1.
A NEW METHOD OF SOLVING BUILD-UP HOLE ANGLE PROBLEM ON PENDULUM ASSEMBLY WHILE WOB IS INCREASING
解决钟摆钻具在大钻压下增斜问题的新思路
2.
This paper has introduced a set of test device to examine the loads on teeth of the bit at different rotary speed and under high bit-weight.
本文介绍了一套测试装置,用以测试钻头在大钻压下任意转速的牙齿受力。
3.
bit-pinching formations
钻压略重就扭矩增大转速减慢的地层
4.
Pump Pressure Analysis of the 3NB2200 High Efficiency Well Drilling Pump
3NB2200型大功率钻井泵的泵压分析研究
5.
Numerical simulation of injecting cement design parameters for the large diameter bored pile
大直径钻埋桩压浆设计参数数值仿真
6.
In drilling high angle deviated holes, friction is the main factor affecting the effective WOB.
在大斜度定向井钻井过程中，摩擦阻力是影响有效钻压的主要因素。
7.
easing the bit in
钻头轻压慢转钻进地层
8.
Research into Safe Drilling Technology in Formations Abnormal Pressure in Da'an Area
大安地区异常压力地层安全钻井技术研究
9.
Application study of in pile by base post grouting super-long and lame-diameter bored piles
桩端后压浆在超长大钻孔灌注桩中的应用研究
10.
Post-grouting Technology of Bored Piles in Tianjin Nilon Mansion
天津奈伦国贸大厦钻孔灌注桩后压浆施工技术
11.
Experiment Study in High Gas Heavy Section Colligate Driving Drift Hydraulic Pressure Rockbolt Drill Vehicle
高瓦斯大断面综掘巷道液压锚杆钻车试验研究
12.
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。
13.
Application of Composite Pressured Post grouting Bored Pile Foundation
钻孔灌注桩后压力注浆复合桩基础在银河大厦工程中的应用
14.
The bearing capacity characteristic value of a single pile can be increased greatly through post pressure grouting from pile sides and bottom.
通过对桩侧和桩底后压浆，可大幅度提高钻孔灌注桩单桩承载力。
15.
Petrology of Ultra-high Pressure Metamorphic Rocks in the Main Hole (2000-3000m) of the Chinese Continental Scientific Drilling Project;
中国大陆科学钻探工程（CCSD）主孔2000-3000m超高压变质岩岩石学
16.
Testing Study on Mechanism and Effect of Post-grouting at the Bottom of Super Large Bored Piles Foundation;
超大型钻孔灌注桩基础桩底后压浆机理及效果的实测研究
17.
A Study of Dead Load Test on the Vertical Ultimate Carrying Capacity of Cast-in-situ Piles in Project
某工程大直径钻孔灌注桩单桩竖向抗压静载试验分析
18.
weight-responsive bottom-assembly
对钻压敏感的井底钻具组合