Recyclable hydraulic production packer
A recyclable hydraulic production packer is provided with bi-directional slips, can be used for setting at stretching, retracting or neutral states, and also can bear pressure differences form above and below. With the design of large bypass openings inside the packer, swabbing effects during loweri...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A recyclable hydraulic production packer is provided with bi-directional slips, can be used for setting at stretching, retracting or neutral states, and also can bear pressure differences form above and below. With the design of large bypass openings inside the packer, swabbing effects during lowering and retracting can be reduced, and the large bypass openings are automatically closed during setting. When the packer is unset, the bypass openings are first opened, up-down pressure is balanced, when the packer bears a lower pressure, a compensation piston can further ensure that an upper slip bits tightly, the setting is reliable, and resistance during retraction of tools can be reduced through an upper slip release device of the packer. The packer provided by the present invention is characterized by being excellent in pressure bearing capability, capable of setting in various working conditions, and recyclable. |
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