On the basis of energy method, the possibility of drill stem buckling in inclined straight hole is studied.

本文应用虚位移原理，在充分考虑钻柱所处的特殊环境的基础上，考察了斜直井眼中钻柱屈曲的可能性。

youdao

The on-site tests of 5 wells showed that the stiffness of lower drill pipe assembly was increased to control deviation in the straight hole.

经现场5口井试验表明，不弯曲钻铤能够起到增大下部钻具组合刚度，控制直井段井斜的作用；

youdao

It also figures out that the wellbore stability of directional well in the West of Sichuan Basin will be much better than the straight hole with the increasing of the deviation and relative azimuth.

计算结果同时证明，如果在川西深层采用定向井钻井，其井壁稳定性将不会因为井斜角、相对方位角的变化而变差，且地层破裂压力会随井斜角和相对方位角的增加而大幅提高。

youdao

It's gone straight into a hole in the ground and then it's been buried.

BBC

It's going to go straight into a hole in the ground, because the hard plastics that make up things like the big six pint milk bottles have some value.

BBC

Tiny screws do not necessarily go straight into the correct hole first time after all.

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