Least square reverse time migration in high resolution imaging of near surface

作者：Huang Jianping^*; Cao Xiaoli; Li Zhenchun; Sun Yunsong; Li Chuang; Gao Guochao

来源：Oil Geophysical Prospecting, 2014, 49(1): 107-112.

• Complex near surfaces
• High-resolution imaging
• Imaging process
• Least Square
• Low-Frequency Noise
• Near surfaces
• Reverse time migrations
• Seismic data processing

Near surface high resolution imaging in seismic data processing is attracting great attention. Reverse time migration (RTM) from two way wave equation is considered a good way to image the steep structure. However low frequency noise generated during the RTM imaging process is relatively high, which affects high resolution imaging of near surface. To challenge this problem, we propose in this paper a least square reverse time migration (LSRTM) method. Test results on a complex near surface velocity model indicate that LSRTM is much better than RTM for structure high resolution imaging and energy preservation.

• 出版日期2014
• 单位中国石油大学（华东）