Study And Application On Amplitude Preserved Processing In B Areas

With the development of oil and gas exploration in our country, seismic migration mapping technology has faced some higher acquirement. It's more important to protect the information of the seismic data with the continuous improvement of the precision of the oil and gas exploration. In the process of seismic data processing,methods of the noise suppressing,amplitude compensation and deconvolution are keeping the real information of seismic data or not, which affects the subsequent migration imaging,explain inversion and reservoir prediction results directly. But now, it lacks an effective and systematic method to chose a way to protect the information from damage. In this paper, it summarizes the applicability of the image processing method of the seismic data at different stages and analysis application in the actual research area. The main achievements and innovations are as follows:1. The use of the combination of dividing area filter and filter method in the phase noise suppression,and evaluate the characteristics of the results by combining the residual method and amplitude statistical properties,which basis on predecessors,further perfect of evaluation criteria.2 .According to the characteristics and methods in amplitude compensation section,choosing the combination of spherical spreading compensation and surface consistent amplitude compensation method, just keeping amplitude compensation transverse longitudinal energy compensation equilibrium in the process. It has obvious change description by comparing the amplitude of the attribute.3. Link of deconvolution, deconvolution method will have a change in the seismic amplitude, according to the actual situation to choose the most appropriate convolution method, namely the amplitude change smaller, finally by selecting the superposition method to ensure that this link need high resolution requirements.Through the comparison, amplitude attribute to determine the superposition method of sex.4.Choosing the B area as an example, the methods of the noise suppression,amplitude compensation and deconvolution are applied to the actual seismic data, and then determine the practical through the amplitude attribute.