Dynamic liquid level detection method based on resonant frequency difference for oil wells. - Wei Zhou 017; Juan Liu; Liqun Gan (Turkish J. Electr. Eng. Comput. Sci., 2018)

Measurement of sound velocity in oil wells based on fast adaptive median filtering. - Wei Zhou 017; Juan Liu; Liqun Gan (Turkish J. Electr. Eng. Comput. Sci., 2020)