The Research On Multiple Attenuation And Quality Control In Real-time Processing Of Marine Seismic Exploration Data

Because of field equipment,environment and geological condition influence,all kinds of noises will be brought,when seismic exploration in the ocean,where multiplexes are particularly developed and difficult to suppress.These noises will have a serious influence on subsequent process and interpretation.Therefore,in real-time processing of marine seismic exploration,how to effectively suppress multiple waves and strictly complete quality control job has always been an important research topic.At present,domestic and foreign researchers and field processors continue to study the suppression of multiple waves in depth,and carry out new attempts to develop a variety of multiple attenuation techniques,and achieved some results.Firstly,this paper discusses the related principle of multiple wave,systematically analyses the technology and method of multiple wave suppression,and systematically discusses the method and principle,application condition and current situation,effect and existing problems of the current multiple wave suppression technology commonly used in real-time processing.For real-time processing,the most important thing is high timeliness;at the same time,it can meet the requirements of processing according to the navigation harness;but the hardware configuration requirements can't be too high,so for different data,it is necessary to apply targeted and applicable processing technology and process.For the collected seismic data for ocean exploration,we must make a detailed analysis of multiple wave types and characteristics firstly,and then apply different methods to verify the corresponding understanding and method effects.This paper considers the time difference between one wave and multiple waves from a 3D perspective.In addition to the two dimensions of interception time ? and parabola curvature p,a dimension Y that is the vertex offset at the parabola relative to the zero offset distance is added,and the vertex drift parabola Radon transformation is realized,which greatly improves the accuracy and processing effect of Radon transformation.In this paper,the application of SRME method is reformed,the key parameter of matching phase subtraction operator length is adopted,we use the frequency division thought,and the protection ability of primary wave is increased.In this paper,through the practice exploration,it is considered that relative to the seismic data whose multiple's order is not obvious,the pressurization effect of prediction deconvolution is more obvious at near offset,but at the far end it is still not ideal,so we should consider the combination with other methods of multiple wave suppression.Moreover,The method of multiple attenuation for wavefield extension has obvious advantages in attenuation multiple that are related with the bottom of the sea,and is more suitable for real-time processing.In view of that the advantages and disadvantages of different methods are different,and it is difficult to use a single method to solve complex multiple problems,in this paper,a set of progressive combination of different methods and technologies to process multiple wave attenuation is studied,and its application effect is verified by actual data.At the same time,a set of strict and complete multi-wave attenuation quality control process is established,and a comprehensive quality control is done at each step of denoise to ensure the rationality and reliability of attenuated multiple wave.