采出液出砂在计量井口除去，减少集输系统管网、设备的磨损。
After removing sand at wellhead , wear and tear of pipeline and device in the system of collect transport is reduced.
但是，出砂冷采采出的原油含砂量较大，对油田地面集输设备带来了更大的难题。
However, sand content of crude oil is very high by using cold sand mining, which brings on great challenge to surface gathering equipment is brought.
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