Sand control measures in horizontal wells are mainly based on screens. Horizontal wells have a certain length of horizontal displacement and the kick-off section with large curvature. Therefore, it is necessary to evaluate the safety of the screen downhole run before it runs into the hole, in order to minimize the running risk. In this paper, the pipe string is divided into sections, and the equivalent force for each elementary section is analyzed. Then, the axial force and friction resistance of the pipe string are calculated. According to the buckling criterion of the string and the mechanical strength theory, this paper evaluates whether the screen can safely and smoothly run down to the bottom of the well. This analytical method of solving the physical model is feasible and easy to understand and can be implemented using computer programming applications.

中文翻译：

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水平井筛管运行摩擦分析解决方案

水平井的防砂措施以筛管为主。水平井有一定长度的水平位移和大曲率的开井段。因此，有必要在筛管下入井前评估其下井运行的安全性，以最大程度地降低运行风险。在本文中，管柱被分成多个部分，并分析了每个基本部分的等效力。然后，计算管柱的轴向力和摩擦阻力。根据管柱的屈曲判据和机械强度理论，评价筛管能否安全平稳地下至井底。