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Round pipe inner wall self-weight tensioning fisher

An overshot and tensioning technology, which is applied in the direction of wellbore/well parts, earthwork drilling, etc., can solve the problems of automatically adjusting the tightness of the overshot, affecting the fishing efficiency of the overshot, and the poor fishing effect of the overshot, so as to improve the overhaul. effect, improving fishing efficiency, and the effect of high hardness

Pending Publication Date: 2021-08-31
济南瑞环设备有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, the existing overshots have low efficiency when salvaging the pipeline, and cannot automatically adjust the tightness of the overshot according to the weight of the pipeline, so that the fishing effect of the overshot is poor, which leads to the practicality of the overshot. low performance, which affects the fishing efficiency of the overhauler. Therefore, we propose a round tube inner wall self-weight tension overshot to solve the above problems

Method used

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  • Round pipe inner wall self-weight tensioning fisher
  • Round pipe inner wall self-weight tensioning fisher

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0024] refer to Figure 1-6 , a round pipe inner wall self-weight tension fishing device, including a body 2, the lower end of the body 2 is fixed with a connector 3, the body 2 is a salvage component for round pipes, and can be quickly and conveniently carried out through the body 2 The round pipe is salvaged, and the movement and rotation of the connecting head 3 can drive the body 2 to move and lift. The upper end of the body 2 is fixed with a tensioning cone 4, and the upper end of the tensioning cone 4 is fixed with a guide head 1. Through the guide The head 1 and the tightening cone 4 can make the body 2 enter the round pipe more conveniently when the body 2 sa...

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Abstract

The invention discloses a round pipe inner wall self-weight tensioning fisher. The round pipe inner wall self-weight tensioning fisher comprises a machine body, a connector is fixed to the lower end of the machine body, a tensioning cone is fixed to the upper end of the machine body, a guide head is fixed to the upper end of the tensioning cone, and a plurality of tensioning taper pipes are jointly arranged on the periphery of the machine body. By using the tensioning taper pipes, the tensioning taper pipes are manufactured by adopting a heat treatment process and have high strength, high hardness and high tensile strength, reasonable taper fit is adopted for the inner wall, the tensioning taper pipes can be tensioned in time during fishing work and easily reset after fishing is finished, so that the fishing speed is increased to the maximum extent, and the working efficiency is improved; and meanwhile, the service life of the fisher can be prolonged, the fisher can be repeatedly used for dozens of times or even more, the construction cost is greatly saved, the practicability of the fisher can be higher, and the fishing effect and the fishing efficiency of the fisher are improved.

Description

technical field [0001] The invention relates to the technical field of fishing for round pipes, in particular to a self-weight tension fishing device for the inner wall of round pipes. Background technique [0002] The field of drilling construction is very extensive, especially there are many drilling projects for installing pipelines in boreholes, such as coal mine shaft freezing projects, gas drainage wells with hollow channels, mine emergency emergency rescue channels, feeding holes, drainage holes, Geological petroleum drilling, etc., when the pipeline is lowered and installed after the drilling construction is completed, the pipeline often falls into the well due to work negligence and causes accidents. Therefore, it is necessary to salvage the pipeline with a pipe fisher. [0003] However, the existing overshots have low efficiency when salvaging the pipeline, and cannot automatically adjust the tightness of the overshot according to the weight of the pipeline, so tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/20
CPCE21B31/20
Inventor 陈爱民
Owner 济南瑞环设备有限公司
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