Multiple attenuation by prestack migration in the OVT domain
Duan Wensheng1,2, Li Fei2, Li Shiji2, Huang Luzhong2, Peng Gengxin2
1. School of Geophysics & Information Technology, China University of Geosciences (Beijing), Beijing 100083, China;
2. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
Abstract:Through research on the OVT, we have found that prestack migration in the OVT domain can suppress multiples. Using high density seismic data (small trace interval), we extract offset vector tiles and analyze reasons of multiple attenuation by prestack migration in the OVT domain. We conclude that the main roles of multiple attenuation by prestack migration in the OVT domain is that the OVT gathers have larger offset range than common offset gathers.