Establishment And Application Of 3d Imaging System For Oil And Gas Gathering And Transportation

The technical theory and technical route of digital oilfield has been becoming the main power of the energy field.As a national economic pillar industry,oil enterprises' construction has begun to move towards the three-dimensional geographic information system,and the data fields have been established in the major oil fields,three-dimensional GIS visualization system has become the core component part of that.Three-dimensional GIS takes three-dimensional space as the research object,and uses the methods of modeling,expression,management,operation,analysis and decision-making to deal with the information related to the three-dimensional object.Compared with two-dimensional GIS,the data volume increases,object type and spatial relationship adds,it is not simply the expansion of 2D GIS.In recent years,China has developed rapidly in the research and construction of oil and gas field supporting facilities and visualization system.There has been a climax of theoretical research and practical application.But how to combine the production application system and visual platform design closely,there is still no good practice and experience.This paper takes the digital construction of Sinopec North China Oil Company as an example,analyzes the feasibility,demand,technical route and system function of the three-dimensional visualization system of petrochemical enterprises in China,and takes the main reservoir block of North China Oil Company as the research object,design and development three-dimensional imaging system,and study the key technology.The main results are as follows:1,Design and develop "Sinopec North China Company oil and gas gathering and transportation three-dimensional imaging system."The article uses the theory of virtual visualization,3D GIS,3S technology and database technology,based on Skyline basic component platform and B / S software structure model,combined with Oracle10 g database,design the "Sinopec North China Company oil and gas gathering and transportation three-dimensional image system".2.Study the theory of visualization expression and build the database of the three-dimensional model of oil field,and a three-dimensional image environment is established.The polynomial transform method is used in geometric correction of the remote sensing image,and the multi-resolution image fusion is carried out by PANSHARP fusion method to generate the color orthorective remote sensing image map and integrate it with the DEM data through TerraBuilder to realize the visualization of the 3D terrain expression.The visualization of 3D objects is realized by the combination of professional modeling software and TE Pro,and the visual representation of some special features is realized by means of image mapping method and transparent texture method.On the basis of the three-dimensional visualization,according to the requirements and norms of the geographic information system,the mass data of the gathering and transportation network are effectively organized and managed,and the geographic information system suitable for the management of the pipeline network is established.3,Study key technical research of the system.This paper studies the key technologies of shortest path analysis,Pipe network optimization technology and profile analysis.The principle and realization of Dijkstra algorithm are expounded in detail.The Dijkstra algorithm is used to determine the The best route to a certain location(such as well site,accident scene,etc.),to provide guidance for the selection and auxiliary decision-making,greatly saving the human power and material resources;Optimization algorithm is introduced to optimize the design and application of the integrated well;According to the distribution of the objects,access its location information,draw a profile.With the gradual popularization and in-depth use of the three-dimensional image system of oil and gas gathering and transportation,the change of the ground engineering management planning method which based on high-resolution image has been promoted,it greatly reduced the cumbersome work and greatly improved the office efficiency and the decision-making management level and economic benefits.