The Establishment Of Three-dimensiona Visualization Environment For Geosteering Based On Multi-source Information

Due to the complicated geological conditions, many drilling data are imprecise, uncertain and nonnumerical.Traditional data analysis of unidimensional data is one-sided and isolated, and it is difficult to establish information links between two adjacent Wells.So based on the multi-source information of three-dimensional visualization technology in the application of geosteering project, not only provide advanced visual auxiliary measure for oilfield production,but also has great significance for oilfield digitalization construction.On the basis of analyzing the domestic and foreign related information, geosteering of multi-source information sources are analyzed, and the multi-source information preprocessing method is discussed, and redundant information is eliminated.Then the spatial interpolation method are compared on the horizontal and vertical, select out cubic spline interpolation method in order to establish space geometric model;Calculated geosteering parameters involved in the engineering and physical property,lay the foundation for subsequent modeling;According to the field data to establish the geosteering three-dimensional visualization environment,and draw relevant properties along the wellbore trajectory.Use the D-S evidence theory to modify the model, then update model in real-time.Finally is to operator the three-dimensional environment, such as rotating, zooming,cutting and the application of three-dimensional visualization environment in geosteering.Results show that the use of three-dimensional visualization environment established in this paper can be used for real-time monitoring, timely adjustment,operation in geosteering process and it played a positive role on-the-spot guidance for drilling.