Pigging in pipe before inspection, pipe pigging under low throughput intermittent operation; get rid of congealable oil, wax precipitation and incrustation in pipe to reduce backpressure and friction, and lower temperature.
Pigging in pipe before inspection, pipe pigging under low throughput intermittent operation; get rid of congealable oil, wax precipitation and incrustation in pipe to reduce backpressure and friction, and lower temperature.
管线内检测前清管、低输量间歇运行输油管线清管；清除管线内部的凝油、结蜡、结垢，达到减小输油回压、减小磨阻、降低输油温度的目的。