wob

wob

1. Drilling Parameter Model with the "Low Rotation Speed - High WOB" of PDC Bits and Its Application

PDC钻头的"低转速-高钻压"钻井参数模式及应用

2. WOB: A Novel Approach to Checkpoint Active Files

一种新的文件检查点设置策略

3. This paper presents the original well bottom model and PDC bits model, and two concepts are defined: contacting arc length and threshold WOB.

为方便分析,假设了原井底模型和PDC钻头模型,定义了接触弧长和门限钻压两个概念。

4. Many methods have been tried to solve the deflecting problem in highly steep structure, however with few successful under high WOB condition.

为解决高陡构造的井斜问题,钻井界试验了很多办法,但真正能够实现大钻压降斜的技术措施仍然很少。

5. The main products are WOB Park Bridge Series, KBL flat Bridge Series, KBPC Fangqiao series, and all kinds of diodes, manufacturers and distributors welcome calls to negotiate.

主要产品有WOB园桥系列，KBL扁桥系列，KBPC方桥系列，及各种二极管，欢迎厂家和经销商来电洽谈。

6. 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。

7. Application of servocontrol technique in simulation of WOB

伺服控制技术在钻压模拟中的应用

8. 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。

9. Keywords drilling rig;disc brake;weight-on-bit（WOB）;

关键词钻机;盘式刹车;钻压;

10. weight on bit(WOB) high pressure

切削破岩

11. 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.

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。

12. 6.Pressure balance is also applied in WOB calculation.Field test showed that both models are reliable and the calculated results are correct.

同时也用压力平衡法计算出钻压，现场试验表明，两模型可靠、计算结果正确。

13. WOB ;

呼吸功 ;

14. Keywords Work of breathing （WOB） Non-invasive positive pressure ventilation （NIPPV） COPD;

呼吸功;无创正压持通气;慢性阻塞性肺疾病（COPD）;

15. And the borehole diameter enlargement is significant cause of well deviation during gas drilling under medium or high WOB.

在中、大钻压下，井径扩大是气体钻井容易井斜的重要原因；

16. In drilling high angle deviated holes, friction is the main factor affecting the effective WOB.

在大斜度定向井钻井过程中，摩擦阻力是影响有效钻压的主要因素。

17. The factors,such as WOB,deviation angle,hole curvature and clearance between stabilizer and wellbore,effecting bit side force have been discussed.

在此基础上，通过算例分析，阐明了钻压、井斜角、井眼曲率及稳定器间隙对钻头侧向力的影响规律。

18. The Wearing Law of One PDC Cutter under Fixed WOB and Fixed Rotary Speed

定钻压、定转速条件下PDC钻头单切削齿磨损规律研究

19. An example proved the view, while the WOB is transferred by spring and fluid pressure, the vibration of drill string can lie diminished.

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。

20. 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。

21. 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.

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。

22. Keywords the western Sichuan;comprehensive mud logging;tight sandstone;fracture;identification model;drilling time;WOB;

川西地区;综合录井;致密砂岩;裂缝;识别模型;钻时;钻压;

23. When nominal WOB is certain,the average value of WOB has the tendency of reduction with the rotational speed increasing.

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。

24. When nominal WOB is certain, the average value of WOB has the tendency of reduction with the rotational speed increasing.

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。

25. The calculated results show that decrease of weight on bit (WOB) or incr...

扶正器位置上移基本上不利于纠斜,也不利于控制钻铤(或接头)偏磨;

26. Methods WOB phy was obtained by the patient's work of breathing (WOBt), minuting the imposed work of breathing (WOB imp ).

方法监测患者呼吸功（WOBt）和器械导致的附加功（WOBimp）推算WOBphy。

27. Keywords rotary drilling + impacting drilling;impact tool;jet flow;WOB;ROP;field testing;Changqing Oilfield;

旋转钻井十冲击钻井;冲击器;射流;钻压;机械钻速;现场试验;长庆油田;

28. WOB CALCULATION FOR COMBINATION OF HYDRAULIC THRUSTER AND DOWNHOLE MOTOR

水力加压器和井下马达组合时的钻压计算

29. Research on Bottom WOB of Horizontal Well

水平井井底钻压的研究

30. The field application shows that this technology can solve the contradiction between hole deviation and WOB during fast drilling, the drilling efficiency can be increased very obviously.

现场应用表明：该技术较好地解决了钻井提速工作中井斜与钻压之间的矛盾，使钻井效率明显提高；

31. Rock failure mode during drilling using ballas bit is similar ro shearing with high RPM andlow WOB.

由于巴拉斯钻头是剪切破岩，并且有高转速、低钻压的工作特性，笔者用它进行纠斜和防斜。

32. The analysis of the connection between adjusting disc brake and WOB

盘式刹车调节与钻压关系的分析

33. How to change off-line optimization weight-on-bit(WOB) model into on-line real-time optimization WOB model during bit automatic feed is researched.

研究了如何把过去由地质人员离线确定优化钻压的模型变为自动送钻中在线实时的钻压优化模型。

34. 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.

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。

35. These methods that then real-time diagnosis is carried out and optimizing model for WOB is built up by use of BP neural network were given.

给出了利用反向传播神经网络（BP网络）进行实时诊断和建立钻压优化模型的方法。

36. wob spider

网络爬虫

37. Keywords automatic bit feeding;optimizing model for weight_on_bit （WOB）;neural network;real time.;

自动送钻;钻压优化模型;神经网络;实时;

38. A New Method of Solving Build-up Hole Angle Problem on Pendulum Assem bly while WOB Is Increasing

解决钟摆钻具在大钻压下增斜问题的新思路

39. 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。

40. 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.

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。

41. Mike: Tell you the truth. Ah, I don't know, I'm getting a little bummed with WOB.

迈克：说老实话，嗯，我在汉堡包房受了点挫折。

42. 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。

43. This paper presents the method determining the reasonable WOB by the thrusting force analysis of the bearing section of transmission shaft section.

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。

44. The experiments use different WOB, rock, drill tooth, drill shift wheelbase, drill speed to obtain multi-group different craters experiment datum.Then calculate the experiment datum.

针对不同的钻压、岩石、钻头齿形、钻头移轴距、转速等因素进行破碎岩石实验，得到多组不同的破碎坑实验数据，并对实验所得的破碎坑进行处理计算。

45. Keywords drilling;high WOB;borehole deviation;deviation control;rate of penetration;

钻井;大钻压;井斜;防斜;机械钻速;

46. 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

47. Slow RPM and light WOB are needed in drilling with a new bit at the beginning.

钻头使用初期要慢一点转，钻压要低一点。

48. The bending moment can be related to the formation drillability, BHA configuration and drill bit size, and is proportional to the applied WOB.

钻头弯矩与交错层的可钻性、下部钻具的结构和钻头的几何尺寸有关,并且与所加的钻压成正比。

49. Keywords articulated drilling string;mechanical model;WOB;horizontal well;inclinalion angle;

铰接式钻柱串;力学模型;钻压;水平井;井斜角;

50. Abstract 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。