Wide azimuth data processing techniques and their applications
ZHANG Bao-qing1,2, ZHOU Hui1, ZUO Huang-jin2, WANG Zhe-wu2
1 State Key Laboratory of Earth Resources and Prospecting;CNPC Key Laboratory of Geophysics,Chinaa University of Petroleum(Beijing)Beijing 102249,China;
2. Dagang Branch of GRI,BGP Inc.,CNPC,Tianjin 300280,China
Abstract：Wide azimuth data acquisition leads a few problems in data processing,such as velocity variation with azimuth,azimuth-dependence travel time correction,azimuth-dependence anisotropy.For wide azimuth data(not full azimuth data),it is very crucial to form reasonable azimuth sectors which are favorable for processing and interpretation from real data.In this paper we propose a set of solutions including azimuth sector forming,azimuth accurate stack velocity estimation;azimuth-dependence travel time correction and azimuth anisotropic pre-stack migration.Improved results have been achieved with applications of these techniques,and show that our approaches are feasible.
