Type
ArticleKAUST Department
Center for Subsurface Imaging and Fluid ModelingEarth Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2014-08-05Online Publication Date
2014-08-05Print Publication Date
2014-08-05Permanent link to this record
http://hdl.handle.net/10754/593351
Metadata
Show full item recordAbstract
Super-virtual refraction interferometry enhances the signal-to-noise ratio of far-offset refractions. However, when applied to 3D cases, traditional 2D SVI suffers because the stationary positions of the source-receiver pairs might be any place along the recording plane, not just along a receiver line. Moreover, the effect of enhancing the SNR can be limited because of the limitations in the number of survey lines, irregular line geometries, and azimuthal range of arrivals. We have developed a 3D SVI method to overcome these problems. By integrating along the source or receiver lines, the cross-correlation or the convolution result of a trace pair with the source or receiver at the stationary position can be calculated without the requirement of knowing the stationary locations. In addition, the amplitudes of the cross-correlation and convolution results are largely strengthened by integration, which is helpful to further enhance the SNR. In this paper, both synthetic and field data examples are presented, demonstrating that the super-virtual refractions generated by our method have accurate traveltimes and much improved SNR.Citation
Kai Lu*, Abdullah AlTheyab, and Gerard T. Schuster (2014) 3D super-virtual refraction interferometry. SEG Technical Program Expanded Abstracts 2014: pp. 4203-4207. doi: 10.1190/segam2014-0822.1Publisher
Society of Exploration GeophysicistsAdditional Links
http://library.seg.org/doi/abs/10.1190/segam2014-0822.1ae974a485f413a2113503eed53cd6c53
10.1190/segam2014-0822.1