热声学
钻孔
地球物理成像
多孔介质
声学
地质学
地球物理学
流量(数学)
流体力学
遥感
环境科学
多孔性
物理
机械
岩土工程
作者
Chang Liu,Xin Mao,Chang Wang,Rebecca Liyanage,Juan Heredia Juesas,Rubén Juanes,José Ángel Martínez-Lorenzo
摘要
Abstract Accurate predictions of fluid flow, mass transport, and reaction rates critically impact the efficiency and reliability of subsurface exploration and sustainable use of subsurface resources. Quantitative dynamical sensing and imaging can play a pivotal role in the ability to make such predictions. Geophysical thermoacoustic technology has the potential to provide the aforementioned capabilities, since it builds upon the principle that electromagnetic and mechanical wave fields can be coupled through a thermodynamic process. In this letter, we present laboratory experiments featuring the efficacy of thermoacoustic imaging in the monitoring of preferential flow of water in porous media. Our laboratory experimental equipment can be readily packaged in a form factor that fits in a borehole, and the use of multiple acoustic transducers—which can be combined with volumetric coding techniques—has the potential to provide quasi‐real‐time imaging (0.5 Hz video rate) of regions in close proximity (a few meters) of an open field well.
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