气枪震源高效采集作业模式

High efficient air gun source acquisition

气枪震源高效采集技术(SimSource技术)与常规作业的根本区别是采集作业时气枪激发间隔时间小于单炮记录时间,在采集作业时实施多个震源同时激发作业,缩短采集周期,提高地震施工效率。本文分析了 SimSource技术的关键因素,分别对 Independent Simultaneous Sweeping(以下简称 ISS)、Managed Spread and Sources(以下简称 MSS)、Distance separated Simultaneous Shooting(以下简称 DS3)和 Free Distance Shooting(以下简称 FDS)等作业模式进行了介绍,得出了 SimSource技术可以有效地提高气枪震源高密度采集作业效率的结论。

The fundamental difference between the air gun source efficient acquisition technology (SimSource technology) and the conventional operation is that the firing interval of the air gun is less than the recording time of the single gun during the acquisition operation. Multiple sources are simultaneously activated during the acquisition operation to shorten the acquisition period and improve the seismic construction efficiency. In this article, the key factors ofthe technology are analyzed through research of Simultaneous Sources technology, and so that we can further understand the different operating modessuch as Independent Simultaneous survey (ISS), Managed Spread and Sources (MSS), Distance separated Simultaneous Shooting(DS3) and Free Distance Shooting(FDS). It is concluded that SimSource technology can evidently increase marine seismic acquisition efficiency.