Oil tube packer capable of conveniently replacing rubber sleeve

Abstract

The tubing packer comprises a center pipe, a slip bowl and a centralizing block sheath, an upper connector and a lower connector are installed at one end of the outer side of the center pipe through threaded pipes, the centralizing block sheath is installed on the outer side of the center pipe, a centralizing block seat is installed in the centralizing block sheath, and a rubber sleeve is installed in the centralizing block seat. Two sets of centralizing block pieces are movably installed in the centralizing block protective sleeve through installation grooves, and two sets of second springs are installed in the centralizing block pieces through fixing grooves. Outward elastic extrusion force can be applied to the centralizing block piece under the action of the second spring, so that the centralizing block piece elastically moves in the mounting groove under the elastic force of the second spring, the centralizing block piece is tightly attached to the inner wall of an oil pipe and does not move under the action of elastic potential energy of the second spring, and therefore the packer can be conveniently positioned; and the packer can be locked at a specified seat key position, so that the accuracy of the packer on the sealing position of the oil pipe is ensured, and the practicability of the device is improved.

Description

technical field [0001] The invention relates to the technical field of oil-pipe packers, in particular to an oil-pipe packer for replacing rubber cylinders conveniently. Background technique [0002] In recent years, with the rapid development of my country's economy, the demand for petroleum products has continued to increase; in order to meet the growing demand for petroleum, my country's efforts in oil exploration have also continued to increase. However, my country's petroleum resources, especially shallow oil It is very limited, so deep well mining is of great significance to alleviating my country's oil crisis, which is also a major trend in international oil exploration; for the key sealing component of deep well mining, tubing packer, its pressure bearing capacity requirements have been continuously improved, but always Failure to make breakthroughs and to meet the use requirements of domestic oil fields is a technical bottleneck for deep well mining. For this reason, ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: the tubing packer for easy replacement of the rubber cartridge cannot quickly lock the seat key position of the seal, so that the packer is affected by the high slipperiness of the inner wall of the tubing when sealing. Influenced by the oil pipe, the packer is prone to slipping under the influence of the inner wall of the high-lubrication oil pipe. It does not have a quick disassembly structure, and the rubber cartridge cannot be replaced conveniently. It is difficult to install, which affects the recycling rate of the rubber cartridge. At the same time, it is inconvenient to partially replace the rubber cartridge when the rubber cartridge is partially damaged.

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