双检与上下缆地震数据联合成像

双检拖缆地震采集数据可以有效压制电缆鬼波，提高资料信噪比，而上下缆地震数据可以增强信号的低频并拓展其高频。将这两种非常规技术应用于南海北部潮汕拗陷进行高精度地震数据采集试验，对所获取的地震数据进行了联合成像处理分析，结果表明两种新技术对潮汕拗陷中深层地震信号弱、同相轴不连续、信噪比低的地震资料品质都有明显的改善。

Joint imaging of dual sensor and over under streamer data

Cable ghost can be well suppressed and data S/N ratio can be much improved when dual-sensor seismic acquisition is adopted. And over-under streamer acquisition can not only enhance data low-frequency components but also broaden data high frequency components. We use both dual-sensor and over-under streamer to conduct a test acquisition in Chaoshan Depression, Northern South China Sea, and then carry out a joint processing of the seismic data. Compared with conventional seismic, our test results show that the proposed acquisition and joint processing can obtain data from middle and deeper layers with stronger reflection energy, more continuous events, and higher S/N ratio, and data is well imaged.