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Anti-drop strong magnetic fishing rod

A strong magnetic and anti-dropping technology, which is applied in the direction of wellbore/well parts, earthwork drilling and mining, etc., can solve the problems of screw falling off, magnet falling off, construction difficulties, etc., and achieve the effect of easy disassembly, assembly and maintenance

Active Publication Date: 2018-03-30
JEREH ENERGY SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some strong magnetic fishing tools have magnets distributed around the tools, but the installation of the magnets is fixed by tools such as screws. The downhole situation is complicated, and the screws are likely to fall off, which will cause the magnets to fall off, causing great construction difficulties for subsequent operations.

Method used

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  • Anti-drop strong magnetic fishing rod

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Embodiment Construction

[0020] The anti-drop strong magnetic fishing rod of the present invention, such as Figures 1 to 2 As shown, the rod body 1 is included, the side wall of the rod body 1 is axially provided with a mounting groove 2, and a permanent magnet 3 is installed in the mounting groove 2, through which sundries such as downhole iron blocks are salvaged. In order to adapt to the high-temperature downhole environment, the permanent magnet 3 can be a high-temperature permanent magnet with high temperature resistance.

[0021] The upper and lower ends of the mounting groove 2 do not reach the end of the rod body 1 .

[0022] The mounting groove 2 can be a groove shape whose bottom width is greater than the width of the notch, such as a dovetail groove or a T-shaped groove. The width of the permanent magnet 3 is greater than the width of the notch of the installation groove, so that the permanent magnet 3 will not escape from the notch of the installation groove 2 . The cross-section of the...

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Abstract

An anti-drop strong magnetic fishing rod, comprising a rod body, the side wall of the rod body is axially provided with a mounting groove, the width of the groove bottom of the mounting groove is greater than the width of the notch, and a permanent magnet is installed in the mounting groove, so The width of the permanent magnet is greater than the width of the notch of the installation groove, and one end of the installation groove is provided with an installation opening, the width of the installation opening is greater than or equal to the width of the bottom of the installation groove, and the length of the installation opening is greater than or equal to the length of the permanent magnet . The permanent magnet that prevents the strong magnetic fishing rod from falling is installed in the installation groove set on the side wall. The bottom of the installation groove is wide and narrow, and the width of the permanent magnet is larger than the groove, so that the permanent magnet is fixed in the installation groove in the form of embedding, and there will be no accidents. Falling off, and there are no fixing parts such as screws, and the falling off of the fixing parts will not occur. The permanent magnet is loaded into or removed from the installation groove through the installation port provided at one end, and the permanent magnet is easy to disassemble, which is convenient for the assembly and maintenance of the fishing rod.

Description

technical field [0001] The invention relates to the field of oil and gas exploration and development, in particular to a strong magnetic fishing rod for preventing falling off of oil and gas. Background technique [0002] With the development of oil exploration and development technology, the number of horizontal wells, directional wells, and highly deviated wells has increased, and bridge plugging and drilling bridge plugs have become important means of oil and gas well development. However, a large number of slips accompanying drilling and grinding bridge plugs are likely to cause blockage at the bottom of the well. How to use effective methods to salvage the slips has become the focus of oil and gas well development. [0003] On the other hand, the damage of the tubing and casing accompanying the long-term downhole operation produces a large amount of debris, which causes multiple difficulties for later production and repair of oil and gas wells. In horizontal wells, dir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/06
Inventor 宁世品韩滔谢从剑张博浩高敏
Owner JEREH ENERGY SERVICES
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