发明名称 |
DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE |
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 acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.
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申请公布号 |
SG186150(A1) |
申请公布日期 |
2013.01.30 |
申请号 |
SG20120088894 |
申请日期 |
2011.05.06 |
申请人 |
CHEVRON U.S.A. INC.;LOS ALAMOS NATIONAL SECURITY LLC |
发明人 |
VU, CUNG KHAC;SINHA, DIPEN N.;PANTEA, CRISTIAN;NIHEI, KURT T.;SCHMITT, DENIS P.;SKELT, CHRISTOPHER |
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