发明名称 |
METHOD OF DETERMINING THE RATIO OF THE VELOCITIES OF COMPRESSIONAL AND SHEAR WAVES IN SUBTERRANEAN FORMATIONS |
摘要 |
<p>F-0707 A METHOD OF DETERMINING THE RATIO OF THE VELOCITIES OF COMPRESSIONAL AND SHEAR WAVES IN SUBTERRANEAN FORMATIONS Maximum likelihood estimation theory is applied to the determination of the ratio of P-wave velocity to S-wave velocity (Vp/Vs) from P-wave and S-wave seismic sections obtained along the same line of exploration. For a certain statistical model, the optimal estimate for Vp/Vs is determined, and shown to be equivalent to maximizing the simple mathematical correlation between P-wave and stretched S-wave seismogram segments. The maximum likelihood method provides a data-dependent formula for the mean square error associated with the Vp/Vs estimate. Alternatively, the latter formula provides a measure of the Vp/Vs information contained in the data. The information measure also provides optimal weighting for computing multitrace Vp/Vs averages, and provides for the determination of the statistical error in such averages.</p> |
申请公布号 |
CA1179762(A) |
申请公布日期 |
1984.12.18 |
申请号 |
CA19820394674 |
申请日期 |
1982.01.21 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
THOMAS, STEPHEN W.;OTIS, ROBERT M. |
分类号 |
G01H5/00;G01V1/30;(IPC1-7):G01V1/28 |
主分类号 |
G01H5/00 |
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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