Converted mode seismic survey design

Details Converted mode seismic survey design Converted mode seismic survey design

2011-02-22

2011-02-22

Lobo, Ian J (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

C367S038000, C367S051000, C367S056000, C702S014000

Reexamination Certificate

active

07894299

ABSTRACT:
Method for designing a converted mode (PS or SP) seismic survey to accomplish specified vertical and lateral resolution objectives at target depth. An equation (181) is provided for determining the minimum bandwidth required for a desired vertical resolution at a selected scattering angle, as a function of incident and reflected wave velocities, one of which is the P-wave velocity and the other is the S-wave velocity. A second equation (182) is provided for determining migration acceptance angle from the desired vertical and lateral resolutions. Source and receiver apertures may then be determined by ray tracing. Finally, a third equation (183) is provided for the maximum bin size to avoid aliasing, given the migration acceptance angle and a maximum frequency needed to achieve the bandwidth requirement. Source and receiver spacing may then be based on the maximum bin size.

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