Packer for oil exploitation well

Abstract

The invention relates to the related technical field of oil exploitation, and discloses a packer for an oil exploitation well. The packer comprises a supporting top seat and a supporting bottom seat, the supporting top seat and the supporting bottom seat are fixedly installed through a connecting rod, and a limiting rod is fixedly installed in the middle of the bottom end of the supporting top seat; and a cavity, communicating with the limiting rod and an adjusting block, of the inner wall of the supporting top seat is set to be a main pressure channel, a rubber bag located at the outer side of the limiting rod is fixedly installed at the bottom end of the supporting top seat, and the adjusting block is fixedly installed at the bottom end of the limiting rod. According to the packer, the rubber bag is arranged between the supporting top seat and the supporting bottom seat, and a tightening tension spring arranged in the rubber bag extrudes a medium in a fastening cavity, so that the rubber bag is continuously attached to the well wall; and after the rubber bag leaks, the radial length of the tightening tension spring is increased when the tightening tension spring contracts, so that the rubber bag is extruded on the inner wall of the well wall, and finally the purposes of high-pressure tightening and leakage secondary fastening are achieved.

Description

technical field [0001] The invention relates to the technical field related to petroleum exploitation, in particular to a packer for petroleum exploitation wells. Background technique [0002] A packer refers to a downhole tool that is connected to the downhole tubing string and is used to isolate the tubing and oil and gas well casing or the annular space of the open hole wall. [0003] The existing packer is mainly filled with expansion reactants through the capsule sleeve, and the high-pressure medium liquid is passed through the hydraulic pipe, and after the high-pressure medium liquid squeezes the expansion reactants, the raw materials in the interior will be mixed, and the After expansion, the rubber tube will be pressed against the well wall, thereby sealing off the oil leaking from the well wall. [0004] However, in the process of actual use, since the rubber cartridge expanded by the reactant cannot be reused, the used rubber cartridge will be directly discarded, ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the use of the existing packers for oil production proposed in the background technology, the present invention provides a packer for oil production wells, which has the characteristics of frequent use, easy disassembly and assembly, high pressure tightening and leakage. The advantages of secondary fastening solve the technical problems raised in the above-mentioned background technology

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