发明名称 |
Matching P wave and shear wave sections in seismic exploration |
摘要 |
In seismic exploration, the ratio of the velocities of compressional and shear wave data is automatically determined by cross-correlating a compressional wave trace against a window of the shear wave trace to produce a set of correlation coefficients as a function of P wave time. The shear wave window is shifted by an increment of time. The steps of cross-correlating and shifting the window are repeated to form a grid of correlation coefficients. Points on the grid represent the correlation coefficients between a point on one trace and a point on the other trace. The path of maximum correlation coefficients, or maximum likelihood functions, through the grid identifies the Vp/Vs profile. This path is selected by a process which includes selecting the best path between two points and then increasing the number of points in the sequence until the best path through the grid is determined.
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申请公布号 |
US4686657(A) |
申请公布日期 |
1987.08.11 |
申请号 |
US19850688656 |
申请日期 |
1985.01.03 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
DELLINGER, J. A.;GOINS, NEAL R.;REILLY, THERESA A. |
分类号 |
G01V1/28;G01V1/30;(IPC1-7):G01V1/36 |
主分类号 |
G01V1/28 |
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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