The material used to permanently seal annular spaces between casing and borehole walls.
用于永久封隔套管和井壁之间的环型空间的材料。
The magnetic memory technique was used to develop a detection system for the borehole casing pipe.
利用铁磁材料的磁记忆性, 研制出了井下在役套管检测系统。
Application of Oil Industry Special Purposed Floating Hoop and Shoe on Coalmine Service Borehole Casing Lowering and Consolidation
石油专用浮箍浮鞋在煤矿服务钻孔下管和固井中的应用
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