Long-rubber-barrel differential pressure type water filling packer capable of washing well
A pressure difference type, long rubber tube technology, applied in the direction of flushing wellbore, sealing/packing, wellbore/well parts, etc., can solve the problems of complex structure, setting seal, well washing impediment, etc., to achieve reasonable structural design, Highly functional effect
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[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. However, those skilled in the art should know that the present invention is not limited to the specific embodiments listed, as long as it conforms to the spirit of the present invention, it should be included in the protection scope of the present invention.
[0021] The pressure-difference water injection packer of the long-flushable rubber barrel of the present invention includes a setting assembly, a rubber barrel sealing assembly, a well-flushing assembly, and an unsealing device. It is used for layered water injection in small interlayers in medium-deep wells with small clip spacing, thick oil layer and thin interlayer tubing in the first-level two sections, two-level three-section and above water injection wells.
[0022] see attached figure 1 , 2 . The upper joint 1, the upper center pipe 2, the bridge connection sleeve 13, the lower center pipe 3...
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