Abstract: Based on the mathematical theory of analytical geometry of three dimensions and computer graphics, the paper does some im-portant research on the integration plot forwell track and stratigraph-ic section and borehole log.Aset of application program compiled by VB6.0 language has been successfully applied to realize the integra-tion plot and bring outthe three-dimensional contact relation between well track and formation visually. Meanwhile, the plot has endued the well track with 3D geologic information and logging information.Through the interpretation for substantive practical material, it
proves that the program is useful and 3D visualization plot powerful.
The conclusion of the study offers researcher some effectual help to carry out geologic parameter interpretation and geosteering of wire-line logging or logging while drilling for horizontal well and high an-gle deviated hole.

Key words: logging curve, borehole trace, stratigraphic sec-tion, three-dimensional visualization