de MIHAIL IANAS, CONSTANTIN POPESCU
Intreprinderea de Prospectiuni Geologice si Geofizice pentru Hidrocarburi,
Bucuresti
MIGRATION IN TIME OF SEISMIC SECTIONS BY WAVE EQUATION METHOD
(Abstract)
Accurate methods for the solution of migration of seismic sections have been
developed. The partial differential equations considered include the 15-degree
equation, as well as higher order approximation (45-degree equation). We have
described numerical methods for wave equation migration based on Fourier transform
techniques. The migration consists of the extrapolation of the wave downward
by operating on the Fourier coefficients, followed by the inverse Fourier transformation.
We tested the wave equation method on the seismic sections from the Getic Nappe.
The migration examples represent results obtained by two different methods:
wave equation method and classical diffraction method. It is clearly superior
to wave equation method. This is demonstrated beyond any doubt by our results,
particularly for deeper reflectors.