论文部分内容阅读
新疆塔里木盆地大庆探区位于巴东断陷构造带附近,为沙漠覆盖区,是塔里木盆地几个沙漠低信噪比地区之一。由于受地表和地震地质条件的限制,野外采集的原始记录品质较差,在记录上形成了很强的浅层折射、多次折射干扰、低频干扰和各种随机干扰。各类干扰波覆盖整张记录,使有效反射波变成短反射波同相轴,信噪比低,是地震资料处理的主要障碍。本文列举大量的实际资料,通过对静校正、去噪、DMO和偏移技术的研究,总结出了一套适合于沙漠低信噪比资料的处理方法。
The Daqing exploration area in the Tarim Basin, Xinjiang, is located near the Badong Fault Zone and is a desert-covered area. It is one of several low SNR areas in the Tarim Basin. Due to the limitation of surface and seismic geological conditions, the original records collected in the field were of poor quality, and strong superficial refraction, multiple refraction interference, low frequency interference and various random disturbances were recorded. Various types of interfering waves cover the entire record, making the effective reflected waves become short reflected wave events with low signal-to-noise ratio, which is the main obstacle to the seismic data processing. In this paper, a large amount of actual data is listed. Based on the research on static correction, denoising, DMO and migration techniques, a set of processing methods suitable for desert low signal-to-noise ratio data is summarized.