发明名称 DORMANT BOREHOLE SEALING DEVICE
摘要 A device for temporarily sealing dormant boreholes, includes a generally cylindrical body member for insertion into a borehole having an irregular interior surface. The body member is made of a stiff deformable material and normally lies between upper and lower end plates at respective opposite ends of the body member. A shank extends longitudinally through the body member between the end plates and protrudes above the upper end plate, terminating in a handle. The body member can be manually forcibly fitted into the borehole and removed therefrom with the aid of the handle.
申请公布号 CA2156779(A1) 申请公布日期 1997.02.24
申请号 CA19952156779 申请日期 1995.08.23
申请人 O'GARR, PHIL 发明人 O'GARR, PHIL
分类号 E21B33/12;(IPC1-7):E21B33/12 主分类号 E21B33/12
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