Packer fishing tool

Abstract

The invention provides a packer fishing tool. The packer fishing tool comprises an outer tube, an inner tube and a connector, wherein the outer tube and the inner tube are both hollow, the inner tube is sleeved with the outer tube and fixedly connected with the outer tube, the inner tube is used for circulation of drilling fluid, at least one fishing tongue open towards the first end of the outer tube is arranged on the outer wall of the outer tube and used for hooking an inner cavity of a packer, the connector is connected between the first end of the outer tube and the first end of the inner tube, and the connector is used for being connected with a drill rod. By the adoption of the packer fishing tool, efficient fishing of the packer can be achieved.

Description

technical field [0001] The invention relates to oil and gas well fishing technology, in particular to a packer fishing tool. Background technique [0002] In oil production, packers are used to isolate the annular space between pipe strings of various sizes and wellbore and between pipe strings. When the seal on the packer is damaged, or when the layer needs to be changed, the packer needs to be salvaged from the depth of the oil well. [0003] In the prior art, the packer is salvaged by two methods of male cone salvage and drilling and mill salvage. Among them, the specific method of male cone fishing is as follows: the male cone is lowered into the well through the drill pipe, after the male cone enters the inner cavity of the packer, the drilling pressure is properly applied, and the drilling tool is rotated, and the fishing thread on the male cone squeezes the packer The inner wall of the inner cavity is made to make a button. When the button between the male cone and ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a packer fishing tool to solve the technical problem of low fishing efficiency in the existing fishing methods

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