| 发明名称 |
Method and apparatus for inducing elliptically polarized shear waves in an earth medium. |
| 摘要 |
<p>The present invention relates to an apparatus and method for generation of elliptically polarized shear waves in an earth medium using two shear wave vibrators (20, 22) engaged with the earth medium in cross-polarized attitude and driven at sweep rates having variable phase displacements by means of control circuitry (32, 36).</p> |
| 申请公布号 |
EP0256626(A2) |
申请公布日期 |
1988.02.24 |
| 申请号 |
EP19870304928 |
申请日期 |
1987.06.03 |
| 申请人 |
CONOCO INC. |
发明人 |
COLE, JACK H.;BAUMEL, ROBERT T.;GERGELY, JOHN S.;STRECKER, JOHN E. |
| 分类号 |
G01V1/02;G01V1/053 |
主分类号 |
G01V1/02 |
| 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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