Study On Prestack Accurate Imaging Technique Of3D Seismic Data And Its Application To The Central Buried-hill In Zhao Jia Of Liaohe Depression

This project Studies on Prestack Accurate Imaging Technique of3D Seismic Data and itsApplication to the Central Buried-hill in Zhao Jia of Liaohe Depression.It is based on theactual requirements of the Liaohe depression exploration central Buried-hill to centralBuried-hill.Zhao area new acquisition of3D seismic data and other neighboring5previousacquisition of3D seismic data are studied as the research object, in view of the seriousinterference noise, multiple development, latent Yamauchi Maku weak reflection energy, lowfrequency, each piece of information characteristics high difference, complicated structure,difficult insider imaging research difficulty, we mainly carried out prestack improve SNR,prestack amplitude compensation and energy adjustment, prestack migration imaging methodbased on the three main research contents. The development of cross arrangement to surfacewave, frequency domain predicted to active jamming,3D RNA prestack random noiseattenuation based on covering number, energy adjustment, Kicrchhoff prestack depthmigration, migration and a series of improving Buried-hill insider signal-to-noise ratio andimage quality of new technology. The research results will be applied to the centralBuried-hill in Zhao area of500square kilometres of3D seismic data processing project, TheBuried-hill insider imaging effects have been obviously improved, the signal-to-noise ratiohas been improved a lot, and the central Buried-hill and the east sag contact relationship moreclear, various geological information is more abundant, through the geological interpretation,geologists implement and correct a series of faults, found a number of favorable structuraltraps, and deployed ZhaoGu7,ZhaoGu8,ZhaoGu5wells obtains the good exploration result.Through this research, summarizes the suitable for central Buried-hill data prestack noiseattenuation technology series and prestack accurate imaging technology series, which willprovide future throughout central Buried-hill and further exploration of Liaohe depression hasprovided the powerful technical...