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A Study on the Regularization of OVG Data and the 3D Visualization MethodNormal access

Authors: X. Wang, Y. Zhang, F. Li, L. Qian, J. Li, R. Li, D. Han and M. Tang
Event name: 79th EAGE Conference and Exhibition 2017
Session: Seismic Anisotropy - Understanding the Fracture Influence
Publication date: 12 June 2017
DOI: 10.3997/2214-4609.201700543
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.34Mb )
Price: € 20

Summary:
OVG (Offset vector gathers) data is unable to be used for interpretation directly, although it is generated from wide-azimuth high-density acquisition through OVT (offset vector tile) migration and contains the anisotropic information. For getting visual 3D gather display and randomly extracting gather profiles and slices on the basis of OVT migration data, an offset-azimuth domain 5D interpolation method is proposed in this paper. By interpolating through rectangular rotation data regularization (RRDR) firstly instead of the conventional fan-shaped data regularization, it overcomes the shortage of the uneven folds between far and near offsets, improves the fidelity of data before and after the regularization, achieves the cylindrical display of OVG gather as well as the random extraction and display of the common offset gather, common azimuthal gather and time slices. It lays a good foundation for prestack anisotropy interpretation.


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