An analysis of the time-lapse explosion of airgun array in marine seismic
Quan Hai-yan1,2,4, Chen Xiao-hong1, Wei Xiu-bo2, Guo Yi2, Luo Min-xue2, Song Xiang-yu3
1. China University of Petroleum(Beijing), Beijing 102249, China;
2. BGP Inc., CNPC, Zhuozhou, Hebei 072751, China;
3. Institute of Geophysics and Geomatics, China University of Geosciences(Wuhan), Wuhan, Hu-bei 430074, China
Abstract：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 we 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.
全海燕, 陈小宏, 韦秀波, 郭毅, 罗敏学, 宋翔宇. 气枪阵列延迟激发技术探讨[J]. 石油地球物理勘探, 2011, 46(4): 513-516.
Quan Hai-yan, Chen Xiao-hong, Wei Xiu-bo, Guo Yi, Luo Min-xue, Song Xiang-yu. An analysis of the time-lapse explosion of airgun array in marine seismic. OGP, 2011, 46(4): 513-516.
