摘要
通过室内模拟工况试验和现场实际服役环境试验,以及涂层的基本性能分析,对一种环氧涂层(HY01)油管室内模拟工况与实际服役环境适用性进行了对比研究,建立了该类型环氧涂层在注水工况环境中的失效机理模型。结果表明所研究的油管用HY01型涂层表面较为平整,不存在流淌等缺陷,涂层附着力良好,但涂层厚度不均,最薄处仅为86.8μm。在90℃的高温高压模拟工况试验中,HY01型涂层发生鼓泡。现场试验中,环境温度约40℃的井下位置服役5年的HY01型涂层表面完好,未出现起泡、开裂和剥落现象;环境温度约102℃的位置服役5年的HY01型涂层表面发生大面积起泡、开裂,甚至剥落;涂层严重老化,已失去防护性能。HY01型涂层失效的主要原因是高温老化。
The adaptability of the epoxy coating tubing was investigated by laboratory experiment test and actual service environment test, and the failure modes of epoxy coatings served in the water injection environment were established. The results indicated thai no flow defect was observed on the surface of the epoxy coatings. The coating performed good adhesion, but the coating thickness is oneven, and the thin- nest part is only 86.8 μm. blisters were observed on the surface of the epoxy coating after high temperature and high pressure experiment at 90 ℃. The epoxy coating showed excellent corrosion resistance in the water injection wells service for 5 years at about 40 ℃, no blisters, cracking and spalling was observed ; however, obvious blisters, cracking and spalling of the epoxy coating were occun＇ed in the walcr injection wells service for 5 years at about 102 ℃. The main reason for the failure of the epoxy coating is high temperature aging.
出处
《石油管材与仪器》
2017年第5期36-39,共4页
Petroleum Tubular Goods & Instruments
基金
中国石油天然气集团公司基础研究和战略储备技术研究基金项目“石墨烯技术在油管表面处理中的应用基础研究”(项目编号:2017Z-04)
关键词
环氧涂层
服役环境
失效模型
注水
epoxy coating
service environment
failure model
water injection
