An overflow monitoring device for oil and gas drilling

By introducing structures such as rotating cylinders, guide blocks, and guide plates into the drilling fluid monitoring device, combined with baffles and defoamers, the problems of low accuracy and false alarms in drilling fluid level monitoring have been solved, achieving accurate monitoring and stable display of the fluid level.

CN122169804BActive Publication Date: 2026-07-07NORTHEAST GASOLINEEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST GASOLINEEUM UNIV
Filing Date
2026-05-12
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing drilling fluid level monitoring devices suffer from low monitoring accuracy, false alarms, and jamming during drilling, especially when the drilling fluid contains rock cuttings and sand particles, which affects the accuracy of level monitoring.

Method used

An overflow monitoring device for oil and gas drilling was designed, including a rotating cylinder, a guide block and a guide plate. The device maintains a calm drilling fluid surface through a flow disturbance mechanism and an impeller defoamer, and works with an annular magnetic float for precise monitoring to avoid surface fluctuations and foaming.

Benefits of technology

It enables precise monitoring of drilling fluid levels, reduces surface fluctuations and foam formation, and improves the accuracy and reliability of monitoring.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a leakage monitoring device for oil and gas drilling, relating to the field of drilling fluid monitoring. The device includes a sealing cover plate, with a loading chamber fixedly connected to its bottom end. A guide rod is fixedly connected to the front side inside the loading chamber, and a flow-disrupting mechanism is provided at the bottom of the outer surface of the guide rod. A sensing probe is fixedly connected to the rear side inside the loading chamber. A rotating disk is fixedly connected to the bottom end of the loading chamber, located on the outer surface of the sensing probe. A wave-damping mechanism is rotatably connected to the outer surface of the rotating disk. The wave-damping mechanism includes a rotating cylinder, with a flow guide block fixedly connected to the left end of the outer wall of the rotating cylinder, and a flow guide plate fixedly connected to the right end of the outer wall of the rotating cylinder. This device maintains a calm liquid level inside the rotating cylinder by using a rotating cylinder. Simultaneously, the flow guide block and flow guide plate allow the rotating cylinder to adjust its angle with the water flow. The protective plate allows the drilling fluid flowing through the flow channel to slowly enter the rotating cylinder, preventing large fluctuations in the annular magnetic float during entry, thus providing accurate liquid level monitoring.
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