高激活温度形状记忆发泡材料及堵漏性能研究
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1.胜利石油工程有限公司钻井液技术服务中心;2.中石化胜利石油工程有限公司钻井液技术服务中心;3.北京化工大学;4.中国石油大学华东

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中石化股份有限公司研究项目《钻井液用合成基础油及体系研究与应用》(项目编号:P23115)


Research on high activation temperature shape memory foam sealing material and sealing performance
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    摘要:

    常规堵漏材料通常较难兼顾可形变和高承压的结构特质,因此粒级匹配和承压堵漏效果较差。而现有形状记忆堵漏材料虽然可在激活温度下形变,实现裂缝自适应封堵,但存在激活温度低、承压强度不足等问题,难以应对深层地质条件下严苛的温压环境。本研究选取环氧树脂单体,通过固化剂优选,研制了具备激活温度高、形状记忆性能好的发泡树脂材料,并对其承压堵漏性能和强化固壁效果进行了系统评价。评价结果表明,所制备的形状记忆发泡堵漏材料玻璃化转变温度达97℃,对天然裂缝性漏失具有良好的堵漏效果。利用高激活温度形状记忆发泡材料配制堵漏液可应用于裂缝性漏失堵漏井壁封堵,对拓宽安全密度窗口,降低事故和复杂具有非常好的意义。

    Abstract:

    Conventional leak sealing materials are often difficult to balance the structural characteristics of deformability and high pressure, resulting in poor particle size matching and pressure sealing effects. Although existing shape memory sealing materials can deform at activation temperature and achieve adaptive sealing of cracks, they have problems such as low activation temperature and insufficient compressive strength, making it difficult to cope with harsh temperature and pressure environments in deep geological conditions. This study selected epoxy resin monomers and developed foam resin materials with high activation temperature and good shape memory performance through the optimization of curing agents. The pressure sealing performance and wall strengthening effect were systematically evaluated. The evaluation results indicate that the prepared shape memory foam sealing material has a glass transition temperature of 97 ℃ and has a good sealing effect on natural crack leakage. The use of high activation temperature shape memory foam material to prepare leak stopping fluid can be applied to the sealing of fractured leak stopping wellbore walls, which has great significance in broadening the safety density window, reducing accidents and complexity.

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  • 收稿日期: 2024-09-19
  • 最后修改日期: 2024-12-11
  • 录用日期: 2024-12-15
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