METHOD AND DEVICE FOR MARINE SEISMIC ACQUISITION

摘要

Method and system for improving offset/azimuth distribution. The system includes plural streamers towed by a streamer vessel; a central source towed by the streamer vessel; first and second front sources located in front of the plural streamers along a traveling direction of the streamer vessel; and first and second large offset front sources located in front of the first and second front sources along the traveling direction. The offset distance between the first and second large offset front sources, along a cross-line direction, is larger than an offset distance between the first and second front sources.

主权项

1. A survey acquisition system comprising:
a vessel configured to tow plural streamers and a first source along an inline direction; second and third sources located at different cross-line positions relative to the first source along a cross-line direction, wherein the cross-line direction is substantially perpendicular to the inline direction and in a water plane; and fourth and fifth sources located in front of the plural streamers along the inline direction, wherein an offset distance between the fourth and fifth sources along the cross-line direction is larger than an offset distance between the second and third sources.