| 摘要 |
The utility model relates to a high-pressure packer. It is composed of upper joint, rubber tube, central pipe, setting and releasing mechanism, and lower joint. One or two ends of the rubber pipe are provided with a helical spring. This structure effectively overcomes unfavourable extrusion of packer's shoulder so as to protect the rubber tube, improve the capacity of bearing high-pressure, extend operating life of the packer and save the operating cost.
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