| 煤层气井气体对有杆泵排采的影响 |
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| 引用本文： | 刘新福,吴建军,綦耀光,赵培华.煤层气井气体对有杆泵排采的影响[J].中国石油大学学报(自然科学版),2011,35(4):144-149. |
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| 作者姓名： | 刘新福 吴建军 綦耀光 赵培华 |
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| 作者单位： | 1. 中国石油大学机电工程学院,山东东营,257061
2. 中石油煤层气有限责任公司,北京,100011 |
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| 基金项目： | 国家科技重大专项课题，山东省科技发晨计划项目，中层石油大学(华东)研究生创新基金 |
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| 摘 要： | 依据气液两相流理论,建立煤层气井气水两相井液进泵运动规律的数学模型,给出适应于煤层气井泵充满度的算法,通过求解井液进泵的数值模型及仿真分析,得到煤层气井不同工况下抽油泵内液面和泵充满度的瞬时动态变化规律,以及泵充满度与冲次、泵入口气液比、泵入口压力等参数间的相互关系。利用余隙容积系数与泵内压强的关系和气体压缩膨胀的多变特性,分析出低沉没度下泵发生气锁的条件并给出预防措施。结果表明:降低冲次、减小余隙容积和泵入口气液比以及增大沉没压力可以有效提高泵的充满度,而且泵入口气液比对泵效的影响尤为显著;考虑抽油泵余隙内自由气体的作用后,随着余隙容积系数的增加,泵的充满度逐渐降低。
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| 关 键 词： | 煤层气井 有杆泵 充满度 气水两相流 仿真分析 |
Effect of gas on sucker rod pump for coalbed methane well |
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| LIU Xin-fu,WU Jian-jun,QI Yao-guang,ZHAO Pei-hua.Effect of gas on sucker rod pump for coalbed methane well[J].Journal of China University of Petroleum,2011,35(4):144-149. |
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| Authors: | LIU Xin-fu WU Jian-jun QI Yao-guang ZHAO Pei-hua |
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| Institution: | LIU Xin-fu1,WU Jian-jun2,QI Yao-guang1,ZHAO Pei-hua2 (1.College of Mechanical and Electronic Engineering in China University of Petroleum,Dongying 257061,China,2.PetroChina Coalbed Methane Company Limited,Beijing 100011,China) |
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| Abstract: | The mathematical model of gas and water two phase flow was developed,and the calculation method of volumetric efficiency was obtained for sucker rod pumps on the basis of the two phase flow theory in coalbed methane(CBM) wells.The variation of dynamic fluid level and volumetric efficiency under different operating conditions and the relationships of volumetric efficiency with stroke,inlet gas-liquid ratio and inlet pressure of the pump,were developed based on the numerical solution and simulation analysis o... |
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| Keywords: | coalbed methane well sucker rod pump volumetric efficiency gas and water two phase flow simulation analysis |
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