It usually takes 10 to 20 seconds of flushing to remove all sand particles, but you may flush the eyes for up to 15 minutes.
通常需要10至20秒才能冲洗掉所有的沙子，但是你可能要冲洗15分钟以上。
2
The effect of blowout prevention and sand control of FYJ-2 is tested by laboratory experiment of dynamic mud stone particle flushing, sand control experiment and formation damage test.
通过室内泥岩颗粒动态冲刷试验、抑砂试验和对地层的伤害试验，测试了FY J - 2的防膨抑砂效果。
3
Foam fluid is widely used in sand-flushing operations in oilfields, while the prop-carrying capability of foam fluid is very important.