阐明了石油钻井工程的学科特点，指明了石油钻井的发展趋势与内在动力，并对21世纪石油钻井技术进行了展望，论述了高温高压钻井、深井超深井钻井、特殊工艺钻井及三维可控与可视化钻井等技术系列的重要意义。

Casing failure is a worldwide problem in oil industry and severely impacts the economic benefits. The typical forms of the casing failure includes casing corrosion, radial deformation and shear etc., and the causes include corrosion of the formation water, non-uniform load on the casing initiated by the formation deformation or the hydration of the shale, shear initiated by formation sliding. As to the casing failure induced by the reservoir compaction, the reasons and the mechanisms of the reservoir compaction were studied ; furthermore, the mechanisms of the casing failure in the compaction reservoir were analyzed and presented in detail. Measures for controlling casing failure in the compaction reservoir are put forward, which include increase the level of the casing design and determine suitable casing program; inject water to maintain the formation pressure, use the non-API thick wall

在宏观上回顾了国内外旋转钻井科技发展的历史过程，简要地总结归纳了钻井科技发展的历史经验和教训，并对油气钻井技术发展的现状、趋势及国内外差距进行了认真分析。在此基础上，针对我国陆上油气勘探与开发对钻井技术的主要需求，探讨了我国今后油气钻井技术发展的思路和目标，并简要论述了钻井关键技术的研究与开发重点。

During well testing and production, the helical buckling often occurs near the lower end of tubing and friction appears. When loading continues or temperature increases, the tubing deformation will develop under post buckling condition, and it is difficult to describe the axial force with analytic method, that is why numerical method is needed. In this paper, plastic incremental theory in plastic mechanics is used to calculate the axial force distribution of buckled tubing strings, according to which the final axial force and deformation are determined by both the initial state and the loading process. It is found that the axial force distribution of tubing with friction is changed significantly and is strongly dependent upon the operation steps. The friction can prevent the large loads caused by high pressure and/or high temperature from spreading so that only a small part of tubing deforms severely. This calculation method was verified by experiments and has been used in oil fields.

应用钻头与地层相互作用模型[1]，对钻头和地层的各向异性钻井特性进行了综合分析研究，给出了相应的等效表达式。在此基础上，本文提出了一种图形分析方法，从而可以在微机上以彩色图形直观显示钻头和地层各向异性对井斜变化和方位漂移的影响规律，便于钻井技术人员理解和使用。