发明名称 |
SYSTEM AND METHOD FOR INVESTIGATING SUB-SURFACE FEATURES OF A ROCK FORMATION USING COMPRESSIONAL ACOUSTIC SOURCES |
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 |
US2012120766(A1) |
申请公布日期 |
2012.05.17 |
申请号 |
US201113292908 |
申请日期 |
2011.11.09 |
申请人 |
VU CUNG KHAC;SKELT CHRISTOPHER;NIHEI KURT;JOHNSON PAUL A.;GUYER ROBERT;TEN CATE JAMES A.;LE BAS PIERRE-YVES;LARMAT CARENE S.;LOS ALAMOS NATIONAL SECURITY;CHEVRON U.S.A. INC. |
发明人 |
VU CUNG KHAC;SKELT CHRISTOPHER;NIHEI KURT;JOHNSON PAUL A.;GUYER ROBERT;TEN CATE JAMES A.;LE BAS PIERRE-YVES;LARMAT CARENE S. |
分类号 |
G01V1/40 |
主分类号 |
G01V1/40 |
代理机构 |
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代理人 |
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地址 |
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