Effect of Navigation Attributes on 4D Seismic Repeatability

C014 Effect of Navigation Attributes on 4D Seismic Repeatability Abstract 1 A methodology has been implemented to study the influence of variations in navigation parameters on seismic repeatability for marine 4D surveys. Synthetic seismic traces representative of real acquisition geometry are generated for base and monitor surveys using a wavefront propagation technique. The same velocity-depth model and source characteristics are used to simulate the seismic response of the two data vintages. Consequently all differences observed on synthetics are due to changes in acquisition parameters between base and monitor surveys. We establish statistical relationships between seismic repeatability and changes in acquisition