One of three main features of current top-drive realizes stand drilling,ream dow,reverse ream dow decrease the labor strength and save drilling period.
顶部驱动装置是近代钻井装备的3大新技术之一,在钻井施工中使用顶部驱动装置能够实现立柱钻进、划眼和倒划眼,极大地降低了工人的劳动强度,节约了钻井时间。
In terms of the penalty rules of normal-direction contact restriction,the contact force between reamer wings and rock was calculated.
为了解随钻扩眼工具在井眼内的运动状态和受力情况,促进钻井工具的优化设计和更合理的应用,对随钻扩眼工具在井眼内的运动进行了研究,给出了基于拉格朗日方程的动力学分析方法;基于法向接触约束的惩罚准则,计算了扩眼刀翼与岩石之间的接触力,对随钻扩眼工具在井眼内的运动过程和动力响应进行了动力学仿真研究。
Application of reaming while drilling tools in Shengli Oilfield;
胜利油田随钻扩眼工具及其应用
Aiming at safe and high effective borehole enlargement issue of deep well,ultra-deep well and high pressure oil/gas well in drilling operation,actual force behaviors of drilling string assembly reaming while drilling in downhole are researched,by using tri-axial finite element approach twisting vibration of reaming drill string while drilling is simulated.
针对深井、超深井、高压油气井等钻井作业中安全高效的扩眼问题,研究随钻扩眼钻具组合在井下的实际受力情况,对随钻扩眼钻进钻柱扭转振动进行了三维有限元模拟,提出了研究扩眼器的质量偏心、钻机顶部支撑等因素对扭转振动作用的力学分析模型,并讨论了随钻扩眼钻具组合的扭转振动频率和动力学强度等力学问题。
three point neat-bit reamer
三点式近钻头扩眼器
Morisette expansion reamer
刀翼可撑出的扩眼器
insert reaming shell
镶有金刚石条扩眼器
We've got to broaden our scope.
咱们应当扩大一下眼界。
(used of eyes) fully open or extended.
（用于眼睛）完全睁开或扩大的。
2.17 No allowance for volume of hole enlargement.
不包括井眼扩大的泥浆体积。
Things go well, your eyes dilate, you shake, and Im high?
事情搞好了,你的眼睛扩张,你动摇、肠高?
The spreading disease infected eyes, and she became blind.
疾病扩散影响到双眼，她失明了。
This has yielded a result, but it has not increased our insight.
这给出了结果，但并未开扩我们的眼界。
learn a foreign language to expand one's scope
为扩大眼界而学习外国语言
Eye contour extraction using PCA transform scattering projection
基于PCA变换扩散投影的人眼轮廓提取
A muscle that dilates a body part, such as a blood vessel or the pupil of the eye.
扩张肌扩张身体部分的肌肉，例如血管或眼睛的膜孔
Prolonged, abnormal dilatation of the pupil of the eye caused by disease or a drug.
瞳孔扩散由于疾病或者药物引起的眼睛瞳孔变长、不正常的扩大
The loosening holes outside the plough cut are also drilled at an angle which improves the breakage possibility.
在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。
This offer is based on an expanding market and is competitie.
此报盘着眼于扩大销路而且很有竞争性。
Screening for retinopathy: This is performed when pupils are dilated, either by fundoscopy or retinal photography.
视网膜病筛检：眼底镜或视网膜镜检查，扩张瞳孔。
Research on Sandstone Borehole Enlargement Mechanisms and Prevention Technology in Lamadian Oil Field
喇嘛甸油田砂岩井眼扩大机理和预防技术研究
Application of expanded flaps in repair of eyelid defects
扩张皮瓣在修复眼睑软组织缺损中的临床应用