Design Method and Effect Analysis of 3D Block Acquisition Geometry in Loess Plateau

The huge thick loess plateau has the characteristic of dry, loose, high attenuation for seismic wave, and itʹs hard to get high S/N ratio data. According to the practical condition of survey area, the survey area was divided and 3-d block acquisition geometry was designed to acquire seismic data. after improving shot condition, optimizing acquisition geometry, increasing fold times and using multi-domain iteration static correction, the result showed that the block acquisition geometry and shot condition choosing were proper for data acquisition geometry and the S/N ratio of acquired data was high. The data processing procedure was suitable for data process, and the final result was good.