The Application of Comprehensive Refraction Static Correction Method in Qaidam Basin

Under the constraint of the surface structure investigation data and by using refraction static correction method on seismic reflection records, we can invert accurate and reasonable surface structure model, and furthermore, calculate shot and receiver static correction values. We select survey line 04314 of Beijixing area in Qaidam basin to construct seismic numerical modeling, and do seismic processing by using several different static correction methods to deal with the model data and the corresponding raw seismic data. The result is that the error of the comprehensive refraction static correction method is minimal and its overlay effect is the best. The comprehensive refraction static correction method combines the advantages of the model static correction method and the refraction static correction method. It not only solves the short wavelength static correction problem that affects the section signal-to-noise ratio, but also solves the long wavelength static correction problem that generates fictitious structures.