3D Visualization Of Seismic Data Based On VTK

3D visualization technology can clearly display the internal structure of geological body,make the seismic interpretation personnel more intuitive and visual observation of geological structure,and lay the foundation for accurate interpretation of seismic data.According to the more accurate interpretation of seismic data,seismic data processing personnel can achieve more accurate positioning drilling,oil and gas production and other follow-up work,reduce the blindness of mining,and avoid the waste of funds.3D visualization technology is not only a tool of seismic exploration,but also a good application in the drawing and display of seismic data,which is mainly applied in the geological level.For the traditional seismic data rendering method is the surface rendering method,which only uses the seismic section and slices in all directions to display and interpret the 3D seismic data.This display method has certain limitations,it can not let researchers observe and study the internal geological structure intuitively and vividly.Therefore,a 3D seismic data visualization system for oil is designed Gas exploration is of great significance.Firstly,this paper introduces the development of 3D visualization theory of seismic data at home and abroad,and describes the background and research significance of this paper.Then,it briefly introduces and analyzes the seismic exploration,visualization theory and process and other related technologies.Finally,the requirements of 3D visualization system of seismic data are analyzed,and the design and implementation of 3D visualization system of seismic data are carried out by using the visualization theory of scientific calculation.Basically,the requirements of the system are realized,and the results are as follows:(1)Firstly,QTDesigner is used to design the start interface,operation interface and function button of the program,and pyqt5 technology is used to integrate the relevant functions of the system into the operation interface.(2)In pycharm development environment,the design and development of 3D seismic data display system based on C / S mode is completed by using Python language and VTK 3D visualization library technology.The three-dimensional visualization system of seismic data makes the seismic processing personnel observe the seismic data volume more intuitively and vividly,which can help researchers grasp the geological structure quickly and comprehensively,accurately and efficiently analyze the geological phenomena and laws hidden in the three-dimensional seismic data,and find out the storage and distribution of oil and gas.(3)By using pyqt5 technology and VTK visual database technology,not only the functions of 3D display,cutting,slicing,isosurface extraction,color mapping,data volume expansion and region of interest display of seismic data volume are realized,but also the user’s interactive operation of system interface and seismic data volume is realized,such as dynamic cutting of seismic data volume,dynamic extraction of isosurface,and The seismic data volume rotates and moves.The system is a computer program implemented by Python + pyqt5 + VTK technology in pycharm development environment,in which pyqt5 technology is used for user interface design and development,and VTK visualization library technology is used for 3D display of seismic data.The system can display the seismic data in three dimensions.On this basis,it can help the seismic processing personnel to interpret the seismic data better and provide research tools for professional researchers.