Method and system for seismic imaging and earth modeling using beam tomography
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United States of America Patent
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Apr 21, 2015
Grant Date -
Apr 28, 2011
app pub date -
Oct 27, 2009
filing date -
Oct 27, 2009
priority date (Note) -
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Abstract
A beam tomography computer implemented method and system for generating improved seismic images and earth models without dependence on reflector structure is disclosed. Recorded seismic data is transformed into data beams which are compared to forward modeled beams using an earth model having a velocity model to compute raypaths and a seismic image to specify the reflectors. The tomographic updates to the earth model and velocity model are based on misalignments between the data beams and the same beams forward modeled from the velocity model and the seismic image. The updated earth model and seismic image better describe the true propagation of the beams through the earth.
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