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当转速一定时，提高钻压不利于防斜打直。The increased WOB is not good for deviation control.

钻头使用初期要慢一点转，钻压要低一点。Slow RPM and light WOB are needed in drilling with a new bit at the beginning.

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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。The recursion formula for calculating WOB are established by means of the mechanical analysis.

在此基础上，建立了对弯曲井眼中的钻柱进行井底实际钻压分析的基本方程及相应的迭代求解格式。Thereby the basic equations for analyzing the actual bottom hole WOB in curved holes are worked out.

在防斜效果不变的情况下，可采用较大钻压钻进，大大提高了直井段的机械钻速。At the same deviation, the big WOB can be applied to increase the penetration rate in the straight hole.

当对钻具施加的名义钻压一定时，随着转速的增加，平均钻压有减小的趋势。When nominal WOB is certain, the average value of WOB has the tendency of reduction with the rotational speed increasing.

实例分析验证了这种观点。同时由于压力是靠弹簧和液压传递的，所以其还有减振的效果。An example proved the view, while the WOB is transferred by spring and fluid pressure, the vibration of drill string can lie diminished.

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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。For the ALI dogs, during PAV, different assist ratios had much influence on airway pressure and WOB , and less influence on hemodynamics.

通过对传动轴止推轴承的受力分析，提出了合理钻压的确定方法。This paper presents the method determining the reasonable WOB by the thrusting force analysis of the bearing section of transmission shaft section.

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。The effects of WOB fluctuation of drill string on the wellbore trajectory are analyzed by using stochastic finite element method and perturbation equation.

另外，在减小直井底部钻柱纵向振动的问题上存在钻压与转速的优化组合。Moreover, regarding to reducing the longitudinal vibration of bottom string in straight hole, there is the problem of optimization grouping between WOB and rotary speed.

该系统理论先进，控制可靠，经现场调试和试验证明，运用该系统能够实现试验装置的钻压模拟与随钻跟踪，是一套比较实用的钻压模拟控制系统。The field test and adjustment prove that using this system can realize WOB simulation of testing unit and tracing WOB while drilling, it is a practical WOB simulation control system.

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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.

空气锤钻井是一种低钻压、低转速、高冲击破岩回转钻进技术，它兼容了气体钻井和冲击回转钻井的优势，其机械钻速一般比回转钻井高，是当今解决硬岩钻井难题的一种有效方法。Pneumatic hammer drilling technology with low wob , low rate of revolution and high capacity to break rock is one of the best effective methods to solve the problems of hard rock drilling.

对于独立结构扩眼器，钻压分配比的变化通常对钻具钻进趋势的影响较小，独立结构扩眼器的防斜主要依赖于领眼钻头与扩眼器之间稳定器位置的调节。For the RWD tools with independent reaming structure, the ratio of WOB has less effect on the drilling tendency, and the borehole inclination control mostly depends on the stabilizers position.