casing hole-boring method 套管护壁钻孔法
full-casing sampling method 全套管取样法
casing follow-up method 套管跟进法
Casing pressure drop method 套压降低法
downhole hammer casing drilling method 潜孔锤偏心跟管钻进法
the method of casing soil 覆土模式
spiral casing direct laying method 蜗壳直接埋入法
installing method of casing centralizers 套管扶正器的装法
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