Reflectivity inversion in frequency domain based on Geman norm constraint
Wang Benfeng1,2, Chen Xiaohong1,2, Liu Guochang1,2, Chen Zengbao1,2, Wang Xiannan3
1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China;
2. CNPC Key Laboratory of Geophysical Prospecting, China University of Petroleum (Beijing), Beijing, 102249, China;
3. Shenzhen Branch, CNOOC, Shenzhen, Guangdong 510240, China
Abstract：Reflectivity inversion in the effective frequency band with re-weighted iterative method based on Geman norm constraint can not only weaken high frequency noise, but also obtain high resolution reflectivity series. Inversion results can distinguish thin layers with thickness smaller than tuning thickness, and it is also robust with some noise immunity. Because of subsurface heterogeneity and viscosity, attenuation information in reflectivity inversion is used to eliminate wavelet influence and its attenuation, and to obtain more reliable reflectivity series which are useful for subsequent data processing and interpretation. Tests on synthetic seismic data demonstrate the validity of the proposed method.
王本锋, 陈小宏, 刘国昌, 陈增保, 王显南. Geman范数约束的频率域反射系数反演[J]. 石油地球物理勘探, 2014, 49(4): 667-671.
Wang Benfeng, Chen Xiaohong, Liu Guochang, Chen Zengbao, Wang Xiannan. Reflectivity inversion in frequency domain based on Geman norm constraint. OGP, 2014, 49(4): 667-671.
