Особенности механического поведения бурильных колонн в криволинейных скважинах с локализованными геометрическими несовершенствами

摘要

On the basis of the theory of curvilinear flexible rods the problem on the elasticudbending of drill strings in the channels of curvilinear deep bore-holes with geometricudimperfections of their axial lines is stated. Through the use of numerical methods the analysisudof the dependence of the force resistance on the amplitudes, step lengths and localizationudplaces of harmonic imperfections is performed. The calculation results are discussed.