Research And Application Of Fault System Identification Technology Based On Canny Algorithm

In the field of seismic data processing,the world has studied a variety of methods for reservoir prediction in complex tectonic zones.However,the geological structure of the fault system in the stratum is complex and the in fluencing factors are often varied,which makes it more and more difficult to discover new oil,and the exploration cost and risk are increasing.Therefore,the reservoirs in complex areas of fault systems have become an important new area of exploration and development.In order to better reflect the edge of the geological body and thus accurately and effectively explain the seismic data,this paper studies and applies the Canny edge detection method in the identification of the seismic data fracture system in the actual work area.It can identify the edge information such as faults and cracks on the seismic section,and facilitate the interpretation of seismic data.In seismic exploration,due to some complicated factors,the noise pollution of seismic data is serious and the signal-to-noise ratio is low,the effects of seismic data processing,interpretation and reservoir prediction are affected to some extent,which will bring certain errors to the subsequent seismic signal processing and analysis.The Canny algorithm includes filtering processing,but it will cause bad effects when encountering special boundaries such as interrupt layers and cracks in complex structural regions.In this paper,several different diffusion filtering methods are discussed in detail,and some researches on some anisotropic diffusion filtering algorithms are improved.Finally,a construction-oriented filtering equation is obtained.Different anisotropic diffusion filtering methods are used to process the noisy model and the actual seismic data,through comparative analysis,the advantages and disadvantages of each method are revealed and the superiority of the structure-oriented filtering is highlighted.When describing complex structural formations,using only one attribute method does not display the formation information well.We study and apply the seismic coherence properties of frequency domain frequency division based on wavelet transform,and combine Canny edge detection method and frequency division coherence method,and the complex geological body boundary information is displayed on the section and the slice respectively,enriching the content of the single seismic coherence attribute,and determining the size and distribution of the complex fault zone in the seismic data.Based on the frequency-coherent coherent processing,Canny edge detection is used to restore the real structural features of the underground,and a more comprehensive analysis result is obtained,which enhances the recognition effect on the complex geological structure of the research area and highlights the geological body boundary information of complex fracture systems.The comprehensive application of Canny edge detection method,structural guidance filtering and frequency division coherence method improves the accuracy of seismic data interpretation and provides a powerful basis for subsequent reservoir characteristics research and reservoir description.