| 煤层气井排采煤粉浓度预警及防控措施 |
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| 引用本文： | 刘升贵,胡爱梅,宋波,李惠芳. 煤层气井排采煤粉浓度预警及防控措施[J]. 煤炭学报, 2012, 37(1): 86-90 |
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| 作者姓名： | 刘升贵 胡爱梅 宋波 李惠芳 |
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| 作者单位： | 中国矿业大学(北京) 力学与建筑工程学院，北京 100083 |
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| 基金项目： | 国家科技重大专项基金资助项目（2009ZX05038-002,2011ZX05038-001） |
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| 摘 要： | 为了解决煤层气井排采受煤粉干扰，造成产气量波动甚至频繁卡泵的问题，分析了煤层气井煤粉来源及产生机理。基于鄂尔多斯盆地煤层气井监测数据，确定了示范区煤粉浓度预警指标；针对煤粉产出的阶段变化特征，提出了螺杆泵接防砂尾管结合油套环空注水稀释煤粉浓度的防控措施。现场使用效果表明，该措施能降低进入生产井的煤粉浓度，延长煤层气排采井检泵周期。
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| 关 键 词： | 煤层气 水平井 煤粉浓度 卡泵 |
| 收稿时间： | 2011-02-24 |
Coal powder concentration warning and control measure during CBM well drainage |
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| LIU Sheng-gui,HU Ai-mei,SONG Bo,LI Hui-fang. Coal powder concentration warning and control measure during CBM well drainage[J]. Journal of China Coal Society, 2012, 37(1): 86-90 |
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| Authors: | LIU Sheng-gui HU Ai-mei SONG Bo LI Hui-fang |
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| Affiliation: | 1(1.School of Mechanics & Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;2.PetroChina Coalbed Methane Company Limited,Beijing 100028,China) |
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| Abstract: | In order to solve the problem of coal powder interference in coalbed methane(CBM) well drainage,which causes gas production fluctuation even stuck pump frequently,the source and form mechanism of coal powder were analyzed.Based on the monitoring data of CBM well in Ordos Basin,the coal powder concentration warning index was presented.Sieve tube were used to avoid large particle get into pump,and water were injected from tubing-casing annular space to dilute coal powder concentration.The field application results demonstrate the coal powder control measure can reduce the coal powder concentration into production well,and can extend the pump inspection cycle of CBM well. |
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| Keywords: | coalbed methane(CBM) horizontal well coal powder concentration stuck pump |
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