borehole pump

test results of devices for alternate oil and water supply to the borehole pump suction

向井下泵入口交替输送油和水装置的试验效果

The heat transfer of ground heat exchanger is enhanced by changing backfill materials for reducing the thermal resistance of borehole and controlling heat pump operation mode for delaying the soil temperature rise speed.

本文通过改变回填材料减小钻孔内热阻和控制热泵运行模式延迟土壤温升来强化埋管换热器的传热，提高系统运行效率。

The technology of removing the low concentration carbon dioxide in the atmosphere is essential for the life sustain in the area of manned aircraft, submarine, working at the borehole pump and so on.

大气中低浓度二氧化碳清除技术是载人航天器、潜水艇、深井作业等领域所必备的生命维持技术。

The fluid and fine sand in the borehole enter the subsurface pump through the liner and then lifted to the ground.

井筒内液体和细小砂子通过筛管进入抽油泵内举升到地面。