马文祺,王勤英,宋宇辉,符昌友,张兴寿,罗晓芳,西宇辰,董立谨,张华礼,张智.P110钢冲刷腐蚀预测模型的构建及其机理研究[J].表面技术,2024,53(10):110-123.
MA Wenqi,WANG Qinying,SONG Yuhui,FU Changyou,ZHANG Xinshou,LUO Xiaofang,XI Yuchen,DONG Lijin,ZHANG Huali,ZHANG Zhi.Construction and Corrosion Mechanism of Erosion-corrosion Prediction Model for P110 Steel[J].Surface Technology,2024,53(10):110-123 |
| P110钢冲刷腐蚀预测模型的构建及其机理研究 |
| Construction and Corrosion Mechanism of Erosion-corrosion Prediction Model for P110 Steel |
| 投稿时间：2023-06-14 修订日期：2023-09-13 |
| DOI：10.16490/j.cnki.issn.1001-3660.2024.10.008 |
| 中文关键词: P110钢 冲刷腐蚀 高温高压 机器学习 随机森林 |
| 英文关键词:P110 steel erosion corrosion high temperature and pressure machine learning random forest |
| 基金项目:国家自然科学基金(52174007);四川省省院省校项目(2023YFSY0017) |
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| Author | Institution |
| MA Wenqi | School of New Energy and Materials,Chengdu 610500, China |
| WANG Qinying | School of New Energy and Materials,Chengdu 610500, China |
| SONG Yuhui | School of New Energy and Materials,Chengdu 610500, China |
| FU Changyou | School of New Energy and Materials,Chengdu 610500, China |
| ZHANG Xinshou | School of New Energy and Materials,Chengdu 610500, China |
| LUO Xiaofang | School of New Energy and Materials,Chengdu 610500, China |
| XI Yuchen | School of New Energy and Materials,Chengdu 610500, China |
| DONG Lijin | School of New Energy and Materials,Chengdu 610500, China |
| ZHANG Huali | Engineering Technology Research Institute, PetroChina Southwest Oil & Gas field Company, Sichuan Guanghan 618300, China |
| ZHANG Zhi | Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China |
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| 中文摘要: |
| 目的 探究高温高压环境下P110钢在不同冲刷速度和角度下的腐蚀行为规律，揭示其冲刷腐蚀机理，建立腐蚀预测模型，以期指导油气田材料腐蚀防护与腐蚀预测。方法 采用电化学工作站和高温高压反应釜，开展高温高压冲刷腐蚀实验。采用金相显微镜、扫描电子显微镜、X射线衍射仪等对冲刷腐蚀前后材料的微观组织结构、化学成分及物相进行表征。此外，通过调研文献数据，基于随机森林(Random Forest，RF)算法构建了P110钢的冲刷腐蚀预测模型，并开展了预测准确性研究。结果 在3 m/s的冲刷速度下，随着冲刷角度的增加，自腐蚀电流密度由30°的2.19×10−4 A/cm2降低到90°的1.449×10−4 A/cm2。在30°的冲刷角下，随着冲刷速度的增加，自腐蚀电流密度由0 m/s的6.30×10−5 A/cm2增加到3 m/s的2.19×10−4 A/cm2。腐蚀产物具有双层膜结构，外层主要由FeCO3组成，内层主要为Fe2O3。腐蚀预测模型分析结果表明:温度对P110钢的腐蚀速率影响程度最大，其次是CO2和冲刷速度。结论 在高温高压环境下，P110钢能够产生Fe2O3和FeCO3的双层腐蚀产物膜，随着冲刷速度的增加和角度的降低，腐蚀产物膜完整性破坏，腐蚀加剧。腐蚀预测模型具有良好的性能，能够有效预测腐蚀速率。 |
| 英文摘要: |
| As a common oil well pipe material in the oil and gas industry, P110 steel is prone to erosion corrosion at high temperature, high pressure, and high salinity flowing media, which threatens the safety of oil and gas development. |
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