A method for drilling monitoring based on drill string carrier wave communication and autonomous energy supply

By integrating a bottom-hole sensing and transmitting sub and a borehole acoustic receiving device onto the drill string, and using the acoustic signals transmitted through the drill string for real-time monitoring, the problems of surface monitoring lag and downhole power supply are solved. This enables accurate identification of rock mass micro-features and efficient data transmission, improving the accuracy and timeliness of rock mass mechanical property inversion.

CN122190737APending Publication Date: 2026-06-12CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Filing Date
2026-03-18
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing surface monitoring technologies cannot accurately capture the microscopic features of rocks during the moment of fracturing. Surface data suffers from severe macroscopicity and lag. Downhole sensors face difficulties in power supply and data transmission is unreliable, making it difficult to accurately identify the microstructure and brittle failure mechanism of rock masses.

Method used

The drilling monitoring method based on drill string carrier communication and autonomous power supply is adopted. By integrating bottom hole sensing and transmitting sub and wellhead acoustic wave receiving and demodulation device on the drill string, the real-time data transmission and processing of acoustic wave signals transmitted by the drill string is carried out. Combined with vibration energy acquisition power supply, the method realizes downhole micro-signal perception and highly reliable data upload.

Benefits of technology

It has significantly improved the accuracy and timeliness of rock mass mechanical property inversion, can accurately identify the microscopic features of rock fracture, adapt to the needs of efficient operation in complex terrain, and provides an intelligent monitoring solution.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a drilling monitoring method based on drill string carrier communication and autonomous power supply. It utilizes a tracked self-propelled drilling rig platform, which includes a drill string. The method is characterized by a bottom-hole sensing and transmitting section at one end of the drill string extending into the borehole, and an acoustic receiving and demodulation device at the other end on the ground. During drilling monitoring, monitoring information is acquired through the bottom-hole sensing and transmitting section and converted into an adjustment acoustic signal. The modulated acoustic signal is then transmitted along the drill string to the borehole acoustic receiving and demodulation device. This invention solves three major technical challenges: downhole micro-signal perception, long-term self-power supply, and highly reliable data upload. It achieves the fusion analysis of macroscopic mechanical parameters and microscopic acoustic emission characteristics, significantly improving the accuracy, timeliness, and reliability of drilling rock mass mechanical property inversion. This provides an advanced and practical intelligent solution for geological exploration, tunneling, and mining.
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