Tool Introduction:

In the drilling operation of petroleum and geological drilling, there may be small block like falling objects underground, and some metal impurities often adhere to the inner wall of the casing. In order to clean and purify the underground environment, a strong magnetic fishing device is used. The strong magnetic fishing device uses its own permanent magnetic steel to magnetize and adsorb the above-mentioned impurities and falling objects, thus playing a role in cleaning and purifying the underground environment. Due to its simple structure, convenient operation, reliable performance, small size, and light weight, it is widely used. Its usage characteristics are wide temperature resistance range, strong magnetic attraction performance, high work efficiency, and have received good feedback from users.

Structural features:

① The main body of this type of strong magnetic fishing device is an integral structure, with six sets of evenly distributed penetrable T-shaped groove structures processed on the body. The strip-shaped magnetic steel is inserted into the T-shaped groove from the upper end, and after insertion, it is tightened with an upper threaded connection clamping ring;

② In order to avoid interference from the magnetic force of the strip magnet on other operations such as pitching in the tool diameter, an L-shaped stainless steel magnetic isolation plate is arranged at the installation position of the strip magnet, which can effectively isolate the interference of the magnetic force on the diameter;

③ The strip-shaped magnetic steel is made of drillable permanent magnetic strong magnetic material, which has good high temperature resistance and a maximum working temperature of 250-350 ℃. Its performance is safe and reliable; The main body of this type of strong magnetic fishing device is integral, with a lifting short section added at the upper end for easy lifting and lowering operations using a hoist.

Operation:

When operation is required, it is usually used in conjunction with a scraper and casing brush to adsorb ferromagnetic debris in the mud. It is mainly used in low flow rate and low circulation well cleaning operations, with significant adsorption effects.

Technical parameters: