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reverse circulation continuous coring
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reverse circulation continuous coring
Encyclopedia
理学
钻进工艺
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reverse circulation continuous coring
反循环连续取心
采用双壁钻杆钻进,冲洗液(或空气)从双壁钻杆内外管环状间隙泵入,从钻杆内管内返出地面,同时连续不断地把岩心岩样携带至地表的取心方法。
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