Downhole rope fishing tool for oil wells

A technology for oil wells and tools, applied in the fields of oil well fishing tools and downhole fishing rope tools

Inactive Publication Date: 2014-09-10
CHENGDU LAIBAO PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The present invention overcomes the deficiencies of the prior art and provides an underground fishing rope tool for oil wells, which solves the problem of incomplete fishing with the previous rope fishing tools. question

Method used

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  • Downhole rope fishing tool for oil wells

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 The shown downhole rope fishing tool for oil wells includes a main body 4, and the main body 4 is axially provided with an installation through groove 6, and a plurality of axially equidistant slippage nets 1 are arranged in the installation through groove 6, and the main body 4 A plurality of fishing rope posts 3 are arranged on both sides of the installation through groove 6. The surface of the fishing rope post 3 is inclined to the main body 4. The circumferential surface of the fishing rope post 3 is provided with a plurality of small barbs 2. Any end of the main body 4 is provided with a connecting head 5, and the connecting head 5 is provided with an internal conical thread.

[0017] When this embodiment is used, the connector 5 of the main body 4 is connected to the connector through the inner conical thread, and the main body 4 is driven to rotate and move up and down through the connector. Driven by the main body 4, it is wrapped tightly on t...

Embodiment 2

[0020] In this embodiment, the following structure is optimized on the basis of Embodiment 1: the sliding screen 1 is detachably arranged in the installation channel 6 .

[0021] In this embodiment, in order to facilitate the replacement of the filter screen 1, and also to facilitate the pouring of the lumps in the filter screen 1, the filter screen 1 and the installation channel 6 are connected in a detachable manner, such as buckles, plugs, bolts, etc. Way to connect, easy to replace and use.

Embodiment 3

[0023] In this embodiment, the filter screen is optimized on the basis of embodiment 1 or embodiment 2, specifically: the filter screen 1 is made of stainless steel.

[0024] In this embodiment, considering that the environment in the oil well is relatively harsh, the slip screen 1 is extremely susceptible to corrosion damage, and at the same time, the slip screen 1 is easily damaged by contact and collision with the falling objects inside during fishing, so the slip screen 1 needs to have good resistance. Corrosion and strength can be used for a long time. Therefore, in order to solve the above problems, the leaking screen 1 is made of stainless steel. Stainless steel is not only corrosion-resistant, but also has high strength.

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Abstract

The invention discloses a downhole rope fishing tool for oil wells. The tool comprises a body (4), wherein a mounting through groove (6) is axially formed in the body (4), a plurality of leaking nets (1) which are distributed axially at equal intervals are arranged in the mounting through groove (6), a plurality of rope fishing posts (3) are arranged on the outer end surface of each of two sides of the mounting through groove (6) of the body (4), the rope fishing posts (3) are arranged obliquely relative to the surface of the body (4), a plurality of small barbs (2) are arranged on the circumferential surface of each rope fishing post (3), a connector (5) is arranged at any end of the body (4), and an inner tapered thread is arranged in the connector (5). The designed downhole rope fishing tool for the oil wells is simple in structure, good in fishing effect, more thorough in fishing and capable of being used for fishing rope-shaped and lump-shaped falling objects in the oil wells; the fished rope-shaped falling objects can wind around the rope fishing posts firmly and cannot fall off easily, so that the tool is high in practicability.

Description

technical field [0001] The invention relates to an oil well fishing tool, which belongs to the petroleum field, and more specifically relates to a downhole fishing rope tool used for oil wells. Background technique [0002] During the oil well operation, some falling objects that affect the operation and oil production often fall into the oil well, usually some thin and soft objects such as steel wire ropes, cables, mud logging wires, etc. These falling objects need to be fished out from the oil well in time , so as not to block the oil well or damage the equipment. Although today's rope fishing tools can fish out the internal rope-like debris, the effect is poor for some steel wires and cables that have already formed a group, and the fishing is not complete, so that the remaining debris in the oil well cannot be removed, causing some disadvantages as a result of. Contents of the invention [0003] The invention overcomes the disadvantages of the prior art, provides an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/12E21B31/18
Inventor 谭正怀
Owner CHENGDU LAIBAO PETROLEUM EQUIP
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