Method And Application Of High Resolution Processing In 3D Seismic Data

High resolution processing in 3D seismic data is a systems engineering. After our country working hard the technique has been preponderant internationally, such as energisation of field acquisition, incepting and REC, noise elimination, static correction, deconvolution,imaging by excursion and so on. These applied techniques have been suited with high resolution seismic prospecting. High resolution processing in 3D seismic data is an important part of high resolution seismic prosprecting, and include five facets: NMO-static correction of high accuracy, noise attenuation, swing compensate on surface consistent, band spreading, and imaging by excursion. It is the kernel how to spread effective band as possible in order to enhance the resolution. At present, the high resolution processing in 3D seismic data is more progressive than the old ways in 3D seismic data. Then the advanced ways of processing have good effect on actual data. It can offer geophysicist wealth of information.The research utilizes the good quality of actual data on basis of 3D seismic data. So on definite fidelity reflecting layer's character is of clarity, and the arrangement of reflecting layer is full, having stabilization of waveform and continuity of tracing, hence the resolution of production datum is increased consumedly in the whole work area.Using the static correction of refracted wave, we can enhance the precision of the static correction and make the section trusty.Through wiping off yawp of prestack and poststack, we can increase signal-to-noise ratio of data.By the technique of surface consistent we can improve the landscape orientation's coherence of seismic signal energy and enhance fidelity of section.If we combine many deconvolutions and enhance the resolution gradually, the seismic signal is spreaded band, and the wavelet is processed nicely, and at last the section plane is the same as the composite recording on the whole.Through the last excursion, We can see: Firstly Signal-to-Noise of section is high, and the phenomena of geology is plentiful. Whereafter every composite wave of the refracting layer is clear from T06 to T2, and the middle of the refracting layer has wealth of information. So the waveform is stable and continuously traceable. Lastly the direction of faultage is clear, and the breakpoint is unambiguous. Then the video frequency of T1 layer is to 70Hz, simultaneously the video frequency of T2 layer is to 60Hz.Thus we deliver the goods and meet the demand.