![]() |
![]() |
![]() |
![]() | Velocity-independent ![]() ![]() | ![]() |
![]() |
The second alternative to get VTI interval parameters comes from
the integral formulation of the
-
moveout signature in
equation 7. The derivation is detailed in Appendix C. We first compute
and
then, applying the chain rule,
. Solving for
and
, we arrive at the following relations:
The processing becomes easier if it is accomplished in
-
with
automatic slope estimation. First,
-
transform unveils the
position of equal slope events. Second,
and
are measured automatically (without event picking) on the
-
transformed CMP gather. The quantity
can be
estimated as the
finite difference of
values
computed according to velocity-independent moveout equation
15. The zero-slope time
function is still
needed to map the interval parameter estimated using equations 27
and 28 to the correct vertical time (Table
1).
![]() |
![]() |
![]() |
![]() | Velocity-independent ![]() ![]() | ![]() |
![]() |