Abstract
A well data management system is developed on a personal computer to maintain well data for the analysis of sedimentary basin which is the basis of resource assessment. Microsoft (MS) Excel, a spread sheet software, is used for well data input and management, and PC-ARC/INFO, a geographic information system (GIS), is used for graphical presentation. Well information, such as well location and vertical subsurface data is filed on the shrewd sheet, whereas two dimensional geographic data such as topography are maintained in PC-ARC. With the help of some in-house software, the data in MS-Excel are converted to a format acceptable for PC-ARC/INFO. The locational information and descriptive information are combined on PC-INFO, and PC-ARCPLOT (a part of PC-ARC/INFO) can produce the graphical output of well data both on maps and cross-sections. Furthermore, isodepth map and stratigraphic section indespensable for analysis of sedimentary basin can be edited on graphical outout by PC-ARCEDIT (a part of PC-ARC/INFO) .