| 油井水泥腐蚀的能谱分析研究 |
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| 引用本文： | 廖刚,杨远光,陈大钧.油井水泥腐蚀的能谱分析研究[J].西南石油大学学报（自然科学版）,1998,20(3):72-74. |
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| 作者姓名： | 廖刚 杨远光 陈大钧 |
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| 作者单位： | 1.西南石油学院化学工程系,四川南充637001 2.石油工程系 3.化学工程系 |
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| 摘 要： | 将水泥石在含有不同离子成份的腐蚀液中浸泡,用能谱仪测定了腐蚀后水泥石中各元素的含量。发现,氯离子、硫酸根离子能渗入到水泥石内部深处;在水泥浆中加入硅灰,这种作用明显减弱;在上述两种水泥石内部,镁离子的含量均无明显变化。指出,硫酸根离子在水泥石内的扩散不完全是物理扩散,也有化学扩散;要防止硫酸根离子的侵蚀,改变水泥水化产物的组成是关键;要防止镁离子的侵蚀,水泥石不应有缺陷。
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| 关 键 词： | 油井水泥 腐蚀 能谱 分析 |
| 收稿时间： | 1998-02-20 |
A Study of Corrosion of Oil Well Cement with Energy Spectrum Analysis |
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| Liao Gang Yang Yuan-guang,Chen Da-jun.A Study of Corrosion of Oil Well Cement with Energy Spectrum Analysis[J].Journal of Southwest Petroleum University(Seience & Technology Edition),1998,20(3):72-74. |
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| Authors: | Liao Gang Yang Yuan-guang Chen Da-jun |
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| Institution: | ( Dept. of Chemical Engineering, SWPI,Sichuan, 637001 ) |
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| Abstract: | Two samples of oil well cement ( one was added with silica fume and the other was not ) were soaked in aqueous solutions containing different ions, andthe resultant element concentrations within the sam-ples were determined with energy spectrometry. It was found that Cl - and SO42 - had seeped intothe cement while Mg2 + had not, and silica fume can hinder diffusion of the ions. It is pointed out in this paper that the diffusion of SO42 - ions withinthe cement is not only a physical but also a chemical process. The key to prevent corrosion by SO42 - is to change the composition of the resulting hydrated product. |
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| Keywords: | Oil well cement Corrosion Energy spec-trometry Composition Diffusion |
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