讨论了初弯曲对钻柱横向非线性振动的影响。
The influence of the initial deflection on the nonlinear lateral free vibration of drill stem is discussed.
对世界海洋石油钻采设备的现状作了介绍并对21世纪初的发展前景作了展望。
This paper deals with the recent development and state of arts of world offshore drilling and production equipment and also looks forward to the future of early 21st century.
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