Tomographic inversion over diffraction CFP operators in structurally complex areas

In the universe of tomographic techniques aiming to determine the subsurface velocity field, inversion over CFP Operators (CFPOs) reduces depth-velocity ambiguity. Its main drawback is the operator estimation for very complex areas, where conventional CFPO estimation is damaged by the non-continuity of events and diffractions. We overcome this problem using diffractions in Common Offset Gathers (COG) to estimate CFPOs. A synthetic example based on a geologic-geophysics model of the Santos Basin (offshore Brazil) is used to validate the idea. An overview of the inversion workflow is presented in which a Singular Value Decomposition (SVD) pseudo-inverse technique is explored.