| 摘要 |
A packoff having a metal energizing ring, mounted around a packoff mandrel. A pair of elastomeric packing elements are also mounted around the packoff mandrel, one on each side of the energizing ring. When the packoff is set, the packing elements are forced toward the energizing ring, and tapered surfaces on the energizing ring force the packing elements into sealing engagement with a well conduit.
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