Integrating Digital and Traditional Field Techniques Using Virtual Reality Geological Studio (VRGS)

摘要

The need for integrated quantitative outcrop data collection has been driven by the requirement to improve the geological models and geostatistical data needed for reservoir characterisation in order to improve recovery. This outcrop data collection in a three dimensional framework has also led to the development of virtual outcrop analogue datasets to be used in both field and lab based training. LiDAR (Light Detection And Range) has been used in many related fields (e.g. engineering, surveying, atmospheric physics) for several years now. The LiDAR system is used to scan the outcrop and survey a very high resolution Digital Terrain Model (DTM) of the surface at a resolution high enough to resolve individual bedding planes. From this DTM quantitative measurements may be made. LIDAR, however, is not a replacement for traditional fieldwork, but is an important addition to the field geologists toolkit to allow improved and rapid high accuracy three dimensional data collection. It is therefore critical to use LIDAR data in an integrated field data collection approach comprising both new and traditional data collection techniques. Virtual Reality Geological Studio (VRGS) is a geoscience specific software application developed within the Basin Studies group at Manchester. The development was driven by the lack of software tools specific for the geologists needs when handling a variety of digital outcrop data, allowing the necessary level of data integration required. VRGS currently allows: Interpretation of surfaces and boundaries via polyline interpretation, measurement and analysis of structural data from the point cloud, Integration of field observations, structural Modelling and restoration, attribute analysis, auto-tracking and visualization in both 2D and 3D-stereo environments.