| Abstract |
The Geothermal Data Management System (GEOSYS) has been developed to allow storage, retrieval, and analysis of the large volume of data associated with a geothermal reservoir, including well drilling data, well log data, production (chemical and flow) data, and geographical data. The system allows the user to display overlays of well locations, faults, and surface features on maps or topographic images. Subsurface cross sections can be displayed by selecting any two points on the map. Cross sections show subsurface topography together with the projections of wells along the cross section. The structure of each individual well can also be displayed in detail. Downhole well logs can be selected, displayed, and expanded to arbitrary scale. Time histories of production data can be displayed for the field and for each well. Geothermometer temperatures can be calculated from a variety of chemical concentration measurements. Enthalpy can be calculated from pressure and flow measurements. Data from the Cerro Prieto, Oguni and Sumikawa geothermal fields have been used for development and testing of the system. This type of system has been made possible by recent advances in hardware and software technology and the dramatic reduction in cost of high speed workstations and disk storage. GEOSYS was developed using the X Window System and the OSF/ Motif widget set. The X Window System was designed specifically to precede hardware independence for interactive systems based on bit-mapped graphics with a Graphical User Interface (GUI). Systems developed using X run on most modern workstations, and can run across a network with the application being resident on only one computer, but accessible to all others. |