Study On Three-dimensional Visualization Modeling Of Coal Seam Gas Well Trajectory

With the accelerating development of CBM exploration,directional well,horizontal well drilling technology is becoming more and more perfect,has occupied more and more important role in the development of coalbed methane in the construction of auxiliary software are also constantly upgrading.Therefore,it is necessary for the development of field drilling and the need of drilling design to study the 3D visualization modeling technology of coalbed methane wells.The main contents of this paper can be divided into the following aspects:(1)After the consult literature material,well track at home and abroad are summarized and the research status of 3 d visualization technology,master the basic concepts of coalbed methane well track,description methods and parameters and borehole trajectory representation and transformation of coordinates method,lays the foundation for the further research on algorithm.(2)Analysis of the commonly used model for describing the well track algorithm,and realized the cylindrical helical interpolation method,the spline function interpolation method of calculating borehole trajectory method,determines the minimum curvature interpolation method as this paper realize 3 d visualization research of well track algorithm.(3)Analyzed the borehole trajectory method of 3 d modeling,realized based on the slice method to realize 3 d modeling shows that the method of wellbore trajectory,determines the sectioning modeling as this research to realize 3 d visualization of three-dimensional modeling method.(4)Aanalyzed the 2d visualization method of borehole trajectory,and established the visualization of 3d borehole trajectory visualization and the main functions of software.The 3d hole trajectory simulation algorithm is implemented and the program code is written,and the 3d visualization of coal seam gas well trajectory is realized based on OpenGL software.