Oil-water well packer

Abstract

The invention discloses an oil-water well packer, and relates to the technical field of oil exploitation equipment. The oil-water well packer comprises a packer body, and a well wall cleaning device is arranged at the bottom of the packer body; and the well wall cleaning device comprises an object cylinder, the object cylinder is cylindrical and is provided with a downward opening, T-shaped inserting rods are fixedly connected to the positions, close to the two sides, of the top of the object cylinder, a stepping motor, a storage battery pack and two electric telescopic rods are arranged inside the object cylinder, the output end of the stepping motor is in transmission connection with a transmission shaft, the interior of the transmission shaft is hollow, an adapter rod is arranged in a movably inserted mode, and one end of the adapter rod and one ends of the electric telescopic rods are both provided with the same push disc. According to the oil-water well packer, by arranging the well wall cleaning device, petroleum protrusions on the surface of the inner wall of an underground pipe column are scraped through wall scraping blocks on the surface of the push disc, and therefore the situation that the surface of the underground pipe column is provided with solidified petroleum protrusions, and consequently, the packing effect of the packer body on the underground pipe column is affected is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of oil exploitation equipment, in particular to an oil-water well packer. Background technique [0002] A packer is a downhole tool that is connected to the downhole tubing string and is used to isolate the oil pipe from the oil and gas well casing or the annular space of the open hole wall. The working mechanism of the packer: the packer is used to isolate the oil layer in the casing important tool. Its main component is the rubber sleeve, through hydraulic or mechanical action, the rubber can be expanded to seal the oil and the annular space of the casing, and separate the upper and lower oil layers to achieve a certain construction purpose, which is also the main function of the packer . [0003] At present, packers are divided into: self-sealing packers that achieve sealing by the interference between the outer diameter of the packer and the inner diameter of the casing and the working pressure differe...

AI Technical Summary

Problems solved by technology

[0003] At present, packers are divided into: self-sealing packers that achieve sealing by the interference between the outer diameter of the packer and the inner diameter of the casing and the working pressure difference; compress the packer by axial force to make the outer diameter of the packer change The compression packer that achieves sealing to a large extent; the expandable packer that expands the outer diameter of the packer to achieve sealing by radial force and hydraulic pressure in the inner cavity of the packer; and the self-sealing, compression and expansion packer The combined packer is combined to achieve sealing. Since the downhole pipe string of an oil well is a pipeline used to transport oil, during the oil transportation process, it will inevitably cause solidified oil to adhere to the surface of the downhole pipe string, thus forming a specification Non-uniform bulges, and after the packer enters the inside of the downhole string and reaches the position that needs to be isolated, if there is a bulge on the inner wall of the downhole string, the isolation effect cannot be achieved

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