Numerical simulation of throttling effect on throttle valve at well bottom hole

被引：0
|
作者：
Zhou J. [1 ,2 ]
Zhang Y. [3 ,4 ]
Xiong Z. [3 ,4 ]
Shang J. [5 ]
机构：
[1] MOE Key Laboratory of Petroleum Engineering in China University of Petroleum (Beijing), Beijing
[2] State Key Laboratory of Petroleum Resources and Prospecting in China University of Petroleum (Beijing), Beijing
[3] College of Mechanical and Transportation Engineering in China University of Petroleum (Beijing), Beijing
[4] Beijing Key Laboratory of Process Fluid Filtration and Separation Technology in China University of Petroleum (Beijing), Beijing
[5] China Petroleum Materials Company Limited, Beijing
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2021年 / 45卷 / 06期
关键词：
Coalbed methane; Joule-Thomson coefficient; Natural gas hydrate; Temperature drop; Throttling effect;
D O I：
10.3969/j.issn.1673-5005.2021.06.017
中图分类号：
学科分类号：
摘要：
In the process of coalbed methane exploitation, a throttle valve was set to reduce the pressure and control the flow. However, if the temperature drops after throttling, and it is easy to form natural gas hydrate under certain conditions. To obtain the conditions when the natural gas hydrate is formed after coalbed methane throttling through throttles valve, the effects of such parameters including the throttling ratio and inlet pressure, on the throttling effect were studied by numerical simulation method. The results show that, when the inlet pressure is within the scope of 1, 2, 3, 4, 5 and 6 MPa and the throttling ratio is a constant, the pressure drop and temperature drop increase with the increase of the inlet pressure, and the Joule-Thomson coefficient decreases with the increase of the inlet pressure. When the inlet pressure is a constant, the pressure drop and temperature drop decrease with the increase of throttling ratio. When the inlet pressure is greater than 5 MPa, it is easy to form natural gas hydrate. © 2021, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.
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页码：144 / 151
页数：7
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