| 输气管道水化物堵塞的预防和处理 |
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| 引用本文： | 田玉宝,阎振奎.输气管道水化物堵塞的预防和处理[J].油气储运,2001,20(5):34-36. |
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| 作者姓名： | 田玉宝 阎振奎 |
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| 作者单位： | 中国石油天然气管道局廊坊输油气公司 |
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| 摘 要： | 阐述了输气管道内水化物的成因，特性及游离水的来源，并对其进行了分析，根据分析结果，给出了预测管道内水化物形成区域的方法，提出了三项预防水化物的措施，（1）施工阶段避免过多使用弯管，（2）投产前增加吹扫次数，彻底清除水，（3）运行初期定期注入抑制剂，指出对已形成水化物的管道段，可采取尽快降低运行压力，加热，注醇和放空等措施进行处理。
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| 关 键 词： | 输气管道 水化物 特性 堵塞处理 加热 注醇 放空 预防 |
Precautionary Measures to Prevent Natural Gas Hydrates in Pipe from Blocking |
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| Tian Yubao,Yan Zhenkui.Precautionary Measures to Prevent Natural Gas Hydrates in Pipe from Blocking[J].Oil & Gas Storage and Transportation,2001,20(5):34-36. |
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| Authors: | Tian Yubao Yan Zhenkui |
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| Institution: | Tian Yubao and Yan Zhenkui |
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| Abstract: | The origins and behaviors of natural gas hydrates formed in pipeline are described and analyzed. Based on analytical results,a method to predict the formation zone of natural gas hydrates is given. Three precautionary measures to prevent natural gas hydrates in pipe from blocking are put forward ,that is,not to used bending pipe if possible during construction stage;increasing pigging frequency before pipeline commissioning to elimninate water within pipe;injecting inhibitor in regular way. For the pipe section with natural gas hydrates formed,several effective methods to treat NGH are suggested to use,that is ,depressurizing as fast as possible;heating the pipe;injecting methanol/ethylene glycol and venting. |
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| Keywords: | gas transmission pipeline natural gas hydrate behavior analysis prevention treat-ment |
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