Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2006-09-19
2006-09-19
Keith, Jack (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S038000, C367S047000, C367S053000, C367S073000, C702S010000
Reexamination Certificate
active
07110323
ABSTRACT:
A Method for Interpreting Seismic Data Using Duplex Waves is described. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary reflections, it has been difficult or impossible to use such methods for locating substantially vertical events or boundaries. The method of the present invention uses secondary reflections to locate substantially vertical events by gathering common source or receiver traces for processing. Wave fields of these gathers are continued downward to the level of the base boundary, then at each discrete depth level, a seismic image of sub-vertical events is formed. The downward-continued gathers correspond to the travel time of the wave from when it left the source or the receiver point, was reflected from the base boundary, and arrived to the corresponding point of the discrete level of wave-field continuation. In order to increase the noise tolerance of the resulting image of the target sub-vertical event-seismic images, obtained from the common source and receiver gathers, may also be summed together or stacked.
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Gornyak Zynoviy V.
Kostyukevych Alexander S.
Marmalyevskyy Naum
Mershchiy Viktor V.
Roganov Yuriy V.
Hughes Scott A.
Keith Jack
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