Joint use of gravity, seismic data advances Precaspian salt modeling, depth imaging

Significant progress in depth imaging of complex hydrocarbon basins has been achieved in the 1990s. In particular, it is remarkable for the study of salt dome structures. The progress was possible, first of all, due to the use of 3D multichannel data acquisition technologies and prestack depth migration (PreSDM).The performance of PreSDM, provided seismic data are acquired with advanced 3D technology, mainly depends on the validity of the velocity-depth model applied for migration. In complex media, the building of a valid model is a particular task that requires deep knowledge of the basin's features. Subject to the initial model accuracy, each model requires several adjustment itera...

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