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 in

stalling 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.