由于胶筒位于套管内部 ,周围有油和水 ,工作环境极复杂 ,无法用直接测量或数值法得到挤压应力 .作者利用电测法测出套管外壁应变 ,再结合有限元法 ,由测得的应变反算出封隔器胶筒与套管之间的挤压应力 .结果表明 ,成功地为研究胶筒封隔器的工作状态提供了有效方法 ,并可为优化设计提供有价值的数据 Because the rubber cartridge is located inside the sleeve and surrounded by oil and water, the working environment is very complicated and can not be directly measured or numerically obtained compressive stress.The author uses the electrical measurement method to measure the strain of the outer wall of the sleeve, combined with the finite element method, The measured strain inversely calculates the compressive stress between the packer cartridge and the casing.The results show that it is an effective method to study the working condition of the cartridge packer and can provide valuable data