Sorry, you need to enable JavaScript to visit this website.
Menu
Login
  • Home
  • Measurement and dynamic wavefield correction for time-dependent water velocity changes Measurement and dyna ...
Technical Abstract

Measurement and dynamic wavefield correction for time-dependent water velocity changes

Back to Technical Content
Changes in water velocity produce significant 4D noise in time-lapse images. To be addressed accurately, the water-velocity problem requires two major ingredients: 1) water velocity must be estimated accurately at all acquisition times and for all shot/receiver locations, 2) time-variable corrections to the data must be dynamic to treat the full wavefield accurately. We present a new approach to parameterization of water-velocity changes which minimizes sensitivity to water depth. Dynamic correction of the wavefield is then achieved by designing 3D time-variable phase-shift operators. This is applied in a tau-px-py least-squares modeling process.
Download Resource

Publications

EAGE - European Association of Geoscientists and Engineers

Authors

Robert Zietal, Ross Haacke

Month

May

Copyright

© 2016 EAGE