油水井取套过程中套铣筒摩擦阻力分析计算

FRICTIONAL RESISTANCE ANALYSIS AND CALCULATION OF WASHOVER-STRING IN PROCESS OF EXTRACTING CASING

摘要: 通过对套铣筒这种特殊结构钻柱的分析，在现有钻柱力学模型研究的基础上，针对套铣筒结构特点(大筒径、薄壁筒型钻柱)，建立套铣筒与井壁接触力学模型，通过分析套铣管柱在井下屈曲状态以及与井壁接触压力的计算，对套铣筒进行力学分析以及摩阻力计算.

Abstract: Based on the existing string mechanicalmodel, the mechanicalmodel of washover-string is built with its structure features (big diameter,thin-wall). After washover-string inflexion condition and contact force areanalyzed, friction resistance of washover-string is calculated and analyzed.