| In drilling engineering,it is necessary to calculate and draw well trajectory.Firstly,the wellbore trajectory picture that drawn by well trajectory data can display the shape of the well.Secondly,comparing with design and real well can judge whether the real well meet design requirement.In the end,according to wellhead position in the same area decides whether to drill a new well to avoid collision between new well and old well.In the traditional wellbore trajectory visualization software,it is imperfect to deal with the wellbore trajectory data,most of the casing program draw in the two-dimensional and it is not intuitive.In this paper,through analyzing the demand of wellbore trajectory visualization drawing system decide to implement mainly in three aspects.Firstly,processing the data.Converting the raw well data into well format data that can implement wellbore trajectory three-dimensional visualization and casing program three-dimensional visualization.Through coordinate transformation,many of wellbore trajectory can be shown in the same coordinate system easily.Then,drawing by data.In under the premise of drawing three-dimensional wellbore trajectory,the casing program also were draw in three-dimensional environment.Doing texture mapping in casing program in order to enhance the realism,and implement rotation,translation,scaling and other interactions of three-dimensional wellbore structure.In the end,carrying out the collision detection,and achieving the selection of any two well collision detection.According to the actual demand analysis,the wellbore trajectory visualization draw system were implemented with the help of Qt development platform based on C++ language and three-dimensional visual graphics development library Open Scene Graph technology.This research can provide some help and reference for drilling engineering technicians,and it has some practical value. |
