Most conventional anti-deviation devices have inherent limitations, and their anti-deviation effects are greatly affected by drilling parameters such as bit weight and rotary speed.
FG型防斜工具的显著特点是其防斜效果受钻压、转速等钻井参数影响较小,钻头侧向力大小基本不随钻压改变,在旋转过程中钻头侧向力方向可以不断变化。
It is difficult to process signals of near bit weight on bit(WOB) and torque due to weak effective signal and strong noise.
针对井下近钻头钻压、扭矩测量中由于被检测信号微弱并伴有强噪声信号,造成信号处理困难的问题,利用锁相放大技术来处理微弱信号,以锁相放大器为核心,设计了井下近钻头钻压、扭矩测量中的微弱信号调理电路,在电路中通过采用平衡调制解调芯片AD630,把微弱的窄带信号从干扰噪声中分离出来。
Numerous investigations have been conducted aiming at the problems of the low penetration rate and easy deviation during drilling in deep and complicated formations, the high bit pressure during drilling large-diameter holes or horizontal wells, and the high drilling costs, etc.
针对目前深部、复杂地层钻速低和易产生井斜、大直径井眼和水平井施加钻压困难、钻井成本高等问题进行了大量的调研。
PERTURBATION STOCHASTIC FEM ANALYSIS FOR WEIGHT ON BIT ( WOB ) FLUCTUATION OF DRILL STRING;
钻压波动对轨迹影响的摄动随机有限元分析
The recursion formula for calculating WOB are established by means of the mechanical analysis.
通过力学分析，推导出计算钻压的迭代公式，即建立了计算井底钻压的力学模型。
Structure design of hydraulic thruster and computation model of weight on bit in micro-hole
微小井眼水力加压器结构设计及钻压计算
The results show that longitudinal vibration of drill string is relative to rotary speed and weight on bit(WOB).
实验结果表明,钻柱的纵向振动主要与转速和钻压有关。
According to the parameter selection problems of diamond drilling in hard rocks analysis is made from weight on bit, rotation speed and pumping quantity.
针对坚硬地层金刚石钻进参数的选择问题 ,从钻压、转速与泵量三方面作了分析 ,提出了合理选择钻进参数的方法 ,以保证正常生产施工的需要 ,提高钻探进尺效
weight-responsive bottom-assembly
对钻压敏感的井底钻具组合
Signal Processing of Near-Bit Weight on Bit and Torque
近钻头钻压、扭矩测量中微弱信号处理
diaphragm-type weight unit
膜片式钻压测量装置
Calculating Method and Effect on ROP of Ratio for WOB of RWD Tools
随钻扩眼工具钻压分配比的计算方法及对钻速的影响
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
Research on Bit Pressure Control System of Auto-drilling Based on BP Theory;
基于BP算法的自动送钻钻压优化控制技术研究
Research on Bit Pressure Control System of Auto-drilling Based on Fuzzy Theory;
基于模糊理论的自动送钻钻压控制系统的研究
bit-pinching formations
钻压略重就扭矩增大转速减慢的地层
easing the bit in
钻头轻压慢转钻进地层
Drilling Fluid Technology for MPD in Moderate and Deep Well in Binhai Oilfield.DFCF,
滨海油田中深层控压钻井钻井液技术
The Analysis of Principle for Drill Frame of MG100 Hydraulic Roof Bolter
MG100全液压锚杆钻机钻架工作原理分析
high pressure water jet drilling system
高压水射流钻井系统
tension-control cylinder
控制钻头给进的液压缸
Joy-Sullivan hydrodrill rig
乔伊－苏利文液压钻车
pressure balanced drilling bumpersub
压力平衡式钻井震击器
a drill powered by compressed air.
用压缩空气驱动的钻。
hydraulic gait-model all-auger drilling machine
液压步履式螺旋钻孔机
horizontal borehole pressure recorder
水平钻孔压力记录器