Abstract: The beam-column theory is applied to the study of the influence of hole curvature, inverse bending moment of collar, near-bit stabilizer etc. on the positioning of stabilizer for bottomhole pendulum assembly and rigid packed hole assembly, and appropriate equations for calculation are given. The paper points out that the method of calculation proposed by Woods and Lubinski is applicable only to pendulum assembly for inclined straight hole, while the modified equation of Hoch, in which no consideration is given to such factors as the inverse bending moment of collar, near-bit stabilizer etc., does not reflect the actual bottomhole conditions and therefore its application to rigid packed hole assembly is inappropriate.

摘要： 本文应用纵横弯曲梁理论,研究了井眼曲率,钻铤反弯矩,近钻头扶正器等十项参数对井下钟摆钻具和刚性满眼钻具扶正器位置的影响问题,并给出了相应的计算方程。文章指出,Woods Lubinski计算方法只适用于斜直井内的钟摆钻具计算,而Hoch及其修正公式,由于未考虑钻铤反弯矩,近钻头扶正器等一系列因素,而未真实地反映井下状况,用来计算刚性满眼钻具亦欠妥当。