钻削效率的有限元分析
Analysis on the Effect Factors of Drilling Work Efficiency and Cost in Geological Survey Project;
影响地调项目钻探施工效率与成本的因素分析
Study on Improving the Drilling Efficiency of the Hailar and Tamtsay Exploration Area
海拉尔—塔木察格探区提高钻井效率技术研究
Experiment on effect of cutter parameters of PDC bit on rate of penetration
布齿参数对PDC钻头破岩效率影响的试验
The efficiency study of traveling hydraulic drive about the down-the-hole drill
潜孔钻机履带行驶液压驱动系统效率研究
ROP increasing method based on the utilization efficiency of hydraulic power for the ultra-deep wells
基于水力能量利用效率的超深井钻井提速技术
Influencing factors to extraction efficiency of surface goaf hole
地面钻孔抽采采空区瓦斯效率影响因素
Discussion on the reason of influencing coalfield drilling efficiency and its countermeasure
浅谈影响煤田钻探效率的原因及其对策
deepwater drilling
深水钻进、深海钻进
Role of the Efficiency Unit
效率促进组的职责。
departmental efficiency enhancement initiative
促进部门效率的措施