As sand plug occurs, stop adding proppants and circulate them out.
出现砂堵，停止加砂，进行循环。
2
At the end of the farc job, a clear fluid flush is pumped down the well to clean the well of proppants.
在压裂作业的最后，沿井向下泵入洁净的替置液以清理井内的支撑剂。
3
The fluid, usually oil, water, foam, or gelled fluid that transports the proppants during hydraulic fracturing. The fluid that transports gravel during gravel packing is also called carrying fluid.