玉门油田某区块地面集输流程腐蚀因素与机理研究
孙铭辰 , 李艳琦 , 张恒 , 潘彬 , 薛新茹 , 熊金山 , 信延彬
现代化工 ›› 2026, Vol. 46 ›› Issue (S2) : 259 -263.
玉门油田某区块地面集输流程腐蚀因素与机理研究
Corrosion factors and mechanisms in the surface gathering and transportation system of Yumen oilfield
玉门油田某区块地面集输管道腐蚀失效问题突出,威胁安全生产并造成环境风险。以该区块联合站三相分离器水样为介质,采用电化学测试、扫描电镜、X射线衍射等表征手段,针对温度、H2S含量、含水量、含蜡量及胶质含量开展腐蚀定量分析。结果表明,20#钢腐蚀主控因素为含水量,影响权重依次为H2S含量、含蜡量、胶质含量、温度。管道存在CO2、H2S复合腐蚀,腐蚀产物结构疏松。区块集输系统腐蚀类型涵盖CO2腐蚀、H2S/CO2共存腐蚀及垢下腐蚀,同时存在硫酸盐还原菌、铁细菌引发的微生物腐蚀。
Severe corrosion failure issues occur in the surface gathering and transportation pipelines of a block in Yumen Oilfield,posing threats to safe production and triggering environmental risks.Using water samples taken from the three-phase separator at the combined station of this block as the test medium,quantitative corrosion analyses were conducted with respect to temperature,H2S content,water cut,wax content and resin content via electrochemical measurements,scanning electron microscopy,X-ray diffraction and other characterization methods.The results reveal that water cut serves as the dominant controlling factor for the corrosion of 20# carbon steel,followed by H2S content,wax content,resin content and temperature in descending order of influence weight.The pipelines suffer from combined CO2-H2S corrosion with loose-structured corrosion products.The corrosion modes prevailing in the block’s gathering and transportation system include CO2 corrosion,synergistic H2S/CO2 corrosion and under-deposit corrosion,accompanied by microbiologically influenced corrosion induced by sulfate-reducing bacteria and iron bacteria.
地面集输工艺 / 腐蚀失效 / 正交实验 / 腐蚀因素 / 腐蚀机理
surface gathering and transportation system / corrosion failure / orthogonal experiments / corrosion factors / corrosion mechanisms
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国家自然科学基金(12575265)
中国石油天然气股份公司科研项目(YM2024-009)
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