3D super-virtual refraction interferometry

Three-dimensional supervirtual seismic refraction interferometry

“…Furthermore, we assume that the refracted rays follow the same ray paths in 2D supervirtual interferometry (SVI), however, this 13 concept does not apply to the 3D SVI. The process of integration of sources and receivers pairs adequately takes care of the ray path problem in 3D SVI (Lu et al, 2014).…”

“…Applying the conventional 2D SVI on 3D seismic refraction data suffers a setback because the 2D SVI assumed a stationary position for source-receiver pairs which is not applicable in 3D case. Lu et al (2014) proposed 3D SVI algorithm which generates virtual and supervirtual traces and integrate them along source and receiver lines respectively before stacking. I have proposed 3D SVI method that improve the generation of supervirtual traces.…”

“…Al-Shuhail et al (2013) and Al-Shuhail (2015) developed algorithms which were used successfully to enhance the first arrival of microseismic data and improve automatic picking of first arrivals of 2D seismic data, respectively. The 2D SVI methods has the limitation of ray-path problem when applied directly on 3 3D case (Lu et al, 2014). I have proposed 3D SVI algorithm which adequately takes care of ray-path problem.…”

Seismic, Super-Virtual Refraction Interferometry

“…There are several differences between the 2D and 3D SVI approaches, where the stationary positions of the sourcereceiver pairs could be any place along the x-y plane, also the SNR enhancing effect could be limited due to the limited number and irregularity of the survey lines and azimuthal range of arrivals. Lu et al (2014) suggested integrating along the source or receiver lines, which enhances the SNR without the requirement of knowing the stationary locations. In addition, the amplitudes SVI traces are largely strengthened by integration, which is helpful to further enhance the SNR.…”