Abstract:In some areas with complicated surface conditions, such as mountain, town, and reservoir nature reserves. Dynamite is prohibited in seismic acquisition. Although a variable recording system can provide full coverage on the prohibited zone, without shallow or near-offset data, great impacts may occur on near-surface velocity model inversion, velocity analysis and imaging. Therefore, it is necessary to use matching process technology in the seismic data which acquisited by dynamite combinate with vibroseis. However, the wavelets, amplitudes, frequency and phases of shots by mixed sources are inconsistent, which could cause illusion of fine interpretation. This paper proposes a high-precision matching processing method which can overcome the shortcomings of conventional matching filtering processing methods, which don't consider the influence of noise and the signal-to-noise ratio. This method removes the inconsistency of the data collected by using mixed sources, eliminates the differences caused by different shooting methods, and improves the S/N ratio and imaging quality of seismic data. Actual processing results show that the high-precision matching processing method with mixed sources is effective to remove data inconsistency and can be applied to merged seismic data processing.
曾华会, 王小卫, 苏勤, 雍运动, 刘桓, 孟会杰. 混合震源高精度匹配处理技术在中国西部复杂障碍区的应用[J]. 石油地球物理勘探, 2021, 56(3): 476-484.
ZENG Huahui, WANG Xiaowei, SU Qin, YONG Yundong, LIU Huan, and MENG Huijie. Research and application of mixed sources high-precision matching processing technology in the complex obstacle area in western China. Oil Geophysical Prospecting, 2021, 56(3): 476-484.
Brotz R,Marschall R,Knecht M. Signal adjustment of vibrseisand impulsive source data[J]. Geophysical Prospecting,1987,35(7):739-766.
[5]
Berhout A J.Least-squares inverse filtering and wavelet deconvolution[J]. Geophysics,1977,42(7):1369-1383.
[6]
Wiener N. Extrapolation,Interpolation and Smoo-thing of Stationary Time Series:With Engineering Applications[M]. Technology Press of The Massachusetts Institute of Technology,Cambridge,1947.
[7]
高少武,赵波,高轩,等. OBC水陆检数据匹配技术[J]. 石油地球物理勘探,2015,50(1):29-32.GAO Shaowu,ZHAO Bo,GAO Xuan,et al. A me-thod for OBC dual-sensor data matching[J].Oil Geophysical Prospecting,2015,50(1):29-32.
[8]
唐恩德,宋锡熊,陈志刚. 多种震源联合激发地震数据的处理方法[J]. 石油地球物理勘探,1997,32(增刊1):148-156.TANG Ende,SONG Xixiong,CHEN Zhigang. Processing method of seismic data jointly excited by multiple sources[J].Oil Geophysical Prospecting,1997,32(S1):148-156.
[9]
庄东海,肖春燕,许云,等. 四维地震资料处理及其关键[J].地球物理学进展,1999,14(2):33-43.ZHUANG Donghai,XIAO Chunyan,XU Yun,et al. 4D seismic data processing and its key[J]. Progress in Geophysics,1999,14(2):33-43.
王西文,周立宏. 三维地震资料拼接中的地震子波处理[J]. 石油物探,2002,41(4):448-451.WANG Xiwen, ZHOU Lihong. Wavelet transform used in the concatenation of 3-D seismic data sets[J]. Geophysical Prospecting for Petroleum,2002,41(4):448-451.
[12]
宋玉龙. 滩浅海地区地震勘探存在问题及其解决方法[J]. 石油物探,2005,44(4):343-347.SONG Yulong. Problems of seismic survey in neritic area and resolved methods[J]. Geophysical Prospecting for Petroleum,2005,44(4):343-347.
邬达理,姜游,陈竹梅. 串联匹配滤波法在混合震源资料处理中的应用[J].石油物探,2006,45(6):611-614.WU Dali,JIANG You,CHEN Zhumei. Application of cascade matched filtering in mixed source data processing[J]. Geophysical Prospecting for Petroleum,2006,45(6):611-614.