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belongs:【Cases】time:2012ear 11onth 21ay
Vacuum return sand pump is successfully applied to 48 wellsShanxi Fanzhuang area of Hubei oilfieldJuly 2011 to April 2012. The time of operation is decreased5-8 to 1., while the coal powder, coal dustquartz sand are fished out. Reduce the time of column u
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