发明名称 |
DEVICE AND METHOD FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF |
摘要 |
In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.
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申请公布号 |
US2011080805(A1) |
申请公布日期 |
2011.04.07 |
申请号 |
US20100793420 |
申请日期 |
2010.06.03 |
申请人 |
CHEVRON U.S.A., INC.;LOS ALAMOS NATIONAL SECURITY, LLC, LOS ALAMOS NATIONAL LABORATORY |
发明人 |
VU CUNG KHAC;SINHA DIPEN N.;PANTEA CRISTIAN;NIHEI KURT T.;SCHMITT DENIS P.;SKELT CHRISTOPHER |
分类号 |
G01V1/48 |
主分类号 |
G01V1/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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