| 煤层气水平井煤粉产生机理及控制措施 |
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| 引用本文： | 刘升贵,贺小黑,李惠芳. 煤层气水平井煤粉产生机理及控制措施[J]. 辽宁工程技术大学学报(自然科学版), 2011, 30(4): 508-512. DOI: 21-1379/N.20110826.1720.006 |
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| 作者姓名： | 刘升贵 贺小黑 李惠芳 |
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| 作者单位： | 1. 中国矿业大学力学与建筑工程学院,北京,100083
2. 中国科学院地质与地球物理研究所,北京,100029 |
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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： | 为了揭示煤层气水平井煤粉产生机理,采用理论分析和现场实验的方法,分析了煤层气水平井产出煤粉的质量分数及颗粒粒径变化规律,提出了使用防砂尾管结合油套环空注水稀释煤粉质量分数预防卡泵的措施。研究结果表明:煤层气水平井产出煤粉颗粒粒径呈阶段变化特征,煤粉质量分数超标是导致卡泵停机的主要原因,使用防砂尾管结合井底注水稀释煤粉质量分数措施能有效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 生产动态 煤粉 卡泵 |
Production mechanism and control measures of coal powder in coalbed methane horizontal well |
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| LIU Shenggui,HE Xiaohei,LI Huifang. Production mechanism and control measures of coal powder in coalbed methane horizontal well[J]. Journal of Liaoning Technical University (Natural Science Edition), 2011, 30(4): 508-512. DOI: 21-1379/N.20110826.1720.006 |
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| Authors: | LIU Shenggui HE Xiaohei LI Huifang |
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| Affiliation: | LIU Shenggui1,HE Xiaohei2,LI Huifang1(1.School of Mechanics & Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China,2.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | To reveal the production mechanism of coal powder in coalbed methane horizontal wells,the coal powder concentrations and particle size variations in coalbed methane horizontal wells are analyzed by combining theoretical analyses with field experiment.Also,the measures of using sand control liner combination of water injection in tube-casing annular space to dilute coal powder concentration is proposed for preventing pump stuck.The study results show that the stepped changes characteristic of coal powder par... |
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| Keywords: | coalbed methane horizontal well production performance coal powder stuck pump |
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