【摘要】 水平井中的造斜段井身轨迹处于弯曲状态,因此位于其中的套管柱具有初弯曲。这样弯曲井段中套管柱不仅要受到自重产生的横向均布载荷和纵向载荷的作用,而且还有初弯曲,受力及变形很复杂。在考虑弯曲的条件下利用力法对弯曲井段中套管柱的挠曲变形进行了分析计算,推导出了相应的计算公式,其结论对工程实际有一定的指导意义。更多还原

【Abstract】 The hole trace of making inclination segment is curved in the horizontal well, hence the casing string in it has a preliminary curvature. As a result, the casing string in curved segment of the well is not only subjected to even lateral load produced by its dead weight and longitudinal load, but also has a preliminary curvature, so that the forces subjected to and deformation are very complicated. Considering the preliminary curvature, the deflection of casing string in curved segment of the well is analyzed and calculated by static method in this text, and the corresponding calculate formula is derived. The conclusion has specific directive significance to engineering practice.更多还原