Abstract:
In this paper, the design and development of the software system for the combined interpretation of pre stack is introduced. The system is based on NEWS platform, an oil and gas comprehensive interpretation system platform developed by the research institute of petroleum exploration technology of Sinopec. Through the business resources and service interfaces provided by the NEWS platform, the data of pre stack seismic data are partially overlapped by the point, line and plane, which is convenient for users to quickly analyze the advantages of overlay parameters, real-time pre stack AVO attributes (such as gradient P, slope G, curvature C profile) and the direction of Pyramid to noise and other functions. The reservoir prediction and hydrocarbon detection can be carried out more conveniently by geological workers. On the basis of automatic tracing along the time line, by means of simulating ellipse and cosine fitting analysis of the selected surface element, using the variation of the amplitude of the target layer with azimuth offset/incident angle, the general trend effect of micro cracks in the statistics of the surface elements, the development direction and strength of the crack are estimated. A set of integrated pre stack oil and gas analysis system is formed, which is a set of pre stack fracture detection, pre stack gather attribute analysis, AVO attribute intersection analysis and results visualization tools.