Anti-dropping strong magnetic fishing rod

Abstract

The invention discloses an anti-dropping strong magnetic fishing rod comprising a rod body. The side wall of the rod body is axially provided with installation grooves, and the width of the bottom of each installation groove is larger than the width of the top of each installation groove. Each installation groove is internally provided with permanent magnets, and the width of each permanent magnet is larger than the width of the top of each installation groove. One end of each installation groove is provided with an installation port, the width of the installation port is larger than or equal to the width of the bottom of the installation groove, and the length of the installation port is larger than or equal to the length of each permanent magnet. The permanent magnets of the anti-dropping strong magnetic fishing rod are mounted in the installation grooves arranged on the side wall, the width of the bottom of each installation groove is larger than the width of the top of the installation groove, and the width of each permanent magnet is larger than the width of the top of each installation groove, so that the permanent magnets are fixed in the installation grooves in an embedded manner and cannot fall off, and fixing elements cannot fall off as the fixing elements such as screws are not employed. The permanent magnets are mounted in the installation grooves or are dismounted from the installation grooves through the installation ports arranged at one ends of the installation grooves, so that the permanent magnets can be easily dismounted, and the fishing rod is convenient to assemble and maintain.

Description

Technical field [0001] The invention relates to the field of petroleum and natural gas exploration and development, in particular to an anti-dropping strong magnetic fishing rod used in petroleum and natural gas exploration. Background technique [0002] With the development of petroleum exploration and development technology, the number of horizontal wells, directional wells, and highly deviated wells has increased. Lowering bridge plugs and drilling bridge plugs have become important means for oil and gas well development. However, the large number of slips that appear along with the drilling and grinding of bridge plugs are likely to cause bottom hole blockage. 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 tubing and casing accompanying long-term downhole operations produced a lot of debris, which caused multiple difficulties in later production and repair of oil and gas wells. I...

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.

Images