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AssigneePGS Geophysical AS
InventorMaiza Bekara
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A system and method controls impulsive source activations in a blended acquisition marine seismic survey. A component of the system generates a sequence of dither values deterministically and stores the sequence of dither values, or source activation indicators derived therefrom, in a non-transitory medium readable by a control system operable to execute shot points during the survey responsive to the values stored in the medium. According to some embodiments, generating the dither values comprises iteratively selecting from a fixed set of candidate dither values to produce a candidate sequence of dither values. The selecting is based on evaluating one or more quantitative measures of randomness and one or more quantitative measures of separation exhibited by at least a portion of the candidate sequence of dither values. Generated sequences improve deblending results by reducing coherence exhibited by the dither values in the sequences.
In a technological process for controlling impulsive source activations in a marine seismic survey of the kind in which reflected energy from two or more sources is recorded in a blended fashion and is later separated during a deblending operation, and in which a control system executes dithered shot points during the survey responsive to stored source activation indicators, the specific improvement of causing one or more computing devices to perform actions comprising:
A system for controlling impulsive source activations in a marine seismic survey, comprising:
A non-transitory computer readable medium having instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform steps comprising:
Dependencies are inferred from the claim text.