Marine vibrator sweeps

摘要

Marine seismic survey using one or more marine seismic vibrators, where the vibrator sweep function is based on a quality requirement, which may be a final image quality requirement or an environmental requirement. The sweep function may be nonlinear and the energy spectrum may not match the energy spectrum of an airgun.

主权项

1. A method for operating a marine seismic vibrator as a source in a marine seismic survey, the method comprising:
determining an image quality requirement and an environmental impact requirement, wherein the environmental impact requirement is a requirement of a limit on emitted energy at one or more frequencies in a sweep of the marine seismic survey; configuring a sweep function based on the image quality requirement and the environmental impact requirement; and sweeping the marine seismic vibrator according to the sweep function to produce a seismic source signal.