海洋宽频地震采集系统及其应用

Marine broadband seismic acquisition system and its application

盖永浩 李列 欧阳敏

中海石油（中国）有限公司湛江分公司，广东 湛江 524057

Zhanjiang Branch of CNOOC Ltd., Zhanjiang 524057, China

受鬼波的影响，常规的海洋地震采集资料地震频带较窄、分辨率低。为尽量削减鬼波的影响，设计了海洋宽频地震采集系统。该系统的激发设备由常规的平面震源改进为立体震源，接收设备由常规的水平拖缆改为不等深的斜缆。依据新的设计方案，可有效减小震源鬼波和电缆鬼波的干扰。海洋宽频地震采集系统在实际生产中应用效果良好，地震频带明显拓宽，地震分辨率提高，地层的成像效果明显改善。

Due to the influence of ghost waves, the common marine seismic data has a narrow frequency band and low resolution. In order to minimize the influence of ghost waves, a marine broadband seismic acquisition system was designed. The shot equipment of the new system was improved from a conventional planar source to a stereo source. The receiving equipment was changed from conventional horizontal streamer to unequal slant cable receiving. According to the new geometry, the interference of the source ghost and the cable ghost will be effectively reduced. The marine broadband seismic acquisition system has a good application effect in actual production, the seismic frequency band is obviously widened, the seismic resolution is improved, and the imaging effect of the formation is improved significantly.

10.6056/dkyqt202002012