Anisotropy analysis and parameters extraction on 3D VSP common receiver gathers
Bai Hai-jun1,2, Sun Zan-dong1,4, Li Yan-peng3
1. Lab for Integration of Geology and Geophysics, China University of Petroleum(Beijing), Beijing, 102249, China;
2. Research Institute of CNOOC Shenzhen Ltd., Guangzhou, Guangdong, 510240, China;
3. Developmeht and Production Seismic Division BGP Inc.,CNPC, Zhuozhou, Hebei, 072751, China
Abstract：Anisotropy analysis and parameters extraction based on the nonhyperbolic moveout is discussed in this paper.The nonhyperbolic moveout,which is more accurate on long-spread,is derived under VTI hypothesis.The main idea is as follows: Firstly the feasibility of this method is demonstrated by synthetic data.Then,it is applied to a filed VSP data,where the anisotropy analysis including VTI and azimuth anisotropy is performed on 3D VSP common receiver gathers.Finally,extraction of interval anisotropy parameters from the effective parameters is discussed and tested on both model and field VSP data.As a result,the data in this area shows strong VTI and some azimuthal anisotropy.
白海军, 孙赞东, 李彦鹏. 3D VSP共检波点道集各向异性分析及参数提取[J]. 石油地球物理勘探, 2011, 46(增刊1): 53-59.
Bai Hai-jun, Sun Zan-dong, Li Yan-peng. Anisotropy analysis and parameters extraction on 3D VSP common receiver gathers. OGP, 2011, 46(增刊1): 53-59.
