Abstract
Global coherency inversion, which consists of maximizing a semblance function calculated from prestack seismic data, has been proposed for estimating the velocity-depth model with no necessity for prestack or poststack travel time picking. At each iteration of inversion, multi-offset travel time calculation is performed and the semblance value is computed on prestack gathers along these time curves. Layer velocities and zero-offset times for principle reflectors are chosen as inversion parameters. In this work, coherency optimization is based on a new Regularized Global Approximation method (unlike simulated annealing or genetic algorithms, it includes a predictor-corrector procedure with significantly reduces the number of evaluations of the objective function.
Original language | English |
---|---|
Pages | 1081-1083 |
Number of pages | 3 |
DOIs | |
State | Published - 1995 |
Externally published | Yes |
Event | 1995 Society of Exploration Geophysicists Annual Meeting, SEG 1995 - Houston, United States Duration: 8 Oct 1995 → 13 Oct 1995 |
Conference
Conference | 1995 Society of Exploration Geophysicists Annual Meeting, SEG 1995 |
---|---|
Country/Territory | United States |
City | Houston |
Period | 8/10/95 → 13/10/95 |