Layer | Fill | Outline |
---|
Map layers
Theme | Visible | Selectable | Appearance | Zoom Range (now: 0) |
---|
Fill | Stroke |
---|---|
Collaborating Authors
Results
Summary There is a growing interest in incorporating multiply scattered waves into modeling the Earth’s interior using radiative transfer theory. For thin beds, we derive the equivalence of the exponential decay of the transmitted wave predicted by the O’Doherty-Anstey formula with the coherent wave obtained from radiative transfer. This shows an underlying relationship between mean field theory and radiative transfer. Finally, we show how the incoherent field in radiative transfer opens the door to separate scatttering from intrinsic Q. Introduction Geophysicists have begun to investigate information about the medium hidden in multiply-scattered seismic waves in general (Hennino et al., 2001; Campillo and Paul, 2003; Wegler and Lühr, 2001), and via radiative transfer models, in particular (Wu and Aki, 1988; Margerin et al., 1999).
Summary Near- surface scattering can contaminate the arrival of energy from target reflectors. We describe a 3D imaging method, as a multi-channel alternative for short- wavelength static corrections, that is tested on laboratory data, excited and monitored with a computer controlled, non- contacting system. Application of the algorithm improves the continuity of arrivals that have been disturbed by a cavity in the surface of the models. Introduction When a wave front travels through a complex overburden, it is disturbed by scattering from heterogeneities. For a detailed structural image of the deeper subsurface it is important to minimize these disturbances in arrival time and amplitude of upcoming reflections.
Summary A 12-level 3D vertical seismic profile (VSP) is acquired as part of Weyburn Project with of Reservoir Characterization Project (RCP) at Colorado School of Mines. Travel times from direct arrivals of compressional sources are used to invert for Thomsen’s parameters for a transversely isotropic with a vertical symmetry axis (VTI) media. Near offsets are used to estimate the vertical travel time and normal moveout (NMO) velocity, while the non-hyperbolic moveout of all offsets are fitted to estimate the horizontal velocity. _ and d parameters are estimated from these velocities. A sensitivity and error analysis on the parameters that control the non-hyperbolic moveout equation is performed. Introduction RCP is characterizing a carbonate reservoir that is undergoing CO2 and water injection since 2000.
- North America > Canada > Saskatchewan (0.41)
- North America > United States > Colorado (0.25)
- North America > United States > New Mexico > Permian Basin > Delaware Basin > Upper Pennsylvanian > Vacuum Field > San Andreas Formation > San Andreas Formation > Upper San Andreas Formation (0.99)
- North America > United States > New Mexico > Permian Basin > Delaware Basin > Upper Pennsylvanian > Vacuum Field > San Andreas Formation > Lower San Andreas Formation > Upper San Andreas Formation (0.99)
- North America > United States > New Mexico > Permian Basin > Delaware Basin > Upper Pennsylvanian > Vacuum Field > Lovington Formation > San Andreas Formation > Upper San Andreas Formation (0.99)
- (9 more...)