... 安全壳环形空间 containment annulus 井眼环形空间 hole annulus 裸眼环形空间 screen formation annulus ...
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casing-to-hole annulus 套管井壁环空
drill-hole annulus [矿业] 钻孔环形空间
·2,447,543篇论文数据，部分数据来源于NoteExpress
Cementing fills and seals the annulus between the well casing and the drilled hole.
FORBES: The Fracking Solution Is A Good Cement Job
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