Bibliographic Citation
| 8,233,349 | |
| System for generating a beam of acoustic energy from a borehole, and applications thereof Loading...
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| 07/31/2012 | |
| US patent application 12/870,440 | |
| Vu, Cung Khac (Houston, TX); Sinha, Dipen N. (Los Alamos, NM); Pantea, Cristian (Los Alamos, NM); Nihei, Kurt T. (Oakland, CA); Schmitt, Denis P. (Katy, TX); Skelt, Christopher (Houston, TX) | |
| Los Alamos National Laboratory (LANL), Los Alamos, NM (United States) | |
| USDOE | |
| AC52-06NA25396 | |
| Chevron U.S.A. Inc. (San Ramon, CA) | |
| In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion. | |
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