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Numerical simulation of ultrasonic wave transmission experiments in rocks of shale gas reservoirs
Chen, Qiao1,2,3,4; Yao, Guanghua5; Zhu, Honglin1; Tan, Yanhu1; Xu, Fenglin1
2017
摘要Shale gas reservoirs have risen in importance in China's newpower source exploration and development program. The investigation of the propagation of ultrasonic waves in shale forms the basis for the full waveform application of acoustic logging data to the exploration of shale gas. Using acoustic wave theory, initial conditions, vibration source conditions, and stability conditions are developed in combination with experimental background of ultrasonic wave transmission. With improved boundary conditions, we performed numerical simulations of the ultrasound transmission experiments in shale using the high-order staggered-grid finite difference method (second-order in the time domain and fourth-order in the space domain). With programs developed within MatLab, the results obtained from numerical simulations agree well with experimental results based on physical models. In addition, using snapshots of the wave field that give a microscopic perspective, the propagation laws for ultrasonicwaves can be analyzed. Using this method, human error is avoided, transmission experiments costs can be reduced and efficiency improved. This method extends the scope of experimental investigations regarding the transmission of ultrasonicwaves in a shale gas reservoir with increasing stratification, and thus has great theoretical value and practical significance. (C) 2017 Author(s).
DOI10.1063/1.4974749
发表期刊AIP ADVANCES
ISSN2158-3226
卷号7期号:1页码:11
通讯作者Zhu, HL (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
收录类别SCI
WOS记录号WOS:000395789900064
语种英语