| 气井井下节流工艺的数值模拟 |
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| 引用本文： | 刘亮,王岳,李朝阳,罗凯,高岩. 气井井下节流工艺的数值模拟[J]. 北京石油化工学院学报, 2011, 0(3): 4-8 |
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| 作者姓名： | 刘亮 王岳 李朝阳 罗凯 高岩 |
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| 作者单位： | 辽宁石油化工大学石油天然气工程学院; |
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| 摘 要： | 基于CFD理论并应用CFD软件建立了简化的全井段天然气井井下节流工艺的物理模型。考虑到地温梯度对井筒温度的作用,编写了关于温度梯度的UDF程序,对井下全井段流场与温度场进行了数值模拟。得到了井下气体温度、压强、流速关于井深的分布曲线并对节流处的参数变化进行分析。通过模拟发现,节流前后的温降较大,温度在节流口出口附近存在最小值。地热对节流后天然气起到了加温作用;模拟结果证实了井下节流工艺具有保温的特点,为合理确定节流嘴下入深度,使节流后天然气温度高于节流后压力下水合物生成温度,从而为预防水合物生成提供了一定的理论依据。
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| 关 键 词： | CFD 节流工艺 数值模拟 水合物 |
A Numerical Simulation of the Throttling Technique of Natural Gas in the Subsurface Gas Well |
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| Liu Liang Wang Yue Li Zhaoyang Luo Kai Gao Yan. A Numerical Simulation of the Throttling Technique of Natural Gas in the Subsurface Gas Well[J]. Journal of Beijing Institute of Petro-Chemical Technology, 2011, 0(3): 4-8 |
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| Authors: | Liu Liang Wang Yue Li Zhaoyang Luo Kai Gao Yan |
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| Affiliation: | Liu Liang Wang Yue Li Zhaoyang Luo Kai Gao Yan(College of Petroleum and Natural Gas Engineering,Liaoning University of Petroleum & Chemical,Fushun 113001,China) |
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| Abstract: | Based on the CFD theory,a simplified physical model of the throttling technique of natural gas in the subsurface gas well is established with the CFD software.Considering the influence of the temperature gradient on the wellbore temperature,the present author writes a UDF program concerning temperature gradient to simulate the temperature field and flow field of the whole gas well in the subsurface gas well.As a result,the gas temperature,pressure,velocity,and the distribution curve of the well depth are ac... |
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| Keywords: | CFD throttling technique numerical simulation hydrate |
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