all casing drill 中文意思是什麼
all casing drill
解釋
全套管鉆機-
The above products are widely used in the metallurgy, the chemical industry, freezes, the boiler and the pressure vessel manufacture, the town gas pipeline, the military production, machine manufacture ; coal mine hydraulic pressure prop, car loader and other mechanical fluid compressed steel body ; all kinds of bearing inside and outside ferrule, petroleum casing and oil well drill
上述產品廣泛用於冶金化工冷凍鍋爐和壓力容器製造,城市煤氣管道,軍工生產,機械製造煤礦液壓支柱,裝載機和其它機械液壓鋼體各種規格軸承的內外套圈,石油套管和油井鉆桿等。 -
Since the deeper the well, the higher the lifting force at the upper drill string, the deviation of derrick and the well head ' s eccentricity should be avoided by all means to prevent the severe eccentric wear on the casing which is caused by excessive effective eccentricity
由於上部鉆柱的提升力隨井深的增加而增加,因此應當盡量避免井口偏心或井架安裝不正,防止有效偏心距過大而造成近井口套管的嚴重偏磨。
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