【摘要】 海上宽频地震采集技术不但能改善盐下、玄武岩下等深层构造成像,还能提高薄层、隐蔽圈闭、特殊岩性体等难识别油区成像品质,因而能有效提高地震资料的解释精度,降低勘探风险。近年来市场的迫切需求极大地推动了海上宽频地震采集技术的快速发展,国外相继出现了倾斜电缆采集、上下双缆采集、双检电缆采集、四分量拖缆采集等多种采集方法,国内在这一研究领域尚处于起步阶段。本文通过介绍上述几种技术的基本原理及效果,以期对国内相关研究起到参考和指导作用。更多还原

【Abstract】 Marine broadband seismic acquisition technology not only improves the pre-salt and pre-basalt geological imaging precision but also raises the imaging quality of difficult-to-identify reservoirs, such as thin layers, subtle traps and special lithologic bodies, thus effectively improving interpretation precision of seismic data and lowering the risks for exploration. The strong market demand has stimulated development of marine broadband seismic acquisition technology in recent years. A number of acquisition methods appeared abroad, such as slant streamers, over-under streamers, hydrophonevertical geophone(dual sensor) streamers and multi-component towed streamers. However, the domestic research is still in its preliminary stage in this area. This paper is focused on the fundamental principles of the above-stated technologies, aiming to offer references for the related study at home.更多还原