基于ZSM-5型沸石-水系统的封隔器胶筒材料密封性能研究  

Study on Sealing Performance of a Packer Rubber Material Based on ZSM-5 Zeolite-Water System

作　　者：章娅菲 窦益华[1] 罗睿 ZHANG Yafei;DOU Yihua;LUO Rui(School of Mechanical Engineering,X i’a n Shiyou University,X i’a n Shaanxi 710065,China;Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an Shaanxi 710054,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]西安热工研究院有限公司,陕西西安710054

出　　处：《润滑与密封》2018年第10期12-17,22,共7页Lubrication Engineering

基　　金：陕西省自然科学基础研究计划(2017JQ5108);陕西省教育厅专项科研计划项目(17KJ0594);国家自然科学基金项目(51674199)

摘　　要：为解决高温高压井中封隔器胶筒的失效问题,提高封隔器胶筒密封性能,提出一种基于纳米流控系统的封隔器胶筒材料。以蜂窝状结构为支撑骨架,在蜂窝内包覆憎水性纳米多孔介质与非浸润性功能流体的混合物,制备一种封隔器胶筒材料,该封隔器胶筒材料可随着外压的增大/减小,通过体系内液体流入/流出多孔材料孔道来调节自身体积变化,平衡外界压变。以ZSM-5型沸石-水系统为填充介质,实验获得不同环境温度下ZSM-5型沸石-水基封隔器胶筒材料的压力-体积变化关系。结果表明,当环境温度在30～75℃范围内变化时,随着温度的提升,该封隔器胶筒材料的上压力阈值减小、下压力阈值增大,服役时的压力将稳定在更小区间范围内;其有效变形能力也将随着温度的升高而增大,体现出良好的密封性能,可减小油套环空密封失效风险。In order to solve the failure problem of packer rubber in high temperature and high pressure well and improve its sealing performance,a kind of packer rubber material based on the nanofluidic system was proposed.The designed packer rubber material is supported by a kind of honeycomb skeleton inside which the mixture of a hydrophobic nanoporous medium and a kind of nonwetting liquid is encapsulated.The prepared sealing material can adjust its volume through the encapsulated liquid flow in and out of the nanochannels in the system to balance the external pressure change.Using ZSM-5 zeolite-water system as filling medium,the pressure-volume changing characteristics of the packer rubber material based on ZSM-5 zeolite-water system at different environmental temperature were obtained.Results show that when the environmental temperature changes in the range from 30℃to 75℃,the upper pressure threshold pressure is increased and the lower threshold pressure is decreased with the ascension of temperature.The stress of service will stabilize in a more intercellular range and the effective deformation capacity will also increase with the lift of temperature.The unique sealing performance of the new packer rubber material can help to reducing the risk of sealing failure of the annulus between the tubing and the casing.

关 键 词：封隔器胶筒 ZSM-5型沸石 压力-体积特性 密封性能 

分 类 号：TB931[一般工业技术—计量学] TB42[机械工程—测试计量技术及仪器]