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耐温度合金牺牲阳极和不同温度的外管的腐蚀研究

Mifeng Zhao¹, Shaobo Feng¹, Fangting Hu¹

¹Oil and Gas Engineering Research Institute, Tarim Oilfield Company of CNPC, Korla 841000, China.

Materials (Basel, Switzerland)

|November 25, 2023

概括

一个新的合金牺牲阳极有效地保护油气田的深井外免受高温腐蚀. 这种材料在模拟下孔条件下显著降低TP140外的腐蚀率.

科学领域:

材料科学材料科学材料科学
腐蚀工程腐蚀工程
石油工程是石油工程中的一个.

背景情况:

油气田的深井外在高温和高压条件下容易受到严重的外部腐蚀.
现有的保护方法可能不足以应对深井中遇到的极端环境.
开发用于外保护的先进材料对于操作完整性和寿命至关重要.

研究的目的:

评估一种新型的耐高温合金作为保护TP140深井外的牺牲阳极.
在模拟油田条件下研究新阳极材料和外的温度和耐腐蚀性.
为了确定牺牲阳极在减轻外腐蚀速率方面的有效性.

主要方法:

建立了模拟的高温和高压深井条件.
进行了高温和高压腐蚀试验.
进行了电化学测试,包括动态电位偏振.
测量和分析了腐蚀速率和电化学潜力.

主要成果:

与未受保护条件相比,牺牲阳极在100-120°C时将TP140外的腐蚀率降低了大约90%.
保护TP140外所取得的最低腐蚀率在100°C时为0.0089mm/a.
TP140的腐蚀电流密度和阳极的自我腐蚀潜力显示出与温度的非线性关系,在更高的温度下,阳极和外之间的潜在差异下降.

结论:

开发的耐高温合金是一种可行且有效的牺牲阳极,用于保护油气田的深井外.
牺牲阳极显著提高了TP140外在要求深孔热和压力环境下的耐腐蚀性.
这种材料为延长使用寿命和提高深井基础设施可靠性提供了有前途的解决方案.

关键词:

这就是SEM SEM.腐蚀腐蚀是一种腐蚀.耐高温耐高温耐高温耐高温极化曲线的极化曲线牺牲阳极是一种牺牲阳极.合金是合金中的一种.

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