海洋二维双船拖缆与宽频带地震采集实验

双船拖缆地震采集可以布设灵活的观测系统，如形成大炮检距、增加覆盖次数、中间激发提供两个方向照明等，进而改善复杂构造的地震成像效果。同时，宽频地震技术日益受到重视，通过大容量宽频震源激发，变深度拖缆接收，并进行数据去鬼波处理，达到拓宽频带的效果。综合双船拖缆与宽频采集的优势所开展的实验表明，成像剖面的浅层分辨率得到提高，中深目标层揭示效果有了改善，该技术在构造成像难点区值得尝试。

A dual-vessel broadband seismic acquisition experiment

With dual-vessel towing streamers,we can deploy flexible seismic acquisition geometry.This acquisition geometry has various advantages such as larger offset,higher common mid-point (CMP) folds,dual-azimuth illumination (split spread),etc.At the same time,the large volume broadband source can be used in the seismic acquisition,and variable depth towed-streamers will help de-ghosting during the data processing.All these will greatly improve deep target imaging.So we have carried out a dual vessel seismic broadband acquisition experiment.Final seismic sections show better imaging and higher resolution on both shallow layers and deep targets.This confirms the effectiveness of the proposed acquisition approach and it is worth to use in complex subsurface areas.