硬质涂层膨胀锥减摩耐磨性能

发布时间：2018-09-01 20:16

【摘要】：为降低膨胀锥/膨胀管间摩擦阻力,提高膨胀锥耐磨损性能,制备了硬质涂层膨胀锥,研究了硬质涂层膨胀锥的性能,并对其进行了现场应用。采用超音速火焰喷涂技术在合金钢膨胀锥表面制备了碳化物硬质涂层,使膨胀锥表面硬度提高了近60%。摩擦磨损实验结果表明:锂基脂润滑条件下,硬质涂层使膨胀锥试块摩擦系数降低超过30%,磨损量降低约33%;水润滑条件下,硬质涂层使膨胀锥试块摩擦系数降低约25%;硬质涂层显著降低了膨胀锥和膨胀管间的摩擦阻力,减轻了磨损,增加了膨胀锥的使用寿命。现场应用结果表明:硬质涂层膨胀锥具有良好的耐磨损性能,应用4口井后涂层与膨胀锥基体结合良好,表面无明显磨损现象,成功完成现场套损井的修补作业。
[Abstract]:In order to reduce the friction resistance between the expansion cone and tube and improve the wear resistance of the expansion cone, the hard coating expansion cone was prepared. The properties of the rigid coating expansion cone were studied and applied in the field. A hard carbide coating was prepared on the expansion cone surface of alloy steel by supersonic flame spraying technology, which improved the hardness of the expansion cone surface by nearly 60%. The results of friction and wear experiments show that under the condition of lithium grease lubrication, the friction coefficient of the expansion cone specimen decreases by more than 30%, and the wear rate decreases by about 33% under the condition of water lubrication. The hard coating reduces the friction coefficient of the expansion cone by about 25 percent, and the hard coating reduces the friction resistance between the expansion cone and the expansion tube, reduces the wear, and increases the service life of the expansion cone. The field application results show that the hard coating expansion cone has good wear resistance. The coating and the expansion cone matrix are bonded well after the application of 4 wells, and there is no obvious wear phenomenon on the surface, so the repair operation of the casing damage well in the field has been successfully completed.
【作者单位】：中国石油勘探开发研究院;清华大学;
【基金】：中国石油集团公司科学研究与技术开发项目(2011B-1706,2014B-1706)
【分类号】：TE983

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