string description
... string control 钻柱控制 string description 钻柱说明 string galvanometer 弦线电流计 ...
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并以国内大港油田大位移井红9—1为例，说明了钻柱旋转在大位移井中对清除岩屑床的重要作用。
Taking the well Hong 9 1 in Dagang Oil Field for example, the important role of the rotation of drilling string in removing cuttings bed in extended reach well is expounded.
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