rotary drilling

Technology for continuously controlling inclined well's deviation in the course of rotary drilling

斜井旋转钻进井斜连续控制技术

Analysis of thrust force of actuating mechanism on rotary steering drilling system

旋转导向钻井工具执行机构推靠力分析

Hydraulic system design and analysis for hydraulic rotary drilling rig

全液压旋挖钻机液压系统设计与分析

Test Study on drilling stem stability of rotary drilling in the slant hole

斜直井段旋转钻柱稳定性试验研究

Jamming often takes place during percussion rotary drilling.

用冲击回转式凿岩机凿岩时卡钎是经常发生的.

Research on the Bit Structure and Construction Technology of Rotary Drilling in Hard Rock and Gravel

旋挖钻进中硬岩及卵砾层钻头结构及施工工艺研究

On working Evaluation of rotary drilling lines

钻井钢丝绳工作能力的评定

XGR 18 type multi functional rotary drilling rig developed by basic company fill gaps in the province.

基础公司研制的XGR18型多功能旋挖钻机填补省内空白.

Application of Fully-cased Bored Piles by Rotary Drilling Rigs in Power Plants All-Electrostatic Camera Tube

旋挖式全护筒钻孔灌注桩在电厂建设中的应用

Living things throve in Devonian strata of the nappe, and their species were numerous. APPLICATION OF ROTARY PERCUSSION DRILLING TECHNOLOGY IN REVERSE THRUST NAPPE STRUCTURE FORMATION

旋冲钻井技术在逆掩推覆体地层的应用

Rotary closed-loop steerable drilling system spin control

旋转自动导向钻井技术旋转导向闭环钻井系统

The pneumatic percussion rotary drilling is mainly operated in the area where liquid is hardly or not permitted to be used as the circular medium.

气动冲击回转钻进主要应用于难用或忌用液体作为循环介质的地区。

Application of Intelligent Technology in Rotary Drilling Rig

智能技术在旋挖钻机中的应用

Inclination and Depth Monitoring System for Rotary Drilling Machines

GZX&12型旋挖钻机桅杆倾角及钻进深度监测系统

Mechanism of Efficient Rock Cracking and Its Engineering Application of Rotary Drilling Rig

旋挖钻机高效入岩机理及其工程应用

The research provides a firm foundation for promote the Rotary Drilling Rig's quality.

研究结果为进一步提高旋挖钻机质量奠定了基础.

The new development of percussion-rotary drilling technique

冲击旋转钻进技术新发展

Analysis of energy for rotary drilling in weathered granite formation

风化花岗岩地层旋转钻进中的能量分析

The results show that, by using the surveying system described in this paper, not only the tip angle, azimuth and control face angle can be measured, but also the influences of the inducing magnetism caused by the rotary drilling string can be demolished.

结果表明，不但能在钻柱旋转过程中测出近钻头处的井斜角、方位角及控制面角，而且可以消除钻柱磁感应对测量结果的影响。

Applications and developments of rotary drilling in Chinese open pit mines

牙轮穿孔在我国露天矿的应用与发展

The research of percussion and rotary drilling technique of geothermic well

地热井射流式冲击器冲击回转钻进的分流试验研究

Model Analysis on Electro-hydraulic Proportional Control for Rotary Drilling System of Engineering Geological Drilling Rig

钻头轻压慢转钻进地层工程地质钻机回转钻进比例控制系统的模拟分析

Application of Combination Construction Method with Rotary Drilling Rig and Rotary Table Rig

多面回转工作台式组合机床旋挖钻机与转盘钻机组合施工法的应用

The method is effective for reliability analysis of key components of rotary drilling rig.

该方法是进行旋挖钻机关键部件可靠性分析的高效方法。

Development Situation and Application Prospect of Rotary Drilling Rigs Home and Abroad

旋挖钻机国内外发展状况及应用前景

Discussion on rod string rotary drilling technology for pumping well

抽油机井抽油杆柱旋转工艺技术初探

Top drives have played a major role in improving rotary drilling efficiencies.

滑动钻进提速,提升了井底控制能力.

The application of the rotary drilling technique in China

牙轮穿孔技术在我国的应用

Development analysis of rotary drilling rig at home and abroad

国内外旋挖钻机发展分析

Pneumatic DTH ( Down-The-Hole ) hammer is one of main pneumatic percussive-rotary drilling equipments.

风动冲击器是气动冲击回转钻进的主要设备之一.