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鉆压波动对井眼轨迹的影响。
The increased WOB is not good for deviation control.
当转速一定时,提高鉆压不利于防斜打直。
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:静压切削或沖击切削的破巖深度、切削力随wob的增加均随之增加。
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:组合载荷破碎巖石的深度、体积随静压和沖击能增加而增加,破巖比能则随之下降。
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。
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剎车鉆压优化自动送鉆的控制,而且还可适应盘式剎车恒鉆压自动送鉆的控制。
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.
阐述了盘式剎车鉆压优化自动送鉆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。
The effect of WOB to pressure drop of small geometry PDM is bigger than to large geometry PDM.
小尺寸螺桿压降受鉆压影响比大尺寸螺桿大;
The pressure drop increases as WOB bocomes bigger, the bigger the delivery of PDM, the larger the pressure drop.