实体可膨胀管变形力与膨胀工具模角关系研究

On the relationship between the deformation force of solid expandable tubular and model angle of expandable tool

建立了实体可膨胀管膨胀过程的三维非线性接触问题有限元分析模型,通过对模型的求解,得出膨胀管与膨胀工具在不同的接触条件、可膨胀管在不同的内径膨胀率及不同的壁厚条件下,膨胀变形力与膨胀工具模角的关系。用107.95mm套管做了实体膨胀试验,通过试验测得的膨胀变形力与用模型求得的计算结果符合得很好,完全可以满足实际工程的需要,证明提出的模型及其求解结果正确可信。

A 3 dimensional model is established for a finite element analysis on nonlinear contact problems in the expansion process of expandable tubular. A solid expansion test is conducted with Φ 107.95 mm casing, by solving the model, the relation between the expanded deformation force and model angle of the tool is obtained for the expandable tubular and expansion tool under different contact conditions and for the expandable tubular with different expansion rates of inside diameters and different thickness..