The increased WOB is not good for deviation control.
当转速一定时，提高钻压不利于防斜打直。
The effect of WOB to pressure drop of small geometry PDM is bigger than to large geometry PDM.
小尺寸螺杆压降受钻压影响比大尺寸螺杆大；
The pressure drop increases as WOB bocomes bigger, the bigger the delivery of PDM, the larger the pressure drop.
计算表明：螺杆钻具压降随钻压的增加而增大；
Dry running WOB-L Piston pumps. Best performance characteristics for high pressures. Mainly used as a compressor.
空运行的WOB - L活塞泵，最好用于高压设备(主要是压缩机)。
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。
Application of downhole hydrodynamic propulsors solves the problem of exerting WOB, and are helpful to enhancing penetration rate.
井下液力推进器的应用在一定程度上解决了钻压的施加问题，有利于提高钻进速度。
For the ALI dogs, during PAV, different assist ratios had much influence on airway pressure and WOB , and less influence on hemodynamics.
在ALI犬中，不同的辅助比例对气道压力和呼吸功影响较大，对血流动力学影响较小。
Theoretical analysis and experimental results showed that, the depth of vertical. Cutting or cutting force with the increase in both WOB increases.
理论分析与实验结果的结论表明：静压切削或冲击切削的破岩深度、切削力随wob的增加均随之增加。
The effects of WOB fluctuation of drill string on the wellbore trajectory are analyzed by using stochastic finite element method and perturbation equation.
借助随机有限元方法和摄动方程初步分析了钻压波动对井眼轨迹的影响。
Design idea and development method of a microcomputer control system for optimization WOB (weight on bit) automation bit feed of oil rig disc brake is discussed.
阐述了盘式刹车钻压优化自动送钻微机控制系统的设计思想和研制方法，给出了系统的软硬件设计方法。
Drilling parameters typically include flow rate, pump pressure, standpipe pressure (SPP), pipe rotation (RPM), weight on bit (WOB), rate of penetration (ROP) and pit volume (PVT).
流量、泵压、钻压以及机械钻速等常用钻井参数还可用于监测井涌和泥浆漏失。
And the results indicate that the depth and volume are increased with the increasing of WOB and impact energy, and contrary to the special energy consumption of rock fragmentation.
结果表明：组合载荷破碎岩石的深度、体积随静压和冲击能增加而增加，破岩比能则随之下降。
The design contents of the software and hardware of the system were given. The system is not only used for optimization WOB automation bit feed of the disc brake but also constant WOB.
该系统不但可以适应盘式刹车钻压优化自动送钻的控制，而且还可适应盘式刹车恒钻压自动送钻的控制。
The design contents of the software and hardware of the system were given. The system is not only used for optimization WOB automation bit feed of the disc brake but also constant WOB.
该系统不但可以适应盘式刹车钻压优化自动送钻的控制，而且还可适应盘式刹车恒钻压自动送钻的控制。
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