Invention Grant
US08205671B1 Downhole bridge plug or packer assemblies 有权
井下桥塞或封隔器组件

Downhole bridge plug or packer assemblies
Abstract:
A bridge plug or packer assembly includes a mandrel; at least one sealing element provided on the mandrel; a pair of backup rings each having a plurality of spiral ring grooves provided on the mandrel on respective sides of the at least one sealing element; and a pair of pressure-applying elements provided on the mandrel on respective sides of the pair of backup rings, respectively.
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