| 1. | Effect of resistance in polymer flooding on sucker rob partial abrasion
聚合物采出液中的阻力对抽油杆管偏磨的影响 |
| 2. | Finite element analysis of the influence of casing eccentric wear rate on collapsing strength
套管偏磨曲率对其抗挤毁强度影响的有限元分析 |
| 3. | It states the tyre fraying or nor lie on landscape - orientationl - mete which tyre comparative with ground in truck moving
本文针对bj1027皮卡轮胎偏磨这一问题，进行了深入细致的分析研究。 |
| 4. | The technology mentioned could prolong the service life of old pipe , reduce eccentric wearing , and extend the wax removal cycle
对延长旧管使用寿命，减少杆管偏磨，延长油井清蜡周期具有良好的效果。 |
| 5. | The calculation results demonstrate the effective eccentricity and the lifting force of the upper drill string are the major influential factors
计算结果表明，有效偏心距和上部钻柱的提升力是影响近井口套管偏磨的主要因素。 |
| 6. | Abstract : this paper analyzes the mechanism of side attrition of pumping rods and tubes after polymer flooding , and proposes a method of comprehensive prevention
文摘:从生产实际出发，结合理论分析，较全面地分析了聚合物驱油后出现杆、管偏磨现象的机理，并提出了综合防治的基本措施与方法。 |
| 7. | In the process of oilfield production , quite a proportion of maintenance operations on mechanical production wells are due to rod breakdown or tubing leaking resulted from borehole deviation and eccentrically worn string
摘要在油田生产过程中，机采井维护性作业有相当的比例是由于井料造成管杆偏磨，导致抽油杆断脱或油管漏失。 |
| 8. | Since the deeper the well , the higher the lifting force at the upper drill string , the deviation of derrick and the well head ' s eccentricity should be avoided by all means to prevent the severe eccentric wear on the casing which is caused by excessive effective eccentricity
由于上部钻柱的提升力随井深的增加而增加，因此应当尽量避免井口偏心或井架安装不正，防止有效偏心距过大而造成近井口套管的严重偏磨。 |
| 9. | Based on the dynamics , a mechanical model calculating the drill string ' s eccentric wear is established , the approximation equation calculating the positive pressure on casing / drill string is derived out , and the major factors affecting the eccentric wear are analyzed
针对深井钻井中的井口附件套管偏磨问题，以动力学为基础，建立了钻柱偏磨力学模型，推导出了套管钻柱正压力的近似计算公式，分析了影响偏磨的主要因素。 |
| 10. | In order to effectively reduce such losses , multifunctional stereo anti - eccentrically worn string has been developed and applied , workover operations due to eccentrically worn have been effectively reduced , the workover - free period is extended , and the production efficiency of oil wells is improved
为了有效减少这种损失，研究与应用了多功能立体防偏磨配套管柱工艺，有效地减少了偏磨引起的修井作业，延长了油井的免修期，从而提高油井的生产时率。 |
