Design And Realization Of The 3D Display System Of Oil Reservoirs Based On Qt

With the continuous advancement of reservoir description and computer technology,traditional geological work methods,which can only manifest the geological features of reservoirs in two-dimensional maps,have been gradually replaced by three-dimensional visualization.The modern reservoir three-dimensional visualization technology mainly utilizes computer graphics technology and other techniques to three-dimensionally grid the reservoirs.First,drawing a grid according to the results of processing the original data volume and assign different attribute values to each grid so that a three-dimensional data volume is formed in line with the rules of three-dimensional spatial distribution.Second,using three-dimensional display interaction technology to slice,process sections and carry out calculations and analysis.Finally,based on the results of the above calculations and analysis,the geological structure,microscopic characteristics and reserves of oil and gas reservoirs can be comprehensively evaluated.This thesis first introduces the development status of three-dimensional visualization of reservoirs around the world,as well as reasons for selecting this topic.Through reading relevant literatures at home and abroad,the knowledge of oil deposit and 3d visualization technology is acquired and then facilitates the design of the requirements and overall framework of the 3d display system of oil reservoirs based on Qt.With relevant experiments and techniques,various modules and functions of the reservoir three-dimensional display are set in place.Finally,the development of the entire reservoir 3D display system can be finished by integrating and testing all module functions.The overall framework of the reservoir 3D display system mainly includes 4 major functional modules: reservoir data management module,reservoir grid model building module,multi-data 3D fusion display and capacity prediction module.Firstly,the reservoir data management module mainly explains the management method of the reservoir work area data and the original data analysis method,completes data coordination of the entire reservoir display system,and provides data preparation for the specific three-dimensional display of the subsequent reservoir;Secondly,the reservoir three-dimensional grid building module mainly includes the reservoir corner grid model,the reservoir triangular prism mesh model and the reservoir tetrahedron mesh model.The texture mapping technology is used to render the three grid models and the interpolation algorithm is used to optimize the display of the three mesh models.Thirdly,the multi-data three-dimensional fusion display module mainly completes the superimposed display of the data of the reservoir model,including the fusion of the velocity field and the reservoir mesh model,and the enhancement of the reservoir permeability.Finally,to provide users with the most practical capacity forecast display,reliable production guidance for oil and gas resources production in real time is available.In the reservoir three-dimensional visualization system,Qt is used to complete the interactive interface production,and Coin3 D technology is to finish the three-dimensional visualization and interaction.Combined with system testing,the reservoir three-dimensional display system is continuously optimized,so that the system can fully meet the actual requirements and user's expectations,thus facilitating the production and development of oil and gas resources.The development of this system not only can improve the current technology,but also help form a set of reservoir visualization software with independent intellectual property rights.