查询词典 outer casing

Temperature's effect on casing joint sealing and casing additional loads is discussed in this paper.

本文主要讨论了温度对套管接头密封性能的影响和温度对套管附加载荷的影响。

The conventional casing centralizer can not meet the requirements of expandable casing.

传统的套管扶正器满足不了可膨胀套管的扶正要求。

The casing centralizer is used to centralize the casing in the bolehole to ensure the even solidification of cement slurry within the annular,which can improve the cement job quality.

套管扶正器的作用是使套管在井眼内居中，保证固井时水泥浆均匀凝固在套管与井壁所形成的环形空间内，从而提高固井质量。

This method is clear in concept, calculated simply , results accurately in calculation, and used on site conveniently, which provides scientific fact for the correct discription of casing string flexural equation ,accurate calculation of casing flexural deform, and reasonable determination of centralizer position.

但这种计算模式都是基于轴向力为零，只考虑了套管自重引起的横向均布荷载对挠曲变形产生的影响，因此，这种方法仅仅适用于计算"中和点"附近套管柱挠曲变形量这种特殊情况。更加普遍的情况是，套管不仅受自重引起的横向分力的影响，还受轴向力的作用。

The fixation of oil-well establishment is an important thing , and the design of casing is also crucial . So how to make it durable and economical is our purpose - optimization of casing size and coadjutor layout .

固井是油井建井过程中的一个重要环节，而套管设计又是其中的一个关键问题，如何让其满足强度要求而又尽可能的经济，即追求套管尺寸和扶正器布局的最优化是我们最追求的目标。

The fixation of oil-well establishment is an important thing, and the design of casing is also crucial. So how to make it durable and economical is our purpose- optimization of casing size and coadjutor layout.This article introduces the optimization of what have mentioned above.

固井是油井建井过程中的一个重要环节，而套管设计又是其中的一个关键问题，如何让其满足强度要求而又尽可能的经济，即追求套管尺寸和扶正器布局的最优化是我们最追求的目标。

According to the elastic-plastic theory, the calculation method of tangential stress , radial stress of expansion casing both in elastic deformation area and in plastic deformation area is deduced and the minimum critical load between expansion core and casing was determined.

根据弹塑性的理论，推导了膨胀套管在弹性变形区和塑性变形区的周向应力和径向应力计算模型，确定了膨胀套管膨胀时在膨胀芯头与套管之间所需的最小接触载荷。

Research results indicate that casing bend not only makes effective cross section decrease but also leads to casing snapping owing to larger local tensile stress.

结果表明：套管弯曲不仅使有效横截面降低而且由于局部拉应力过大造成套管拉断。

Based on theoretical study and test, by using finite element numerical method, the force and deformation of casing with cement sheath under nonuniform load is analyzed, and the effect of two sensentive parameters, the nonuniform load ratio and ellipticity, on the failure of casing is discussed.

在已有的理论研究与试验工作的基础上，采用有限元数值方法，分析计算了受非均匀地应力作用下套管-水泥环结构的受力与变形，讨论了两个敏感参数——非均匀载荷比和套管椭圆度对套管失效的影响问题。

Applying the casing tube of immersion heater made of this alloy to the hot-dip galvanizing industry, the examination of the industry show the casing tubes usually rupture after running about 50 days.

将该材料制成的热镀锌内加热器外套管直接应用于热镀锌的内加热设备上进行工业试验，元件在工作50天左右时出现意外断裂。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"