| 摘要 |
The model consists of a hydraulic packer constructed in glass-fiber reinforced epoxy and stainless steel which has been developed and designed with wholly corrosion resistant material, being constructed with 70% glass-fiber reinforced epoxy and 30% stainless chromium steel. It has a larger area of packing and seal. It works with low driving pressure. Its hydraulic chamber achieves a greater packing force at normal pressure. It can be used in wells with tubing made of glass-fiber reinforced epoxy. It has a double anchorage system and a jack system.
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