Quality control cube for seismic data

Details Quality control cube for seismic data Quality control cube for seismic data

G - Physics

01

V

G01V 1/34 (2006.01)

Patent

CA 2424201

Attributes of a seismic data set that are indicative of the quality of the seismic data are displayed in a quality control (QC) hypercube. The axes of the hypercube may be the source position, the source line, the receiver position and a processing step. In a pre-migration QC cube, two of the three axes of the cube are defined by the locations of seismic data. In a migrated QC cube, two of the three axes are defined by the migrated output bin position of processed seismic data. The third axis of the cube contains information about the quality of the data. The QC attributes may be simple amplitudes, or they may be attributes derived from the amplitudes of the seismic data, such as RMS values and/or spectral values. In a migrated QC cube, the attributes may include seismic velocity, seismic fold and distribution of source-receiver azimuths.

Selon l'invention, des attributs d'un ensemble de donn~es sismiques indiquant la qualit~ de ces donn~es sont affich~s dans un hypercube de contrÙle de qualit~. Les axes de cet hypercube peuvent Útre la position de la source, la ligne de la source, la position du r~cepteur et une ~tape de traitement. Dans un cube de contrÙle de qualit~, avant transfert, deux des trois axes du cube sont d~finis par les emplacements des donn~es sismiques. Dans un cube de contrÙle de qualit~ apr­s transfert, deux des axes sont d~finis par la position du casier de sortie, apr­s transfert, des donn~es sismiques trait~es. Le troisi­me axe du cube contient des informations relatives ~ la qualit~ des donn~es. Les attributs de contrÙle de qualit~ peuvent Útre de simples amplitudes, ou bien des attributs d~riv~s ~ partir des amplitudes des donn~es sismiques, tells que des valeurs efficaces (RMS) et/ou des valeurs spectrales. Dans un cube de contrÙle de qualit~, apr­s transfert, les attributs peuvent inclure la vitesse sismique, le pli sismique et la r~partition des azimuts du r~cepteur de la source.

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