BEAM STEERED BROADBAND MARINE SURVEY METHOD AND SYSTEM

摘要

A method for improving data resolution in a broad band marine seismic survey. The method includes towing a source array and a receiver array; calculating a non-vertical steering angle to improve a magnitude of a high frequency part of a shallow zone of subsurface reflections that arrive at a selected region of the receiver array over a magnitude of subsurface reflections that would arrive at the selected region of the receiver array for a substantially vertical imaging wave; generating an imaging wave to propagate substantially with the non-vertical steering angle relative to gravity; and recording seismic data corresponding to the imaging wave.

主权项

1. A method for improving data resolution in a broad band marine seismic survey, the method comprising:
towing a source array and a receiver array; calculating a non-vertical steering angle to improve a magnitude of a high frequency part of a shallow zone of subsurface reflections that arrive at a selected region of the receiver array over a magnitude of subsurface reflections that would arrive at the selected region of the receiver array for a substantially vertical imaging wave; generating an imaging wave to propagate substantially with the non-vertical steering angle relative to gravity; and recording seismic data corresponding to the imaging wave.