Abstract: It is key to protect various valid information in processing of ultra large offset seismic data. Alternatively, larger offset seismic data provide more nonhyperbolic information. So application of the conventional NMO method to data can result in over moveout. In this paper, in order to solve the problem , at first the authors have analyzed moveout problem and nonhyperbolic moveout method principle in transversely isotropic media and combined the characteristic of the ultra large offset seismic data, then discussed how to process ultra long offset seismic data and how to use wide-angle reflect information. Results through the actual data processing have showed that the method is effective in desert region.

Key words: desert region, ultra long offset, moveout, wide-angle reflect, data disposal