Interactive Image Analysis Of Borehole Televiewer Data

This chapter describes an interactive graphics system designed for borehole<br>televiewer (BHTV) image analysis. The software provides one of the fust comprehensive<br>tools for borehole image data analysis available to exploration and research scientists on a<br>low cost and easy-to-use personal computer, the Apple Macintosh II.<br>The program, called BHTVImage, provides an integrated environment for analyzing<br>borehole shape and features. Images of BHTV data are displayed in false color on a<br>graphics screen and are manipulated with a mouse pointing device. A variety of two and<br>three-dimensional displays of borehole radius and acoustic reflectivity are used to display<br>the data. Tens of meters of borehole wall can be rapidly viewed by scrolling through the<br>data within a graphics window. Interactive measuring tools are provided to quickly<br>measure and record wellbore features. The values of the scales, units, and grid intervals<br>can be modified interactively during program execution. Gross scale features can be easily<br>extracted from the images through interactive thresholding to produce a scaled comparison<br>with complementary log data such as resistivity or sonic recordings. Alternatively, fulI<br>resolution images can be analyzed to investigate the fme details of fractures or crossbedding<br>intersecting the well.