分布式光纤声学传感系统在地球物理勘探领域内的研究进展

    Advances in research on the distributed optical fiber acoustic sensing system in the field of geophysical exploration

    • 摘要: 分布式声波传感(DAS)技术作为最先进的声场检测技术之一, 能够对与光纤相互作用的环境振动和声场信息进行分布式、长距离、高精度的实时检测。DAS技术中的光纤勘探系统解决了常规检波器在复杂地质环境中成本高、布设难度大等问题。近年来, DAS技术得到了快速的发展, 尤其在需要长期、大规模布设的监测应用场景中得到了迅速的发展, 但其相关研究成果较为发散, 系统性认识较少。为深入了解DAS技术在地球物理勘探领域内的研究进展, 更好地开展后期研究, 本文通过文献调研, 对DAS技术自身的发展进程与其近期在地球物理勘探领域内取得的研究成果, 按照油气、海洋和环境工程3个不同的应用场景进行系统的分类总结, 着重关注DAS技术近年来在不同方向上的发展进程、数据处理方面的研究进展以及已经取得成果的相关文献; 最后, 对现阶段基于DAS采集系统的发展趋势和亟待解决的问题进行了概括, 对未来DAS的发展前景进行了分析。

       

      Abstract: Distributed acoustic sensing (DAS) technology, one of the most advanced sound field detection technologies, can achieve distributed, long-distance, and high-precision real-time detection of the ambient vibration and sound field information interacting with optical fiber. The optical fiber exploration system of the DAS technology solves the problems of high cost and deployment difficulty of conventional geophones in complex geological environments. In recent years, the DAS technology has experienced rapid development, especially in monitoring application scenarios that require long-term and large-scale deployment. However, its systematic understanding is insufficient due to divergent research results. To further understand the research advances of the DAS technology in geophysical exploration for more effective subsequent research, this study systematically classified and summarized the development history of the DAS technology and its recent research results in geophysical exploration based on the oil and gas, marine, and environmental engineering application scenarios through literature research. This study focused on the development process of the DAS technology in different directions, the research advances in data processing, and relevant literature with specific results. Finally, this study generalized the development trend and urgent problems of the DAS acquisition system, analyzing the DAS development prospect.

       

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