APPLICATION OF THE SUBTLE OBJECT PROCESSING OF SEISMIC DATA TO SEQUENCE STRATIGRAPHY

With the development of high resolution sequence stratigraphy,it is necessary to use high resolution seismic exploration technology to do subtle object processing in order to seek concealed stratigraphic traps. Based on the Fourier transformation and with the characteristics of time and frequency localization,the wavelet theory can raise the signal to noise ratio and resolution of seismic data. In the study of the Jurassic sequence stratigraphy in Fudong Slope area of the Junggar Basin,the application of wavelet processing software WTDECON has greatly improved the signal to noise ratio and the resolution in seismic sections. In addition,six delta front fluxoturbidite fan sandbodies were ascertained in the Sangonghe Formation. By the subtle object processing of seismic data,seismic inversion and trace integration section processing,the distribution location of deep water fluxoturbidite fan sandbodies and the properties of sandstone were confirmed. This will provide reliable geophysical information for seeking concealed lithologic traps with self grown and self reserved oil and gas in the Jurassic of Fudong Slope area in the Junggar Basin.