Calibration of Ultrasonic Transducer Based on Ultrasonic Logging Instrument for Shaft Sinking

Autor: Maoyong Cao, Xiaoan Si, Hui Zhang, Fengying Ma, Peng Ji, Hui Yao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Sensors, Vol 22, Iss 18, p 6867 (2022)
Druh dokumentu: article
ISSN: 22186867
1424-8220
DOI: 10.3390/s22186867
Popis: High-precision logging equipment is critical for measuring the borehole diameter and drilling offset in coal mining and petroleum drilling. We propose a module composition and positioning principle for an ultrasonic transducer based on an ultrasonic logging instrument for shaft sinking by drilling (ULISSD) for calculating the reflection distance. The logging distance, which is the primary performance index of a logging system, is determined by using the self-reception sensitivity and error of the ultrasonic transducer in a downhole system. To measure the error between the piezoelectric element of the transducer and the rubber seal of the borehole logging system, we developed an ultrasonic-transducer error-calibration device and a calibration method for a central-air-return-shaft-drilling project. This calibration device can eliminate the inherent error of the transducer and calculate the rate of propagation with high accuracy. The measurement error is reduced by approximately 1.5 mm; thus, the ULISSD measurement accuracy can be effectively improved in central-air-return-shaft drilling.
Databáze: Directory of Open Access Journals
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