| 上升管中严重段塞流的流型和压力波动特性 |
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| 引用本文： | 罗小明,何利民,马华伟. 上升管中严重段塞流的流型和压力波动特性[J]. 中国化学工程学报, 2011, 19(1): 26-32 |
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| 作者姓名： | 罗小明 何利民 马华伟 |
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| 作者单位： | Department of Storage&Transportation Engineering, China University of Petroleum, Qingdao 266555, China |
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| 基金项目： | Supported by the National High Technology Research and Development Program of China(2006AA09Z302) |
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| 摘 要： | During the exploitation of offshore oil and gas, it is easy to form severe slugging which can cause great harm in the riser connecting wellheads and offshore platform preprocessing system. The flow pattern and pressure fluctuation of severe slugging were studied in an experimental simulation system with inner diameter of 0.051 m. It is found that severe slugging can be divided into three severe slugging regimes: regime I at low gas and liquid flow rates with large pressure fluctuation, intermittent flow of liquid and gas in the riser, and apparent cutoff of liquid phase, regime II at high gas flow rate with non-periodic fluctuation and discontinuous liquid outflow and no gas cutoff, regime III at high liquid flow rate with degenerative pressure fluctuation in form of relatively stable bubbly or plug flow. The results indicate that severe slugging still occurs when the declination angle of pipeline is 0˚, and there are mainly two kinds of regimes: regime I and regime II. As the angle increases, the formation ranges of regime I and regime III increase slightly while that of regime II is not affected. With the increase of gas superficial velocity and liquid superficial velocity, the pressure fluctuation at the bottom of riser increases initially and then decreases. The maximum value of pressure fluctuation occurs at the transition boundary of regimes I and II.
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| 关 键 词： | multiphase flow severe slugging pipeline-riser system flow regime pressure fluctuation |
| 收稿时间： | 2010-04-07 |
| 修稿时间： | 2010-12-12 |
Flow pattern and pressure fluctuation of severe slugging in pipeline-riser system |
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| LUO Xiaoming,HE Limin,MA Huawei. Flow pattern and pressure fluctuation of severe slugging in pipeline-riser system[J]. Chinese Journal of Chemical Engineering, 2011, 19(1): 26-32 |
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| Authors: | LUO Xiaoming HE Limin MA Huawei |
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| Affiliation: | Department of Storage&Transportation Engineering, China University of Petroleum, Qingdao 266555, China |
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| Abstract: | During the exploitation of offshore oil and gas, it is easy to form severe slugging which can cause great harm in the riser connecting wellheads and offshore platform preprocessing system. The flow pattern and pressure fluctuation of severe slugging were studied in an experimental simulation system with inner diameter of 0.051 m. It is found that severe slugging can be divided into three severe slugging regimes: regime I at low gas and liquid flow rates with large pressure fluctuation, intermittent flow of liquid and gas in the riser, and apparent cutoff of liquid phase, regime II at high gas flow rate with non-periodic fluctuation and discontinuous liquid outflow and no gas cutoff, regime III at high liquid flow rate with degenerative pressure fluctuation in form of relatively stable bubbly or plug flow. The results indicate that severe slugging still occurs when the declination angle of pipeline is 0˚, and there are mainly two kinds of regimes: regime I and regime II. As the angle increases, the formation ranges of regime I and regime III increase slightly while that of regime II is not affected. With the increase of gas superficial velocity and liquid superficial velocity, the pressure fluctuation at the bottom of riser increases initially and then decreases. The maximum value of pressure fluctuation occurs at the transition boundary of regimes I and II. |
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| Keywords: | multiphase flow severe slugging pipeline-riser system flow regime pressure fluctuation |
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