Magnetic material removal device

By designing a magnetic material removal device, which utilizes a permanent magnet roller and scraper hopper assembly, the problem of clogging of the rotary guide instrument caused by excessive magnetic material content in the drilling fluid was solved. This enabled the automatic adsorption and removal of magnetic materials in the drilling fluid, improving the efficiency and safety of drilling operations.

CN224351926UActive Publication Date: 2026-06-12CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA NAT PETROLEUM CORP
Filing Date
2025-08-28
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

During rotary steerable drilling, excessive magnetic material content in the drilling fluid can cause blockage of the rotary steerable instrument, resulting in no signal from the instrument. This necessitates tripping the drill string or replacing the instrument, impacting construction efficiency and costs.

Method used

A magnetic material removal device is designed, including a permanent magnet drum assembly and a scraper hopper. The magnetic material is scraped into the scraper hopper by the rotation of the permanent magnet drum and discharged through the drain port. The height of the drum is adjusted by a lifting mechanism, and the permanent magnet drum is driven to rotate by a power component to control the content of magnetic material in the drilling fluid.

Benefits of technology

Effectively controlling the content of magnetic materials in drilling fluid ensures the normal operation of rotary drilling instruments, reduces the frequency of tripping out of the well and changing instruments, improves drilling efficiency, and reduces costs and labor intensity for workers.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224351926U_ABST
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Abstract

The utility model discloses a kind of magnetic material removing device, including outer frame;Permanent magnet roller assembly is arranged in the inside of outer frame;And the scraping hopper matched with the permanent magnet roller of permanent magnet roller assembly one side, the upper end of scraping hopper is close to the scraping end of permanent magnet roller one side, the tangent of the corresponding position of scraping end and permanent magnet roller, to be scraped to the permanent magnet roller surface magnetic material in scraping hopper by the rotation of permanent magnet roller;The lower end of scraping hopper is blowdown, and blowdown connects hose to discharge internal magnetic material;The device further includes lifting mechanism connected with permanent magnet roller assembly, and lifting mechanism is used to adjust the height of permanent magnet roller assembly.The device of the utility model can effectively control the content of magnetic material in drilling fluid, so that it is lower than the value causing spin guide instrument blockage, ensure the normal use of spin guide instrument, ensure the smooth progress of on-site drilling construction.
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