17 citations · 74 across the 29 of their papers we have counts for
5 papers · 1 filter
On the azimuthal dependence of orthorhombic fractures for vertical seismic profiles using the ellipsoidal approximation
P. Contreras
The analysis of travel times with move-out velocities represents one of the most widely used seismic signal processing techniques for the exploration and monitoring of Oil and Gas…
Inversion of normal moveout for monoclinic media
Grechka Vladimir, Contreras Pedro, Tsvankin Ilya
Multiple vertical fracture sets, possibly combined with horizontal fine layering, produce an equivalent medium of monoclinic symmetry with a horizontal symmetry plane. Here, we sho…
Inversion of walkaway VSP data in the presence of lateral velocity heterogeneity
Vladimir Grechka, Ilya Tsvankin, Pedro Contreras
Multi-azimuth walkaway vertical seismic profiling (VSP) is an established technique for the estimation of in situ slowness surfaces and inferring anisotropy parameters. Normally, t…
Perfectly matched layers simulation in 2-D VTI media
P. Contreras, G. Larrazabal, C. Florio
Implementing computational boundary conditions, such as perfectly matched layers PML does have advantages for forwarding modeling of the earth's crust. The mathematical modeling of…
Ellipsoidal impulse responses in fractured media
Pedro Contreras, Luis Rincon, Jose Burgos
Multiple vertical fracture sets, combined with horizontal fine layering produce an equivalent medium of orthorhombic or monoclinic symmetry. This is particularly important in fract…