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《Journal of Chengde Petroleum College》 2012-03
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Application of Shape Memory Alloy in Packer

AN Shao-yun,LIU Chun-zhe,HAN Guang-ming(Department of Mechanical Engineering,Chengde Petroleum College,Chengde 067000,Hebei,China)  
In general,self-sealing packer using rubber as sealing material cannot work in high temperature,and its service life-span is short.To take advantage of the properties of shape memory alloy,it is possible to use shape memory alloy as sealing part(sealing ring) of packer,and put packer into the predetermined site when the temperature is low.The sealing ring resumes automatically when the temperature rises to the point of Af,and the stress produced in expansion causes the sealing ring reach the wall of oil well,so that it can seal the oil well.Making use of the response of shape memory alloy when temperature changes,we can simplify the structure of products,reduce the difficulty of sealing or releasing,meet the need of high temperature,and raise the service life-span of products.
【Fund】: 河北省科技支撑计划项目(应用镍钛智能材料研制开发高性能油井封隔器):10215149
【CateGory Index】: TG139.6;TE931.2
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