Solving The Conflicting Dips Problem In Complex Media By Considering All Possible Dips In CRS Method
A. Shahbazi, D. Ghosh, M. Soleimani and J. Mann
Event name: IPTC 2014: International Petroleum Technology Conference
Session: Session 53: E&P GEOSCIENCE - Geophysical Integrated Solutions
Publication date: 19 January 2014
Info: Extended abstract, PDF ( 427.61Kb )
Price: € 20
In the existence of conflicting dips, where the seismic events are bent, faulted, or pulled up by the salt dome or anticlines or even intersect another structural event, some parts of the events may not be imaged well in stacked section and may produce uncertainty in the final migrated section for interpretation. A modified version of the CRS stack, the common diffraction surface (CDS) stack, is a method that could solve the problem of conflicting dips that may happen frequently in complex and semi-complex structures. This strategy has some advantages that improve the continuity of reflection events as well as diffractions in the presence of conflicting dip situations. To investigate whether it could solve the seismic imaging problem in such media, we processed the Sigsbee 2A synthetic data and a real seismic data set with the new method. Finally, the stacked result of Sigsbee 2A and the results of the poststack depth migration of the real data also proved that the continuity of the events is fully preserved and there are no gaps in the diffraction events, even where they intersect other events. This method could resolve some of the ambiguities of imaging in complex structures.