Method for migration before summation
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United States of America Patent
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Jul 25, 2000
Grant Date -
N/A
app pub date -
Jun 26, 1998
filing date -
Oct 30, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for determining migration before summation including recording seismic reflection traces, for constituting a collection of traces to be migrated before summation and without weight correction. The traces being classified according to a given criterion and using a velocity model. The method including determining, for each point of interest M in a domain (X, Z), at least one line of slope determined on the basis of a line of slope map, in determining the specular rays associated with one point M and for the line of slope, and in computing the time and amplitude characteristics of each of the specular rays for deducing therefrom the reflection factor in each point M.
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