Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher

doi:10.1016/j.cjche.2020.09.059

中国化学工程学报 ›› 2021, Vol. 32 ›› Issue (4): 134-143.DOI: 10.1016/j.cjche.2020.09.059

• Separation Science and Engineering • 上一篇下一篇

Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher

Xianchao Liang^1,2, Limin He¹, Xiaoming Luo¹, Qingping Li¹, Yuanpeng You¹, Yiqiu Xu¹

1 College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580, China;
2 Offshore Oil Engineering Co. Ltd, Tianjin 300461, China

收稿日期:2020-01-18 修回日期:2020-09-11 出版日期:2021-04-28 发布日期:2021-06-19
通讯作者: Limin He

Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher

Xianchao Liang^1,2, Limin He¹, Xiaoming Luo¹, Qingping Li¹, Yuanpeng You¹, Yiqiu Xu¹

1 College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580, China;
2 Offshore Oil Engineering Co. Ltd, Tianjin 300461, China

Received:2020-01-18 Revised:2020-09-11 Online:2021-04-28 Published:2021-06-19
Contact: Limin He

摘要/Abstract

摘要： Sand production often leads to the failure of production equipment on offshore platform. Therefore, a new idea has been put forward, which is installing cyclone or baffle in the internal of the slug catcher for better sand control. In this paper, an experimental study is presented, which mainly includes sand particles accumulation shape, migration law and separation performance. The results suggest that the accumulation area is mainly divided into two zones:the crowded settlement zone and the free settlement zone. The crowded settlement zone has a special shape, which can be characterized by two parameters:accumulation length and accumulation angle. Axial sampling analysis shows obvious particle classification. Median particle size decreases with the increase of the axial distance, and the range of particle size distribution narrows gradually. The separation experiment shows that the gas velocity has the greatest influence on the separation efficiency. When the gas velocity is 14 m·s^-1, the separation efficiency drops sharply, which can be abated by installing cyclone separator. In addition, the separation efficiency tends to be a constant under different gas velocities by installing baffle with appropriate height. Then the effectiveness and rationality of installing internal components can be strongly proved. All these provide important guidance for maximizing the sand control function of the slug catcher.

关键词: Slug catcher, Particle size distribution, Separation efficiency, Sedimentation, Cyclone separator, Baffle

Abstract: Sand production often leads to the failure of production equipment on offshore platform. Therefore, a new idea has been put forward, which is installing cyclone or baffle in the internal of the slug catcher for better sand control. In this paper, an experimental study is presented, which mainly includes sand particles accumulation shape, migration law and separation performance. The results suggest that the accumulation area is mainly divided into two zones:the crowded settlement zone and the free settlement zone. The crowded settlement zone has a special shape, which can be characterized by two parameters:accumulation length and accumulation angle. Axial sampling analysis shows obvious particle classification. Median particle size decreases with the increase of the axial distance, and the range of particle size distribution narrows gradually. The separation experiment shows that the gas velocity has the greatest influence on the separation efficiency. When the gas velocity is 14 m·s^-1, the separation efficiency drops sharply, which can be abated by installing cyclone separator. In addition, the separation efficiency tends to be a constant under different gas velocities by installing baffle with appropriate height. Then the effectiveness and rationality of installing internal components can be strongly proved. All these provide important guidance for maximizing the sand control function of the slug catcher.

Key words: Slug catcher, Particle size distribution, Separation efficiency, Sedimentation, Cyclone separator, Baffle

Xianchao Liang, Limin He, Xiaoming Luo, Qingping Li, Yuanpeng You, Yiqiu Xu. Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher[J]. 中国化学工程学报, 2021, 32(4): 134-143.

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Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher

Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher

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