Research on Acoustic Pulse Excitation Method for Behind-Casing Reservoir Detection
2022 4th International Conference on Intelligent Control, Measurement and Signal Processing (ICMSP)(2022)
Abstract
One of the key technologies for behind-casing reservoir detection depends on the performance of the acoustic emission system. The traditional single pulse excitation source is difficult to satisfy the requirements of reservoir detection due to its uncontrollable pulse width and low energy conversion efficiency. To address this problem, we propose a design idea based on the operation of sinusoidal pulse width modulation (SPWM) pulse excitation acoustic transducer. In particular, we study the generation method of the SPWM excitation source and propose an acoustic wave emission circuit to realize this pulse excitation. Finally, the simulation results prove that the excitation pulse generated by our proposed scheme has the characteristics of high stability of waveform and adjustable frequency, which indicates that the scheme is feasible and has a certain value for the research of reservoir detection method behind the oil and gas well casing.
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Key words
acoustic pulse excitation method,reservoir,behind-casing
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