Abstract:

To solve the general problems such as uneven energy, inconsistent wavelet and empty binning of the 3D seismic data among the multi-survey joint processing blocks, methods of energy optimized adjustment method based on fold coverage, cross correlation time shift computation and adjustment method among the blocks, residual static method after surface consistent predictive deconvolution and post-stack time migration after post-stack interpolation were applied to ensure the consistence of amplitude energy and wavelet characteristics among the blocks with no joint time shift. The result shows that the proposed key technologies can obviously improve the processing quality in both shallow and deep parts, and there is no spatial spurious frequency of the migration section with high signal to noise ratio.