Key Technological Research Of Wellbore Visualization For While Drilling

With the expand scale and the development of oil and gas exploration and exploitation forms,the amout of oil and gas resources are becoming less and less.most of the oil and gas exploitation has turned to small scale reservoir and thin layer chromatography(TLC),so that the conventional drilling technology has been unable to suit the current situation of the development of oil and gas.Since the modern information technology to support the geosteering as a comprehensive type of drilling technology has been developed,it can effectively solve the problems about the development of oil and gas resources at present.Visualization technology,especially 3D visualization technology has become the LWD geosteering,is one of the key technologies which can make the oil and gas drilling process image and intuitive to show up,through the data visualization of drilling process and drilling stratigraphic,which also can monitor,analyse,control and decision making in real-time.The establishment of digital wellbore and the deployment of relevant information are the important researches in the visualization of drilling geological orientation domain.During the process of drilling,well trajectory data is one of the most commonly used engineering data meanwhile the well logging data is the most commonly used address attribute data.We research on these two kinds of data,achieving the modeling of digital geological and the visualization of wellbores' attribute information.We also implemented two construction methods of two kinds of 3D wellbore model furthermore,we carry out the analysis and compare them based on the trajectory of the linear structure.We research on gamma drilling logging data adopting the method of imaging information to visualize the data,providing the realization method of the imaging logging data,including color calibration,color mapping,image display and image processing.In this paper we combine the imaging information of well logging data and three-dimensional wellbore model,showing the wellbore attributes information and roaming in the wall of the wellbore,in order to realize the digital tube wells.Finally,we designed and implemented a 3D visualization prototype system with the devolvement software Open Inventor and Qt.The 3D visualization prototype system can realize the display of well logging information in 3D well,and lay a good foundation for the further application of the drilling technology.