当转速一定时，提高钻压不利于防斜打直。
小尺寸螺杆压降受钻压影响比大尺寸螺杆大；
The effect of WOB to pressure drop of small geometry PDM is bigger than to large geometry PDM.
最后完成了对于钻压模糊控制算法软件的编制。
At last, bit pressure control arithmetic based on fuzzy theory is compiled.
计算表明：螺杆钻具压降随钻压的增加而增大；
The pressure drop increases as WOB bocomes bigger, the bigger the delivery of PDM, the larger the pressure drop.
本文介绍一种如何用微机对钻压实现测量的系统。
It will be introduced a new method to measure the drilling pressure system with microcomputer in this paper.
实验结果表明，钻柱的纵向振动主要与转速和钻压有关。
The results show that longitudinal vibration of drill string is relative to rotary speed and weight on bit (WOB).
钻压、扭矩、侧向力、环空压力等钻井工程参数可以随钻进行测试。
It can measure drilling engineering parameter, such as drilling pressure, torque, side pressure and annular pressure etc.
油田钻井过程中，钻压、扭矩等是司钻人员必须掌握的重要参数。
In the oil exploitaion, drilling pressure and drilling moment are very important parameters for operator, and he must be very experienced with them.
为确定合理的钻压值，对岩石的抗钻进强度也作了初步的分析和探讨。
It is shown that the regression equation of experimental data agrees well with the theoretical equation. A preliminary analysis of the rock strength has been made to determine the ration...
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.
文中给出了钻压和转速对预弯曲动力学防斜打快钻具组合防斜力的影响规律。
Also, it is described the influence of bit pressure and rotate speed on anti-deviation force of the BHA of anti-deviation and fast penetration with pre-bending dynamics.
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。
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).
给出了针对试验操作要求及钻压伺服系统的非线性、不确定性的钻压伺服控制系统。
According to the requirement of test operation and the non-linearity and uncertainty, this paper brought out the pressure servo control system.
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。
Application of downhole hydrodynamic propulsors solves the problem of exerting WOB, and are helpful to enhancing penetration rate.
当改变钻压时，钻压波动范围也随之改变，但波动幅度均值与钻压均值的比值不变。
The undulation scope of the bit weigh can change with the changing of the bit weigh, but the average of the undulation and the average of the bit weigh are unconverted.
钻压和转速是影响钻柱运动状态的两个主要因素，转速越高，越容易形成规则涡动；
The weight on bit and rotary speed are the main factors affecting the motion behavior of drill string. The higher the rotary speed is, the more easily the regular whirling will be formed.
定钻压、定转速条件下的单切削齿磨损速度试验结果表明，切削齿的线磨损模式是正确的。
On the basis of analyzing cutting mechanisms of cutters, a linear wearing speed model is established by researching the abrasive law of cutters.
与邻井常规钟摆钻具组合相比，这种钻具组合的钻压提高50%以上，机械钻速则提高120%。
The bit pressure of the BHA can increase more than 50% and the penetration rate can increase 120% comparing with the adjacent Wells using conventional pendulum drilling assembly.
分析试验结果得出，对于表面刮削破碎和体积破碎两种岩石破碎状态，钻压对扭矩的影响不一样。
The result of experiment shows that the effect of weight on bit on the torque is different for two different conditions of surface scraping rock break and volume break.
钻井过程中，近钻头处钻压、扭矩等钻井工程参数的随钻准确测量对安全、高效钻井是十分重要的。
The measurement of engineering parameters near the bit while drilling is of significant importance for the safety and efficiency in a drilling process.
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。
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.
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.
结果表明，在地层随机激励作用下，钻柱的振动将会引起钻压的波动，从而影响钻头的寿命及其钻进的速度。
The results show that the vibration of drilling strings will produce the fluctuation of weight on bits by random excitation, so the bit life and drilling rate are affected largely.
本文设计的物探钻具性能测试系统可完成对钻井过程中的空气压力、空气流量、转速、钻压、钻井深度等参数的测试。
The designed testing system in the paper can complete these tests as to air pressure, airflow rate, rotary speed, bit weight and drilling depth in the process of well drilling.
通过数理统计的方法，采用多元回归方程建立了压差卡钻压差临界值模型，此模型可以用于指导库车山前构造钻井施工。
By methods of mathematical statistics, we use the multiple regression equation to establish critical value model. The model can be used to guide the drilling in Kuqa's piedmont configuration.
为此，推导了钻具在自重作用下失稳的临界钻压及临界失稳长度公式，以便使公式更符合BHA自身的受力特点，提高计算准确性。
SO, the formulas of BHA's critical load and critical length were deduced and given by the hor to fit in with the BHA's loading features as well as to improve the calculating exactness.
介绍了美国和中国的两种保温保压取芯钻具的专利技术以及国内在此领域取得的一些成就，提出了一些设想。
Two patent technologies about apparatus for pressure coring are introduced and some achievements of China in this field are enumerated. At last, some questions are brought forward.
有可能利用积分rms这一参数来估价岩石压入硬度，并进一步预报岩石可钻性。
It is possible to use the parameter integrated RMS to assess rock indentation hardness and further to predict rock drillability.
对大部分钻井组织而言，就时间和费用而论，压差卡钻是发生最多的事故。
Differential sticking is, for most drilling organizations, the greatest drilling problem worldwide in terms of time and financial cost.
对大部分钻井组织而言，就时间和费用而论，压差卡钻是发生最多的事故。
Differential sticking is, for most drilling organizations, the greatest drilling problem worldwide in terms of time and financial cost.
应用推荐