An Analysis of the Time-Lapse Explosion of Airgun Array in Marine Seismic
详细信息
- 责任者：Quan Haiyan (China University of Petroleum ; Beijing 102249 ; China) ; Chen Xiaohong
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(4)
- 关键词：air guns ; 海洋环境 ; marine environment ; 数据采集 ; data acquisition
- 页码：p.513-516
- 图表：8 illus., 10 refs.
- 分类号：1600
- 出版序号：1237
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
The airgun array is widely used nowadays as a source in towed-streamer seismic survey. The array pattern can be used to attenuate the ghost caused by a source. In this paper, the authors propose a method for ghost attenuation using a time-lapse explosion of sub-airgun arrays hanged in different water depths. The method improves the characteristics of source wavelet and signal-to-noise ratio. The theoretical simulation and the actual data show that the time-lapse explosion of airgun array enlarges the frequency spectrum of the source wavelet and improves energy both in low frequency and high frequency.