Publication Date:
2022-04-05
Description:
For several reasons the IS0'89 3D-seismic data are at hand not as conventional, phase-consistent stack so far but as 'envelope stack' only. Therefore, the common wave-field migration procedures cannot be applied to attain information on the spatially correct position of the particular reflector elements. To cope with this problem a simplified 3D-horizon migration program was developed at the DEKORP Processing Center Clausthal. It allows to migrate not the sejsmic traces of the IS0'89-3D survey themselves but the traveltime values for specific horizons derived by interactive picking with a 3D-seismic interpretation system on the basis of an envelope stack. The motivation, the basic assumptions and the principles of this procedure are outlined as well as the mathematical background and the particular processing steps. The migration results of some selected key horizons in the area of the KTB are depicted by isochrone maps and 3D-views. By this, a preliminary geological interpretation based upon the true position and shape of several detected seismic surfaces is enabled although the final processing, i. e. a phase-consistent stack of the entire JO-dataset (and its subsequent wave-field migration), has not been finished yet.
Language:
English
Type:
info:eu-repo/semantics/bookPart
Format:
application/pdf
