righthand string

用法例句

ANSYS-based finite element analysis method of longitudinal vibration of drilling string and its application;

基于ANSYS的钻柱纵向振动有限元分析及应用

Rules and their application of drilling string lateral vibration;

钻柱横向振动规律及应用

Optimization design methods of drilling strings in extended reach wells;

大位移井钻柱优化设计方法及应用

Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling

气体钻井钻柱动力学特性及钻柱失效机理研究

ANALYSING DYNAMIC CHARACTERISTICS OF DRILLING STRING EDDY OF INSIDE CONTAINING DRILL FLUID

内含钻井液的钻柱涡动动力特性分析

The rotary carriage provides rotary and vertical motion to the drill string and bit.

转动滑架为钻柱和钻头提供转动和垂直移动。

Acoustic Transmission and Measurement Method for Near-bit Dynamic Force Signal of Bottom Drill String

底部钻柱近钻头动态力测量及声传输方法

Analysis of Frictional Effect on the Drill Stem Stability in Horizontal Wells

考虑摩擦时水平井钻柱的稳定性分析

AUTOMATIC METHOD OF DST ANALSIS

非自喷井钻柱测试解释的自动拟合法

Solve the Nonlinear Contacted Problem between Drillstring and Hole Wall by the Optimization Method;

最优化理论求解钻柱接触非线性问题

Effects of Drillstring Length on Snake Buckling Loads

斜直井内钻柱长度对蛇形屈曲的影响

Development of Drill String Vibration Logging

钻柱振动录井的研究现状及发展趋势

the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press.

钻机的切割部分；通常是尖头的有螺旋状图案并且可以更换，用在钻柱钻柄或钻床上。

Study on Nonlinear Dynamics Action of Integrated Bit-Rock-Drillstring-Well System;

钻头—岩石—钻柱—井壁互作用下系统耦合非线性动力学研究

A Research on the Logging While Drilling Acoustic Data Transmission Based on Periodic Drill String System

基于周期性钻柱系统的随钻数据声波传输方法研究

Simulation the Acoustic Characteristic of Periodic Drill String of Logging while Drilling

随钻测井周期性钻柱结构声传播特性的数值仿真

counterbore with guide

有导柱的平底扩充孔钻

bottom supporting drilling platform

定柱沉垫式钻井平台

new series vertical drilling machines with square colum

新系列方柱立式钻床

cone type roller bearing rock bit

滚柱轴承锥形牙轮钻头

DISCUSSION OF TECHNOLOGY FOR DISPLAYING THE BORE STRATA HISTOGRAM IN-PHASE WITH DRILL

钻进时同步显示钻孔地层柱状图技术探讨