The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Jun. 03, 2010
Device and method for generating a beam of acoustic energy from a borehole, and applications thereof
Cung Khac VU, Houston, TX (US);
Dipen N. Sinha, Los Alamos, NM (US);
Cristian Pantea, Los Alamos, NM (US);
Kurt T. Nihei, Oakland, CA (US);
Denis P. Schmitt, Katy, TX (US);
Christopher Skelt, Houston, TX (US);
Cung Khac Vu, Houston, TX (US);
Dipen N. Sinha, Los Alamos, NM (US);
Cristian Pantea, Los Alamos, NM (US);
Kurt T. Nihei, Oakland, CA (US);
Denis P. Schmitt, Katy, TX (US);
Christopher Skelt, Houston, TX (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Los Alamos National Security LLC, Los Alamos, NM (US);
Abstract
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.