查询词典 drill

In the event failures of boring tools, the fatigue failure of the drill collar is especially prominent.

在钻具失效事故中，钻铤的疲劳失效尤为突出。

It is shown through computation that the orientative exploring capacity of the tool is greatly enhanced because of the existence of the drill collar.

计算发现，钻铤的存在大大提高了仪器的定向探测性能。

They found that more than 80% of the failures can be attributed to fatigue or fatigue related failures and most of them occur at the screwed joint of the drill collar.

石油管材研究所对近几年失效事故进行分析，有80％以上失效属于疲劳或与疲劳相关的失效，其中绝大部分发生在钻铤的螺纹联接处用。

A type of logging-while-drilling density log in which the density is measured at different azimuths around the drill collar.

一种随钻密度测井，测量钻铤周围不同方位的密度。

Take that drill collar up to the derrick floor?

把那根钻铤拉到钻台上来。

Using the model,the stress distribution on drill collar threads is analyzed in detail,and the methods to improve stress conditions of a collar connection and the steps to minimize stress focus are also presented.

依据此模型，详细分析了钻铤螺纹的载荷分布规律，提出了改进钻铤接头受力状态，减少应力集中的主要措施。

Because its rigidity are less than the drill collar, less contact area with wall of a well , is also not easy to form differential pressure sticking.

由于其刚性比钻铤少，和井壁接触面积小，也不容易形成压差卡钻。

Drill collar thread ; finite element method ; stress ; structure optimization

钻铤螺纹；有限元；应力；结构优化

The control method is special for the angular position of a circle rotation object without any fixed support point in the drill collar.

钻铤内无固定支撑点的圆周旋转运动状态角的控制方法具有许多特点。

Stress-relief structure not in accordance with related standard and the stress situation would lead the thread root to be the weakest position of drill collar box.

结果表明，钻铤材料中MnS夹杂物超标，螺纹底部和牙侧存在腐蚀坑和加工划痕，这些缺陷的存在降低了钻铤的服役能力。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。