分流封隔器皮碗的性能分析及参数优化

分流封隔器是刮管冲砂技术中最重要的工具，直接影响到冲砂洗井的效率。针对分流封隔器皮碗极易出现撕裂和磨损问题，开展皮碗力学特性研究。采用有限元法与试验相结合的方法，研究推筒外径和底径、皮碗水平距离和内外径对分流封隔器密封性能的影响，优化皮碗总成结构参数。结果表明：影响皮碗密封的主要因素依次是皮碗的外径、内径、水平距离、推筒的底径和外径；最优结构参数组合是推筒外径192 mm、底径188 mm、皮碗内径185 mm、外径216 mm、水平距离46 mm。优化后试验表明，皮碗满足外径244.5 mm套管使用要求，以及皮碗静密封承压20 MPa和动密封承压10 MPa的技术要求，整体性能得到提升，验证了有限元仿真分析的准确性。研究结果可为分流封隔器整体性能改进和应用提供参考。

Performance Analysis and Parameter Optimization of Splitter Packer Cup

The splitter packer is the most important tool in the sand scraping and flushing technology,which directly affects the efficiency of sand flushing and well washing.In view of the problem that the cups of the splitter packer is prone to tearing and wear,the study on the mechanical characteristics of the cups was carried out.Using a combination of finite element method and experiments,the effects of the outer and bottom diameters of the push cylinder,the horizontal distance and inner and outer diameters of the cup on the sealing performance of the splitter packer were studied,and the structural parameters of the cup assembly were optimized.The results show that the main factors affecting the cup seal are the outer diameter,inner diameter,horizontal distance of the cup,bottom diameter and outer diameter of the push cylinder in order.The optimal structural parameters are 192 mm outer diameter of the push cylinder,188 mm bottom diameter,185 mm inner diameter of the cup,216 mm outer diameter and 46 mm horizontal distance.The test results show that the optimized cup meets the using requirements of 244.5 mm casing,and the static seal pressure of 20 MPa and dynamic seal pressure of 10 MPa.The overall performance is improved and the accuracy of finite element simulation analysis is verified.The results of the study can provide reference for the overall performance improvement and application of the splitter packer.