基于Ansys的封隔器密封胶筒性能优化

封隔器密封胶筒在井下实际应用中力学特性复杂,同时需要承受高温高压饱和水蒸汽的强腐蚀作用,故对胶筒材料性能的要求异常苛刻。为改善密封胶筒的结构稳定性及高温高压水耐腐性,以密封胶筒为研究对象开展有限元仿真分析,通过胶筒结构参数、界面摩擦性能和材料特性等因素对其力学特性及密封性能影响规律的比较,提出软硬质材料多层堆叠及环端面金属包覆结构以实现性能优化。仿真结果表明,优化后的结构改善了密封胶筒肩部的挤出现象,增大了接触区域的密封效果,同时阻挡了高温高压水对胶筒的腐蚀。

Performance Optimization of Packer Sealing Rubber Based on Ansys

The mechanical characteristics of packer sealing rubber are complex in downhole application,and it needs to withstand the strong corrosion effect of high temperature and high pressure saturated water vapor,which makes the material performances of the packer rubber extremely demanding.In order to improve the structural stability and he high temperature and high pressure water corrosion of sealing rubber,the finite element simulation analysis of the packer rubber was carried out.By comparing the influences of structure parameters,interface friction performance and material properties on its mechanical properties and sealing property,the multilayer stack of the hard soft materials and ring end chamfering metal cladding structure were presented to realize the performance optimization.The simulation results show that the optimized structure improves the packer rubber extrusion phenomenon of the shoulders,increases the sealing effect of the contact area,and prevents the high temperature and high pressure water corrosion for the packer rubber.