压缩式封隔器密封胶筒有限元分析及改进

摘要

针对常规压缩式封隔器密封胶筒存在的问题,对常规型和改进型封隔器胶筒在不同坐封载荷下的接触应力进行对比分析,以提高封隔器下井安全性、工作稳定性和密封可靠性.结果表明:改进后的新型压缩式封隔器胶筒比常规封隔器胶筒具有更高的承压能力,使管柱的下井安全性能大幅提高,满足了现场操作需求,提高了下井成功率.%Aiming at the failure existing in compressed rubber seal packing,the analysis and comparison have been made at the condition of seat load and contact stress for the conventional and improved packing to increase security, stability and reliability during tripping down. The result showed that the improved packing,with compressed rubber seal packing,could hold higher pressure and the security was greatly increased during tripping down to meet the requirement of onsite operation.