地下储气库SM-80S钢管柱冲蚀-CO2腐蚀耦合实验研究OA
Experimental Study on the Coupling of Erosion and CO2 Corrosion of SM-80S Steel Pipe String in Underground Gas Storage
通过气液固三相可视化管流式冲蚀-腐蚀耦合实验,针对SM-80S钢管柱开展冲蚀-CO2 腐蚀耦合规律研究.研究发现:1)SM-80S试样在低气流速条件下受到砂粒的微切削摩擦作用,在高气流速条件下受到砂粒的冲击变形、犁割等多种作用;2)在含CO2 的酸性气体环境中,SM-80S钢试样表面腐蚀产物的硬度远低于试样原本硬度,而且在CO2 分压大于0.4 MPa的条件下,其冲蚀-CO2腐蚀速率(即E-C速率)比单纯冲蚀条件下的冲蚀速率提高了 3 倍有余;3)在高气流速条件下,SM-80S钢试样表面腐蚀产物会被快速剥离,试样基体表面无法形成完整且稳定的腐蚀产物膜.
Based on the gas-liquid-solid three-phase visualized pipe flow erosion-corrosion experiment,this study investigates the coupling mechanism of erosion and CO2 corrosion in SM-80S steel pipe strings.The findings reveal the following:1)Under low gas flow velocity conditions,the SM-80S steel specimen was subjected to micro-cutting friction by sand particles,while under high gas flow velocity conditions,it experienced multiple effects including impact deformation and ploughing by sand particles;2)In an acidic gas environment containing CO2,the hardness of corrosion products on the surface of the SM-80S steel specimen was significantly lower than the original hardness of the specimen.Moreover,when the CO2 partial pressure exceeded 0.4 MPa,the erosion-corrosion(E-C)rate was more than three times higher than the erosion rate under pure erosion conditions;3)Under high gas flow veloc-ity conditions,corrosion products on the surface of the SM-80S specimen were rapidly removed,preventing the for-mation of a complete and stable corrosion product film on the specimen's substrate surface.
邓兴旺;谢川;王云;黄小亮;朱窈佳
重庆科技大学 石油与天然气工程学院,重庆 401331重庆科技大学 石油与天然气工程学院,重庆 401331中国石油勘探开发研究院,北京 100083重庆科技大学 石油与天然气工程学院,重庆 401331重庆科技大学 石油与天然气工程学院,重庆 401331
能源科技
地下储气库SM-80S钢管柱气液固三相冲蚀-CO2腐蚀
gas storageSM-80S steel pipe stringgas-liquid-solid three-phaseerosion-CO2 corrosion
《重庆科技大学学报（自然科学版）》 2026 (1)
9-16,8
国家科技重大专项"储气库高效运行与智能调峰技术研究"(2025ZD1406806)重庆市教委科学技术研究计划重大项目"水驱气藏型储气库多周期注采渗流机理及库容参数变化研究"(KJZD-M202401501)重庆科技大学研究生创新计划项目"地下储气库复杂注采工况下P110管柱冲蚀机理研究"(YKJCX2420122)
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