| 林冠发,雷丹,侯永宾,宋成立,蔡锐.油田用钨合金镀层腐蚀性能评价研究[J].装备环境工程,2019,16(9):69-73. LIN Guan-fa,LEI Dan,HOU Yong-bin,SONG Cheng-li,CAI Rui.Evaluation on Corrosion of Tungsten Alloy Coating in Oilfield[J].Equipment Environmental Engineering,2019,16(9):69-73. |
| 油田用钨合金镀层腐蚀性能评价研究 |
| Evaluation on Corrosion of Tungsten Alloy Coating in Oilfield |
| 投稿时间：2019-04-08 修订日期：2019-06-13 |
| DOI：10.7643/issn.1672-9242.2019.09.012 |
| 中文关键词: 钨合金镀层 腐蚀 高温高压 油管 |
| 英文关键词:tungsten alloy coating corrosion high temperature and high pressure oil tube |
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| Author | Institution |
| LIN Guan-fa | CNPC Key Laboratory for Oil Tubular Goods Engineering, Xi′an 710077, China |
| LEI Dan | Xi′an Maurer Petroleum Engineering Laboratory Co., Ltd, Xi′an 710065, China |
| HOU Yong-bin | Oil and Gas Engineering Research Institute, Tarim Oilfield Company, Korle 841000, China |
| SONG Cheng-li | CNPC Key Laboratory for Oil Tubular Goods Engineering, Xi′an 710077, China |
| CAI Rui | CNPC Key Laboratory for Oil Tubular Goods Engineering, Xi′an 710077, China |
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| 中文摘要: |
| 目的 评价钨合金镀层油管的腐蚀性能。方法 利用高压釜模拟高压气井和高含硫气井的腐蚀环境，进行高压高温腐蚀试验，以及标准的氢致开裂(HIC)和硫化氢应力腐蚀试验。采用电子扫描显微镜(SEM)及其能谱仪(EDS)和X射线衍射分析仪(XRD)，分析或检测钨合金镀层和基管的腐蚀形貌、腐蚀产物的组成。结果 油管表面的钨合金镀层平整而致密，其主要组成元素为W和Ni。高温高压腐蚀试验后，镀层仍然致密平整，腐蚀程度轻微。在60、90、120、140 ℃试验7天时，镀层和基材的H2S/CO2腐蚀速率分别为0.0179、0.0093、0.0102、0.0369 mm/a和1.030、1.272、1.183、0.991 mm/a。试验30天，在120 ℃时，其H2S/CO2腐蚀速率分别为-0.0085、0.1789 mm/a；在160 ℃时，其CO2腐蚀速率分别为0.0091、0.8976 mm/a。该钨合金镀层均通过了标准的氢致开裂和硫化氢应力腐蚀试验。结论 该钨合金镀层具有很好的耐腐蚀性能。 |
| 英文摘要: |
| Objective To evaluate resistance corrosion of tungsten alloy coating on oil tube. Methods The simulation corrosion tests of the tungsten alloy coating on oil tube were completed under high temperature and high pressure in autoclave, Hydrogen Induced Cracking (HIC) and Hydrogen Sulfide Stress Corrosion (SSC) for the coating oil tube were carried out according to standard test method, and the morphologies and compositions of corrosion product on the coating and the substrate were observed with Scanning Electron Microscope (SEM), Energy Dispersive Spectrometer (EDS) and X-Ray Diffraction (XRD). Results The tungsten alloy coating consisted mainly of W, Ni elements was smooth and dense, the coating after high temperature and pressure corrosion test was still kept the same as that before the test, and light corrosion occurred on the surface of the coating. The corrosion rates of the coatings and the substrate in H2S and CO2 environments at 60 ℃, 90 ℃, 120 ℃ and 140 ℃ for 7 days were respectively 0.0179 mm/a, 0.0093 mm/a, 0.0102 mm/a, 0.0369 mm/a and 1.030 mm/a, 1.272 mm/a, 1.183 mm/a, 0.991 mm/a. The two rates in H2S and CO2 environments at 120 ℃ for 30 days were respectively -0.0085 mm/a and 0.1789 mm/a, the two rates in only CO2 environment at 160 ℃ for 30 days were respectively 0.0091 mm/a and 0.8976 mm/a. The tests of anti-hydrogen induced cracking and anti-hydrogen sulfide stress corrosion were up to standard. Conclusion The tungsten alloy coating has good resistance corrosion. |
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