Seismic high frequency information recovery constrained by well data
Liu Hanqing1,2, Zhang Fanchang1, Wang Nashen3, Zhang Jingdong4, Ju Shu-xia5, Yu Zhilong4
1. School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong 266580, China;
2. Research Institute, Shenzhen Branch, CNOOC, Guangzhou, Guangdong 510240, China;
3. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710056, China;
4. Geological Research Center, GRI, BGP Inc., CNPC, Zhuozhou, Hebei 072751, China;
5. Information Technology Center, BGP Inc., CNPC, Zhuozhou, Hebei 072751, China
Abstract：We propose in this paper a method to recover high-frequency information of surface seismic data and improve the resolution using the spectral relationship between well data and seismic data. Firstly we extract surface seismic recoverable bandwidth from the well data with the matching pursuit algorithm. Then we obtain the stable amplitude spectra of the well data using the Gaussian amplitude spectra fitting algorithm. Therefore, we build the mapping relationship between Gaussian fit spectra in the frequency domain, and add Cauchy constraint item to increase the stability of the algorithm. Finally we apply the mapping relationship to the entire seismic data to broaden the bandwidth. So we enhance the energy of high-frequency weak signal and improve thin bed identification on seismic data. Application results show that the proposed method can not only obtain broader band but also higher resolution seismic information. So thin bed and complex reservoir identification can easily be achieved on formation parameter inversion sections on this kind of seismic data.
刘汉卿, 张繁昌, 王纳申, 张敬东, 鞠淑霞, 于志龙. 井资料约束的地震资料高频恢复[J]. 石油地球物理勘探, 2015, 50(5): 890-895.
Liu Hanqing, Zhang Fanchang, Wang Nashen, Zhang Jingdong, Ju Shu-xia, Yu Zhilong. Seismic high frequency information recovery constrained by well data. OGP, 2015, 50(5): 890-895.
Li Guofa,Yue Ying,Xiong Jinliang et al. Experimental study on seismic amplitude attribute of thin interbed based on 3D model. OGP,2011,46(1):115-120.
[2]
Countiss M L. Frequency-enhanced imaging of stratigraphically complex,thin-bed reservoirs:A case study from South Marsh Island Blcok 128 Field. The Leading Edge,2002,21(9):826-836.
Lu Wenkai,Ding Wenlong,Zhang Shanwen et al. A high-resolution processing technique for 3D seismic data based on signal sub-space decomposition. Chinese Journal of Geophysics,2005,48(4):896-901.
Gao Jinghuai,Yang Senlin and Wang Daxing. Quality factor extraction using instantaneous frequency at envelope peak of direct waves of VSP data. Chinese Journal of Geophysics,2008,51(3):853-861.
Cao Danping,Yin Xingyao,Zhang Fanchang et al. On the interpretation method research and application of crosswell seismic data. Progress in Geophysics,2008,23(4):1209-1215.
[10]
Chopra S,Alexeev V and Sudhakar V. High-frequency restoration of surface seismic data. The Leading Edge,2003,22(8):730-738.
Gong Jian,Liu Haojie. Using cross-hole seismic data to improve resolution of surface-seismic data. OGP,2009,44(4):451-456.
[12]
Zhao Xiaolong,Wu Guochen,Yin Xingyao et al. High resolution recovery via spectral match between surface seismic and cross-well seismic data. SEG Technical Program Expanded Abstracts,2013,22:1462-1466.
Cao Danping,Yin Xingyao,Zhang Fanchang et al. Joint inversion method research of multiscale seismic data. Chinese Journal of Geophysics,2009,52(4):1059-1067.
[14]
Mallat S,Zhang Z. Matching pursuit with time-frequency dictionaries. IEEE Transactions on Signal Processing,1993,41(12):3397-3415.
Li Min,Sheng Yi. Study on application of Gaussian fitting algorithm to building model of spectral analysis. Spectroscopy and Spectral Analysis,2008,28(10):2352-2355.
[17]
Fu Chen,Wang Nanping. Gaussian fitting in gamma-ray spectral decomposition. Nuclear Science and Techniques,2010,21(4):214-217.
