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根据套管螺纹接头的结构和受载特点，在先期建立的套管接头螺纹旋合接触的有限元分析模型和分析程序的基础上，研究了因加工误差而造成套管接头内、外螺纹螺距不一致时对其载荷传递特性的影响；给出了在内、外螺纹具有不同的螺距配合时，载荷在套管接头各扣螺纹上的分布规律曲线，为设计时合理选择套管接头内、外螺纹的螺距公差提供了依据．
According to the structure and load characteristics of the casing threaded joint, based on the finite element analysis model and analysis program of the pre-established threaded joint of the casing joint, the influence of the machining error on the internal and external thread pitch The effect of load on the load transfer characteristics is analyzed. The distribution curve of the load on the buckle threads of the bushing joints when the internal and external threads have different pitch is given. Thread pitch tolerance provides the basis.