A Research on Technology for Increasing Rate of Penetration in Daqing Xushen Natural Gas Field;
大庆徐深气田提高钻速技术研究
The rate of penetration of PDC bits relates closely to its self-sharpening property.
复合片钻头的钻速与其切削齿的自锐性密切相关,钻头台架试验反映了这种内在联系,并用平均钻速((?))和平均钻速变化率((?))等指标对复合片自锐性能进行描述与评价。
The analyses of the relationship between drilling parameter and rate of penetration was done,and the principle of coupled driven drilling by improving rotary speed of bit was revealed to increase bit rock-breaking energy to improve penetration rate.
分析了钻井参数与钻速的关系,揭示了复合钻井通过提高钻头转速,从而增加钻头破岩能量来提高机械钻速的机理;在分析井斜原因和钟摆钻具防斜打直原理的基础上,分析了直螺杆钻具和弯外壳螺杆钻具组合的防斜机理以及两者的联系与区别,指出在地层倾角较小时采用直螺杆钻具组合,地层倾角较大时采用弯外壳螺杆钻具组合,以达到防斜打快的目的。
Application of pump-controlled servomotor on verification devices of weight indication gauges for oil well drilling
泵控伺服技术在钻井指重表检定装置中的应用
This forecast model shows that there exists exponential relation between the drilling cost and the footage and the cycle respectively.
该预测模型表明钻井成本与钻井进尺和钻井周期呈指数关系。
surface hole drilling
钻下表层套管的井眼
The Multi-functions of Micro-bubble Drilling Fluid for Core Drilling
微泡钻井液在岩芯钻探中的多重功效
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
Its wide prospects on drill, well repair have been presented.
指明了它在钻井、井业方面的广阔应用前景。
A tall framework over a drilled hole, especially an oil well, used to support boring equipment or hoist and lower lengths of pipe.
钻架竖在钻井（尤指油井）之上的支架，用来支撑钻孔设备或提升和下放钻管
On the application of raise-boring machine in small shaft construction assisted by grouting in top-soil
反井钻机表土层小井灌浆施工技术的研究
Structure analysis and design optimization of drilling shaft lining bottom in super-deep alluvium
特厚表土层钻井井壁底结构分析与设计优化
Barite for drilling fluids
GB/T5005-1994钻井液用重晶石粉
EVALUATION STUDY ON CORE OIL & GAS DRILLING TECHNOLOGIES;
油气钻井科技发展重点内容评估研究
(of a mine or oil well) drilled speculatively in an area not known to be productive.
（指矿井或者油井）在不知道是否能产的地方盲目的钻井。
Research of Multiparameter Drilling Instrument Based on the Single Chip Computer System;
基于单片机的钻井多参数仪表的研究
An oil platform.
钻井平台石油钻井平台
drilling practice
钻井实践；钻井习用方法；钻井作业；钻井参数
Drilling, Logging, Mud-logging Managers
钻井、测井、录井处长（经理）
Mechanics Model of Rotation Axis in Directive Rotary Steerable Drilling System
指向式旋转导向钻井系统旋转轴力学模型
Approaching of Dynamic Point-the-bit Rotary Steering Drilling Tool
动态指向式旋转导向钻井工具设计探讨