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本文分析了影响井眼曲率的主要因素,论述满眼防斜钻具组合设计的原则。用纵横弯曲连续梁理论分析中、上扶正器的位置对钻头偏斜角和侧向力的影响及确定中、上扶正器合理位置。表明用实用组合方法能够很简便地获得合理的组合设计。
This paper analyzes the main factors that affect wellbore curvature, and discusses the principle of combined design of full-blind anti-inclined drilling. The vertical and horizontal bending beam theory is used to analyze the influence of middle and upper centering positions on the bit skew angle and lateral force and to determine the proper position of centering and centering centralizer. It shows that the reasonable combination design can be obtained easily by the practical combination method.