发明名称 |
sistema e método para investigação de recursos subsuperficiais de uma formação rochosa |
摘要 |
A system and method for investigating rock formations outside a borehole are provided. The method includes generating a first compressional acoustic wave at a first frequency by a first acoustic source; and generating a second compressional acoustic wave at a second frequency by a second acoustic source. The first and the second acoustic sources are arranged within a localized area of the borehole. The first and the second acoustic waves intersect in an intersection volume outside the borehole. The method further includes receiving a third shear acoustic wave at a third frequency, the third shear acoustic wave returning to the borehole due to a non-linear mixing process in a non-linear mixing zone within the intersection volume at a receiver arranged in the borehole. The third frequency is equal to a difference between the first frequency and the second frequency. |
申请公布号 |
BR112013011870(A2) |
申请公布日期 |
2016.08.23 |
申请号 |
BR20131111870 |
申请日期 |
2011.11.09 |
申请人 |
CHEVRON U.S.A INC;LOS ALAMOS NATIONAL SECURITY LLC |
发明人 |
CARENE S. LARMAT;CHRISTOPHER H. SKELT;CUNG KHAC VU;JAMES ALAN TEN CATE;KURT TOSHIMI NIHEI;PAUL ALLAN JOHSON;PIERRE-YVES LE BAS;ROBERT A. GUYER |
分类号 |
G01V1/46 |
主分类号 |
G01V1/46 |
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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