Methods and systems that combine wavefields associated with generalized source activation times and near-continuously recorded seismic data

摘要

Systems and methods to correct source responses and perform source deghosting of a pressure or particle motion wavefield recorded using near-continuous recording of seismic data along a vessel track with generalize source activation times. The methods and systems receive a near-continuously recorded seismic data and generate a near continuous wavefield for approximately stationary-receiver locations. Time windows of different temporal lengths are applied to traces of the near-continuous wavefield in approximately stationary-receiver locations in order to compute common-receiver gathers. The common-receiver gathers are corrected source wavefield response and source ghost effects and are combined in weighted sums to generate broadband seismic data. method of correcting source related effects in near-continuously recorded seismic data receive near-continuous wavefield 1 401 correct for receiver motion to obtain 1402 near-continuous wavefield in approximately stationary-receiver positions for each common-receiver trace 1 403 for each time- window t emporal 1 404 length 'or each time window 1405 correct source elements to -1 406 same activation time y another time window form cornrmon-receiver gather 140 8 rect source-wave field responses and source ghost effects FIG. 14 brothers repoal legt cobine corrected common- aothe N receiver gathers taereturn